Journal of the Taiwan Institute of Chemical Engineers最新文献

筛选
英文 中文
Unveiling the potential of Bacillus cereus for the biodegradation of antibiotic metronidazole in aqueous solutions 揭示蜡样芽孢杆菌在水溶液中生物降解抗生素甲硝唑的潜力
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-16 DOI: 10.1016/j.jtice.2025.106192
Mai Lien Tran , Yu-Chieh Hsieh , John Chi-Wei Lan , Ruey-Shin Juang
{"title":"Unveiling the potential of Bacillus cereus for the biodegradation of antibiotic metronidazole in aqueous solutions","authors":"Mai Lien Tran ,&nbsp;Yu-Chieh Hsieh ,&nbsp;John Chi-Wei Lan ,&nbsp;Ruey-Shin Juang","doi":"10.1016/j.jtice.2025.106192","DOIUrl":"10.1016/j.jtice.2025.106192","url":null,"abstract":"<div><h3>Background</h3><div><strong>:</strong>Wastewaters discharged from pastures, hospitals, and some factories often contain trace amounts of various antibiotics. If these antibiotics are not properly treated, they will cause bacterial resistance and have a new impact on human health.</div></div><div><h3>Methods</h3><div><strong>:</strong>In this study, bacteria were first adopted for solid-state antibiotic culture tests, while contaminating bacteria identified to be <em>Bacillus cereus</em> (<em>B. cereus</em>) were selected and cultured. After culture in liquid medium, different concentrations of metronidazole (MNZ) were added for further degradation tests.</div></div><div><h3>Significant Findings</h3><div><strong>:</strong>The results revealed that MNZ could be degraded although MNZ has an inhibitory effect on <em>B. cereus</em> growth. The Haldane model was used to analyze cell growth kinetics. The maximum specific growth rate μ<sub>max</sub>, affinity constant <em>K</em><sub>S</sub>, and inhibition constant <em>K</em><sub>I</sub> were calculated to be 0.0158 h<sup>-1</sup>, 29.7 mg/L, and 267.0 mg/L, respectively. The GC–MS analysis showed that only acetic acid was detected during the biodegradation of MNZ, suggesting possible MNZ degradation pathways.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106192"},"PeriodicalIF":5.5,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improvement of powder properties of boscalid monohydrate by a quasi-emulsion solvent diffusion-based crystallization route 准乳状溶剂扩散晶化方法改善双碱一水粉体性能
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-15 DOI: 10.1016/j.jtice.2025.106181
Zeren Shang , Weiguo Hu , Jingkang Wang , Junbo Gong
{"title":"Improvement of powder properties of boscalid monohydrate by a quasi-emulsion solvent diffusion-based crystallization route","authors":"Zeren Shang ,&nbsp;Weiguo Hu ,&nbsp;Jingkang Wang ,&nbsp;Junbo Gong","doi":"10.1016/j.jtice.2025.106181","DOIUrl":"10.1016/j.jtice.2025.106181","url":null,"abstract":"<div><h3>Background</h3><div>The smooth production of pesticide formulation of boscalid monohydrate is restricted by its poor flowability. Here, this work develops a QESD-based crystallization route for preparing spherical agglomerate of boscalid monohydrate.</div></div><div><h3>Methods</h3><div>The solubility of boscalid (form II) in ethyl acetate was measured and correlated to provide reference for designing subsequent crystallization experiments. Besides, modeling work was implemented to predict the morphologies of the two solid forms of boscalid and explain the formation mechanisms. By investigating types of emulsifiers, emulsifier concentration, boscalid concentration and stirring rate, the crystallization route for producing spherical agglomerate of boscalid monohydrate was designed and optimized. Online monitoring and <sup>1</sup>H NMR experiments were used to study the fabrication mechanism of boscalid monohydrate spherical agglomerate.</div></div><div><h3>Significant Findings</h3><div>Firstly, boscalid has suitable solubility in ethyl acetate, which indicates that ethyl acetate is suitable as a good solvent in the crystallization process of boscalid. Secondly, the modeling results show that the solvent-crystal interactions composed of hydrogen bonding interaction and van der Waals interaction are affected by the roughness of the crystal face and the exposed functional groups on the crystal face. And the different solvent-crystal interactions on the four crystal faces of boscalid monohydrate make solvent molecules have different suppression influences on the growth rate of each crystal face in the ethyl acetate-water system. Thirdly, boscalid monohydrate spherical agglomerate with uniform particle size and good flowability was successfully fabricated out. Fourthly, online monitoring and <sup>1</sup>H NMR results confirm that the hydrogen bonding interaction between boscalid and HPMC enables the stability of emulsion droplets where boscalid monohydrate agglomerates into spherical particle. Finally, the scalability and sustainability prospects of the crystallization route have been explored.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106181"},"PeriodicalIF":5.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sintering of Cu nanoparticles for optimized particle size and enhanced interconnect performance 烧结铜纳米颗粒优化粒径和增强互连性能
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-15 DOI: 10.1016/j.jtice.2025.106185
Ping-Hsuan Chen , Hung Wang , Kelvin Li , Chang-Meng Wang , Cheng-Yi Liu , Albert T. Wu
{"title":"Sintering of Cu nanoparticles for optimized particle size and enhanced interconnect performance","authors":"Ping-Hsuan Chen ,&nbsp;Hung Wang ,&nbsp;Kelvin Li ,&nbsp;Chang-Meng Wang ,&nbsp;Cheng-Yi Liu ,&nbsp;Albert T. Wu","doi":"10.1016/j.jtice.2025.106185","DOIUrl":"10.1016/j.jtice.2025.106185","url":null,"abstract":"<div><h3>Background</h3><div>The performance and reliability of wide-bandgap devices depend on achieving effective Cu-Cu bonding, which requires control over critical processing conditions. Copper nanoparticles (Cu NPs) with controlled sizes are introduced to improve Cu-Cu bonding in electronic packaging.</div></div><div><h3>Methods</h3><div>A green chemical method was used to reduce CuO and synthesize Cu nanoparticles (Cu NPs), which were then applied to achieve Cu-to-Cu bonding. The bonding process was conducted at low temperature without pressure, utilizing polyethylene glycol (PEG) as both solvent and reducing agent. The mechanical and electrical properties of the Cu NPs paste joint were measured by shear testing and four-point probe measurement.</div></div><div><h3>Significant findings</h3><div>This study explores the nucleation and growth mechanisms of copper nanoparticles (Cu NPs) and their role in optimizing bonding conditions through control of surface oxidation. The effect of pH on synthesis parameters is emphasized, demonstrating its significant influence on particle size, distribution, and sintering properties. A model is proposed to elucidate the competition between surface energy and reduction energy within the Cu<sub>2</sub>O layer, providing insights into optimal sintering conditions. These advancements in Cu NP synthesis and sintering technology result in improved mechanical properties, including increased shear strength, reduced void ratios, and higher density in bonded structures.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106185"},"PeriodicalIF":5.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Longwave nonlinear stability of two liquid layers coating both sides of a thick wall with slip in presence of gravity 重力作用下厚壁两侧液体层的长波非线性稳定性
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-13 DOI: 10.1016/j.jtice.2025.106162
L.A. Dávalos-Orozco, J.L. Villalobos-Piñera
{"title":"Longwave nonlinear stability of two liquid layers coating both sides of a thick wall with slip in presence of gravity","authors":"L.A. Dávalos-Orozco,&nbsp;J.L. Villalobos-Piñera","doi":"10.1016/j.jtice.2025.106162","DOIUrl":"10.1016/j.jtice.2025.106162","url":null,"abstract":"<div><h3>Background:</h3><div>The process of dip coating has been investigated for many years and it consists of pulling out a solid slab from a liquid pool. Then two liquid layers will remain coating the slab. When it is rotated into a horizontal position the liquid-wall-liquid system is subjected to a perpendicular temperature gradient and gravity.</div></div><div><h3>Methods:</h3><div>Two thermally coupled nonlinear evolution equations for the free surfaces deformations are derived using the small wavenumber approximation including thermocapillary effects, gravity and slip at the wall.</div></div><div><h3>Significant Findings:</h3><div>The linear growth rate and maximum growth rate of instability were investigated. Due to the coupling of the two liquid layers the instability can be stationary or oscillatory. It is shown that slip at the wall-liquid interfaces may destabilize the flow, but under important circumstances, slip may stabilize in two different ways. First, slip may stabilize decreasing the growth rate with the increase of the perturbation wavenumber above a critical one. Second, from the point of view of the maximum growth rate, slip may stabilize in a certain range of the Marangoni number. These two cases are shown with samples of nonlinear free surfaces profiles. Nonlinear sinuous or varicose mode is also investigated.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106162"},"PeriodicalIF":5.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flow and mixing characteristics in a droplet on a vibrating plate 振动板上液滴的流动和混合特性
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-12 DOI: 10.1016/j.jtice.2025.106183
Yuki Morita, Ippo Ota, Yoshiyuki Komoda, Naoto Ohmura
{"title":"Flow and mixing characteristics in a droplet on a vibrating plate","authors":"Yuki Morita,&nbsp;Ippo Ota,&nbsp;Yoshiyuki Komoda,&nbsp;Naoto Ohmura","doi":"10.1016/j.jtice.2025.106183","DOIUrl":"10.1016/j.jtice.2025.106183","url":null,"abstract":"<div><h3>Background</h3><div>This study aims to develop a droplet-based microreactor that achieves active mixing through low-frequency vertical vibrations, offering an alternative to channel-based microreactors that suffer from clogging and complex design.</div></div><div><h3>Method</h3><div>The effects of vibration parameters on internal flow and mixing performance were investigated using particle image velocimetry (PIV), decolorization experiments, and computational fluid dynamics (CFD) based on the Moving Particle Semi-implicit (MPS) method.</div></div><div><h3>Significant findings</h3><div>Two stable circulating flows were observed in most cases of experiments, while additional or unstable flow patterns appeared stochastically. Mixing efficiency improved with larger amplitudes and lower frequencies due to enhanced flow instability. Decolorization experiments indicated distinct internal and near-surface flow behavior. CFD results showed random flow in the <em>x</em>–<em>y</em> plane and stable circulation in the <em>x</em>–<em>z</em> plane, with vorticity duration increasing at higher frequencies. These findings demonstrate the potential of vibration-induced droplet mixing for applications in organic synthesis, biochemical reactions, and solid–liquid microprocesses.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106183"},"PeriodicalIF":5.5,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Robust pidf-pid cascade control scheme for delay-dominant stable and integrating chemical processes 时滞优势稳定综合化学过程的鲁棒pid -pid串级控制方法
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-12 DOI: 10.1016/j.jtice.2025.106165
Prabir Singha , Rammurti Meena , Sudipta Chakraborty , G. Lloyds Raja
{"title":"Robust pidf-pid cascade control scheme for delay-dominant stable and integrating chemical processes","authors":"Prabir Singha ,&nbsp;Rammurti Meena ,&nbsp;Sudipta Chakraborty ,&nbsp;G. Lloyds Raja","doi":"10.1016/j.jtice.2025.106165","DOIUrl":"10.1016/j.jtice.2025.106165","url":null,"abstract":"<div><div>Background: Chemical processes like bioreactors, liquid storage tanks, CSTRs, and distillation columns exhibit non-self-regulating behavior, generating boundless output over a fixed input, making it challenging to control when associated with dominant time delay. Hence, a modified cascade control method (CCM) is suggested which is unified for both stable and integrating processes with delay. <em>Methods:</em> The lead controller is proportional–integral–derivative-filter (PIDF) type, whereas the secondary controller is a PID. Both these controllers, operating in a Smith predictor-based framework, are designed using phase margin and maximum sensitivity specifications for the same user-defined target loop. The inner and outer loop Smith predictors compensate for the delays in their respective loops, while the number of controllers in the modified CCM remains the same as that of a conventional CCM. <em>Significant Findings:</em> Simulation studies on benchmark models of chemical processes demonstrate that the present design provides improved regulatory and servo actions. Particularly, it is capable of enduring up to 70% variation in process delay and 60% variation in process gain while maintaining closed-loop robust stability. Practical feasibility of this design is vindicated using a two tank level control experimental loop.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106165"},"PeriodicalIF":5.5,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly efficient magnetic iron oxides-polyaniline nanocomposite for electrochemical removal of lead and cadmium ions from contaminated water 高效磁性氧化铁-聚苯胺纳米复合材料电化学去除污染水中铅和镉离子
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-11 DOI: 10.1016/j.jtice.2025.106187
Rehab Abd-Elrahman , Hany M. Abd El-Lateef , Nagwa Abo El‐Maali , A.M. Abdel-Mawgoud , Mahmoud Elrouby
{"title":"Highly efficient magnetic iron oxides-polyaniline nanocomposite for electrochemical removal of lead and cadmium ions from contaminated water","authors":"Rehab Abd-Elrahman ,&nbsp;Hany M. Abd El-Lateef ,&nbsp;Nagwa Abo El‐Maali ,&nbsp;A.M. Abdel-Mawgoud ,&nbsp;Mahmoud Elrouby","doi":"10.1016/j.jtice.2025.106187","DOIUrl":"10.1016/j.jtice.2025.106187","url":null,"abstract":"<div><h3>Background</h3><div>This study presents the first successful cyclic voltammetry-assisted one-step electrochemical synthesis of polyaniline-iron oxide nanocomposites. The composite films were developed by reducing an iron-triethanolamine complex in an alkaline solution containing aniline monomers, enabling the uniform integration of iron oxide nanoparticles into a conductive polyaniline matrix.</div></div><div><h3>Methods</h3><div>The nanocomposites were synthesized through electrodeposition, and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). Thermal stability was evaluated using thermogravimetric (TGA) and differential thermal analysis (DTA).</div></div><div><h3>Significant Findings</h3><div>The synthesized nanocomposites exhibited excellent capabilities for adsorption or uptake lead and cadmium ions lead and cadmium ions from water, following a chemisorption mechanism as suggested by kinetic and isotherm modeling. The materials demonstrated high reusability with negligible loss in adsorption efficiency over three consecutive adsorption-desorption cycles, and good repeatability with consistent adsorption capacities across multiple batches. Maximum adsorption capacities reached 96.99 mg/g for cadmium and 335.57 mg/g for lead, surpassing many reported materials. This work highlights a scalable electrochemical approach for fabricating high-performance nanocomposite adsorbents for water purification.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106187"},"PeriodicalIF":5.5,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Conversion of polypropylene into valued-added gasoline range hydrocarbons by catalytic pyrolysis at atmospheric pressure: different composite catalysts of HZSM-5, HY and MCM-41 常压催化热解聚丙烯制汽油增值烃类:HZSM-5、HY和MCM-41不同复合催化剂
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-10 DOI: 10.1016/j.jtice.2025.106184
Samira Rahimi , Ali Shahdadi , Reza Alizadeh , Mohammad Rostamizadeh
{"title":"Conversion of polypropylene into valued-added gasoline range hydrocarbons by catalytic pyrolysis at atmospheric pressure: different composite catalysts of HZSM-5, HY and MCM-41","authors":"Samira Rahimi ,&nbsp;Ali Shahdadi ,&nbsp;Reza Alizadeh ,&nbsp;Mohammad Rostamizadeh","doi":"10.1016/j.jtice.2025.106184","DOIUrl":"10.1016/j.jtice.2025.106184","url":null,"abstract":"<div><h3>Background</h3><div>The synergic effect of textural and acidity properties of zeolite composite catalysts needs to be investigated, to improve catalyst design for plastic pyrolysis. The proximity of the acid sites of the catalysts can increase accessibility and reduce the diffusion limitation of macromolecules, improving the performance of zeolite catalysts.</div></div><div><h3>Methods</h3><div>In this study, polypropylene (PP) pyrolysis was studied over different zeolites (ZSM-5, HY, and MCM-41) and their diverse composites in a dual-bed fixed bed reactor at atmospheric pressure. The parent catalysts were synthesized by hydrothermal method and two techniques (granular mixing and powder mixing) were applied to prepare the composite catalysts. The structure and acidity of the catalysts were characterized by FE-SEM, XRD, BET-BJH, NH<sub>3</sub>-TPD, FT-IR, and TGA techniques.</div></div><div><h3>Significant Findings</h3><div>The catalysts included a uniform morphology, high crystallinity, high surface area (&gt;360 m<sup>2</sup>g<sup>−1</sup>), and mesopore structure. The MCM-41/HY composite catalyst had superior catalytic performance in both forms of granular mixing and powder mixing. The highest amount of gasoline hydrocarbons (76.6 %) was achieved by the powder mixing, including olefin (28.3 %), paraffin (1.7 %), isoparaffin (8 %), aromatic (5.6 %), and cyclo compounds (32.4 %). The developed catalyst showed high stability, reusability, and low coke tendency. Furthermore, high activity was achieved in the pyrolysis of real PP waste plastic. The composite catalysts offer improved shape selectivity and porosity, reducing the diffusion limitation of macromolecules and leading to high activity in multi-step/cascade reactions. The results confirmed the high potential of the zeolite composite catalysts in catalytic pyrolysis of PP.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106184"},"PeriodicalIF":5.5,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inverse CFD method for thermal analysis of 3D turbulent natural convection in fin-enhanced cavities for HVAC applications 暖通空调翅片增强腔内三维湍流自然对流热分析的逆CFD方法
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-09 DOI: 10.1016/j.jtice.2025.106167
Han-Taw Chen , Yu-Jun Zheng , Hai-Chi Chang , Wei-Mon Yan , Seyed Mohammad Vahidhosseini , Saman Rashidi
{"title":"Inverse CFD method for thermal analysis of 3D turbulent natural convection in fin-enhanced cavities for HVAC applications","authors":"Han-Taw Chen ,&nbsp;Yu-Jun Zheng ,&nbsp;Hai-Chi Chang ,&nbsp;Wei-Mon Yan ,&nbsp;Seyed Mohammad Vahidhosseini ,&nbsp;Saman Rashidi","doi":"10.1016/j.jtice.2025.106167","DOIUrl":"10.1016/j.jtice.2025.106167","url":null,"abstract":"<div><h3>Background</h3><div>Closed cavities with a heated bottom surface are commonly used in electronic cooling and HVAC industries, where effective thermal management is essential. This study aims to investigate 3D turbulent free convective thermal transport within such a chamber equipped with various fins.</div></div><div><h3>Methods</h3><div>An inverse CFD technique, coupled with extensive experimental temperature measurements, was employed. Various turbulence models, combined with RMSE, were used to forecast the fluid dynamics model and the unidentified thermal transport rate of the heater.</div></div><div><h3>Significant Findings</h3><div>The results identified the RNG k-ε model and the zero-equation model as appropriate flow models. Nusselt numbers, air temperature contours, and flow patterns compared well with existing correlations and experimental data. As the number of fins and cavity height increased, the configuration of cells and vortices could blend and restructure, affecting the formation of Rayleigh-Bénard convection cells. Increasing the number of fins also accelerated the flow speed in the cavity. The study confirmed that the fin material and heater temperature have minimal impact on air velocity patterns and temperature contours. This investigation is novel in applying the inverse CFD technique to this problem, providing new insights into the behavior of turbulent natural convection in finned cavities. The appropriate flow models are the RNG k-ε model with <em>N<sub>f</sub></em>=3 and the zero-equation method with <em>N<sub>f</sub></em>=0 and 7, respectively. In addition, <em>N<sub>f</sub></em>=3 provides the maximum convective heat transfer coefficient.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106167"},"PeriodicalIF":5.5,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implementation of multi-layer perceptron to gravitational convection of a nano-suspension subject to exothermic reaction: Second law analysis 受放热反应影响的纳米悬浮液重力对流多层感知器的实现:第二定律分析
IF 5.5 3区 工程技术
Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-07 DOI: 10.1016/j.jtice.2025.106175
Ahmed M. Galal , Amjad Ali Pasha , M.K. Nayak , Mohammed K. Al Mesfer , Mohd Danish , Sana Qaiyum
{"title":"Implementation of multi-layer perceptron to gravitational convection of a nano-suspension subject to exothermic reaction: Second law analysis","authors":"Ahmed M. Galal ,&nbsp;Amjad Ali Pasha ,&nbsp;M.K. Nayak ,&nbsp;Mohammed K. Al Mesfer ,&nbsp;Mohd Danish ,&nbsp;Sana Qaiyum","doi":"10.1016/j.jtice.2025.106175","DOIUrl":"10.1016/j.jtice.2025.106175","url":null,"abstract":"<div><h3>Background</h3><div>Interestingly effective cooling is needed in the cavities of complex type geometries like adverse trapezium-shaped chamber in microelectronics, energy storage, heat exchangers, solar collectors, and chemical processing etc. for modern industries. Further, gravitational convection provides low-grade heat transfer applications and titanium dioxide is an effective nanoparticle because of its low cost, high stability and greater thermal conductivity. That is why the present study covers the natural convection of TiO<sub>2</sub>-water nanofluid along with second law analysis within an adverse trapezium-shaped chamber subject to exothermic reaction via Arrhenius kinetics and periodic magnetic field.</div></div><div><h3>Methods</h3><div>The numerical solution of the present problem is obtained by implementing Finite element method (FEM). Multi-layer Perceptron (MLP) as a kind of artificial neural network (ANN) is utilized to anticipate the amounts of maximum temperature and mean Nusselt number.</div></div><div><h3>Significant Findings</h3><div>The major new significant findings of the present study include that the streamlines, isotherms, velocities peter out due to the increment of the strength of the magnetic field. In other words, higher strength of magnetic field accounts for the controlling factor of the nanofluid motion and heat transfer within the adverse trapezium-shaped chamber. However, streamlines and isothermal lines upgrade with rise in Frank-Kamenetskii number and Rayleigh number, ratio of the cooler’s position to the length of the inclined side of the chamber. Total entropy generation upsurges due to rise in Hartmann number and Frank-Kamenetskii number. Average heat transfer rate shows significant enhancement of 148.35% for rise of Rayleigh number from 10<sup>5</sup> to 10<sup>6</sup>. In addition, the applied learning algorithm has great potential to predict the values of mean Nusselt and maximum temperature.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106175"},"PeriodicalIF":5.5,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信