International Journal of Heat and Mass Transfer最新文献_第8页

Empirical modeling and hybrid machine learning framework for nucleate pool boiling on microchannel structured surfaces 微通道结构表面核池沸腾的经验建模和混合机器学习框架

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-16 DOI: 10.1016/j.ijheatmasstransfer.2025.127163

Vijay Kuberan, Sateesh Gedupudi

{"title":"Empirical modeling and hybrid machine learning framework for nucleate pool boiling on microchannel structured surfaces","authors":"Vijay Kuberan, Sateesh Gedupudi","doi":"10.1016/j.ijheatmasstransfer.2025.127163","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127163","url":null,"abstract":"<div><div>Micro-structured surfaces influence nucleation characteristics, capillary liquid wicking, and bubble dynamics besides increasing the heat transfer surface area, thus enabling efficient nucleate boiling heat transfer. Modeling the pool boiling heat transfer characteristics of these surfaces under varied conditions is essential in diverse applications. A new empirical correlation for nucleate boiling on microchannel structured surfaces for heat flux input condition has been proposed with the data collected from various experimental studies in the literature, as the accuracy and applicability of the existing correlations are limited. This study further examines various Machine Learning (ML) algorithms and Deep Neural Networks (DNN) for predicting the nucleate pool boiling Heat Transfer Coefficient (HTC) on the microchannel structured surfaces for heat flux and wall superheat input conditions. With an aim to integrate both the ML and domain knowledge, the study proposes a Physics-Informed Machine Learning-Aided Framework (PIMLAF), which employs an empirical correlation as the prior physics-based model and a DNN to model the residuals of the prior model. This hybrid framework achieved the best performance in comparison to the other ML models and DNNs for wall superheat as an input. This framework is able to generalize well for different datasets because the empirical correlation provides the baseline knowledge of the boiling behavior. The verification of the models involves two tests — one against the blind data from the ML pool and the other against the blind data from other than the ML pool. Also, SHAP interpretation analysis identifies the critical parameters impacting the model predictions and their effect on HTC. This analysis further makes the modeling more robust and reliable.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127163"},"PeriodicalIF":5.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Evolution of thermal conductivity for sand-clay composite under one-dimensional compression 一维压缩条件下砂-粘土复合材料导热系数的演化

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-16 DOI: 10.1016/j.ijheatmasstransfer.2025.127243

Yu-Ling Yang , Tao Zhang , Yang Chen , Chong Ma , Guo-Jun Cai , Cai-Jin Wang

{"title":"Evolution of thermal conductivity for sand-clay composite under one-dimensional compression","authors":"Yu-Ling Yang , Tao Zhang , Yang Chen , Chong Ma , Guo-Jun Cai , Cai-Jin Wang","doi":"10.1016/j.ijheatmasstransfer.2025.127243","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127243","url":null,"abstract":"<div><div>Thermal conductivity of porous materials is critical in the design and operation of various thermo-active structures. This study utilized the thermal probe needle to investigate the variation of thermal conductivity for sand-clay composite under one-dimensional compression conditions. The composites were prepared with varied clay contents at two extreme states (i.e., dry and water saturated states). Dry density was also calculated to assess the compactness of tested composites. The combined impacts of clay content, stress level, and pore water on thermal conduction and compaction of the composite were investigated. The test results revealed that thermal conductivity presented a ‘increasing first and then decreasing’ trend with clay content, wherein the maximum values took place at <em>f</em> = 40 %. The improvement of heat transfer pathways was responsible for the seven times higher thermal conductivity in saturated composites. Effective stress had a positive impact on thermal conductivity as consequence of structure compaction, increasing contact area and coordinate number, diminishing contact thermal resistance. Water saturation had the most pronounced influence on thermal conductivity as compared to clay content and stress level, but imposed a negligible effect on dry density. The transitional clay contents (i.e., 30 % to 40 % in this study) in dry density implied that the microstructure of composite turned from ‘coarse-dominant’ mode to ‘fines-dominant’ mode. The polyline function was used to account for the influences of fine content and water saturation in the developed model, which closely aligned with experimental data trends. Further investigations are warranted to examine the roles of particle compression deformation and crushing, particle morphology, and temperature in the thermal conduction mechanism of such binary porous media.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127243"},"PeriodicalIF":5.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

CFD-driven investigation on improving heat recovery in centrifugal wet scrubbers 提高离心湿式洗涤塔热回收率的cfd驱动研究

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-16 DOI: 10.1016/j.ijheatmasstransfer.2025.127251

Wanja Thelin, Leteng Lin

{"title":"CFD-driven investigation on improving heat recovery in centrifugal wet scrubbers","authors":"Wanja Thelin, Leteng Lin","doi":"10.1016/j.ijheatmasstransfer.2025.127251","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127251","url":null,"abstract":"<div><div>Mitigating global warming requires a rapid transition to carbon-neutral energy sources, with biomass-based heat production being a significant contributor. Wet scrubbers equipped with heat recovery enhance fuel efficiency by utilizing waste heat while removing particulate matter from flue gas. In this study, a Computational Fluid Dynamics (CFD) model was developed to investigate heat recovery and flow dynamics in a centrifugal wet scrubber installed at a 3MW<sub>th</sub> biomass-fired district heating facility, achieving an annual heat recovery of approximately 2 GWh. The model was validated against process data, showing a prediction error of 3.4 %, which is lower than other simulation models for similar purposes. This model, complemented by an Analysis of Variance (ANOVA), was used to explore different optimization strategies, including enlarging the contact zone opening, pre-scrubber moisture addition to the flue gas, and new compact geometries. Three scrubber designs were examined in-depth, focusing on gas flow, as well as heat and mass transfer. Increasing the contact zone opening from 100 to 150 mm yielded a 2 % boost in heat recovery. Coupling this design improvement with moisture addition can potentially elevate heat recovery by approximately 9 % over the conventional design. The new compact scrubber design can potentially increase heat recovery by 2.7 %, and further up to 9 % when combined with the moisture addition strategy. Notably, this compact geometry showed superior radial velocity and heat recovery, offering significant potential for material and space savings. This study provides valuable insights into the optimization of centrifugal wet scrubbers for improved heat recovery efficiency.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127251"},"PeriodicalIF":5.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Assessment of hybrid Macroscopic/State-to-State model for numerical simulation of Ice Giant orbit insertion 冰巨轨道插入数值模拟的宏观/状态-状态混合模型评估

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-16 DOI: 10.1016/j.ijheatmasstransfer.2025.127188

Davide Ninni , Francesco Bonelli , Gianpiero Colonna , Annarita Laricchiuta , Giuseppe Pascazio

{"title":"Assessment of hybrid Macroscopic/State-to-State model for numerical simulation of Ice Giant orbit insertion","authors":"Davide Ninni , Francesco Bonelli , Gianpiero Colonna , Annarita Laricchiuta , Giuseppe Pascazio","doi":"10.1016/j.ijheatmasstransfer.2025.127188","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127188","url":null,"abstract":"<div><div>In the current emerging of New Space Economy, space exploration is becoming a priority for the scientific community, for Space Agencies, and for industries. In this field, while gas giants (Jupiter and Saturn) have been explored thanks to NASA space missions, the study of ice giants (Uranus and Neptune) remains an open issue. ESA and NASA are carrying out extensive researches to devise affordable strategies in order to reach these planets in a reasonable time. Specifically, a critical issue in planet exploration is the atmospheric entry phase, due to the extremely challenging flight conditions experienced by the space vehicle. This paper illustrates a numerical investigation of entry and aerocapture maneuvers for ice giant orbit insertion. A comparison between the full State-to-State kinetic model and the proposed hybrid macroscopic model, coherently derived from state-specific dynamical data, is presented in detail. Two different flow regimes are analyzed: a low enthalpy flow, characterized by molecular dissociation, and a high enthalpy flow, where ionization and radiation become relevant.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127188"},"PeriodicalIF":5.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Multi-objective optimization of spiral channel liquid cooling plate aimed at temperature uniformity and resistance reduction for thermal management of energy storage system 针对储能系统热管理中温度均匀性和降低阻力的螺旋通道液冷板多目标优化

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-15 DOI: 10.1016/j.ijheatmasstransfer.2025.127234

Haolin Gan, Jian’an Tian, Xinyi Wang, Changhui Liu, Jiateng Zhao

{"title":"Multi-objective optimization of spiral channel liquid cooling plate aimed at temperature uniformity and resistance reduction for thermal management of energy storage system","authors":"Haolin Gan, Jian’an Tian, Xinyi Wang, Changhui Liu, Jiateng Zhao","doi":"10.1016/j.ijheatmasstransfer.2025.127234","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127234","url":null,"abstract":"<div><div>Spiral channel liquid cooling plates (LCPs) exhibit good heat transfer performance and high temperature uniformity; however, this design suffers from significant flow resistance, making them unsuitable for application in battery energy storage systems (BESS). To address this issue, this paper proposes a method for optimizing the corner structure. The corner structure of the LCP is defined using the ellipse axial ratio, corner width, and straight section ratio as variables for the surrogate model. The Nusselt number (Nu), resistance characteristic coefficient (ξ), heat transfer surface temperature standard deviation (T<sub>σ</sub>), and performance evaluation coefficient (PEC) are chosen as dependent variables to construct a prediction model based on the backpropagation neural network (BPNN). Subsequently, the LCP is optimized using the multi-objective particle swarm optimization (MOPSO) algorithm. The multi-objective optimization results show that, compared to the initial design, the optimized LCP leads to an 8.66 % reduction in Nu. However, the T<sub>σ</sub> decreased by 2.62 %, and the ξ was reduced by 19.94 %. Under the battery charge-discharge conditions, the optimized LCP exhibits similar thermal management performance to the initial design, while the system pressure drop is reduced by 17.4 %. This optimization structure effectively addresses the temperature uniformity requirements of the BESS and enhances the system’s economic efficiency by reducing energy consumption.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127234"},"PeriodicalIF":5.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

A data-driven model reduction of cyclic adsorption in coated tubes

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-14 DOI: 10.1016/j.ijheatmasstransfer.2025.127189

Behzad Baghapour

{"title":"A data-driven model reduction of cyclic adsorption in coated tubes","authors":"Behzad Baghapour","doi":"10.1016/j.ijheatmasstransfer.2025.127189","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127189","url":null,"abstract":"<div><div>In this study, cyclic adsorption inside coated tubes was investigated using computational fluid dynamics (CFD) and reduced-order modeling (ROM). An axisymmetric 2D CFD model was developed to simulate the problem. In this model, the coated layer was treated as a wall boundary condition, assuming a negligible radial variation in the layer. The coated layer and the air field were coupled through the transmission of heat and mass diffusion fluxes at the interface. The collected CFD data were used to develop ROMs. Dynamic mode decomposition (DMD) and proper orthogonal decomposition with long short-term memory networks (POD-LSTM) were introduced as spatiotemporal ROMs. The outlet condition of the tube was also reconstructed using discrete Fourier transform (DFT) as a temporal ROM. The proposed ROMs demonstrated their advantages as fast, accurate, and stable surrogate models for predicting cyclic adsorption under laminar conditions at Reynolds numbers between 30 and 600. Using 720 time samples, DMD with 30 modes, DFT with 20 modes, and POD-LSTM with 10 modes showed suitable performance in terms of the reconstruction accuracy and computational cost.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127189"},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Design and heat transfer performance enhancement of a novel corrugated plate phase change heat accumulator

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-14 DOI: 10.1016/j.ijheatmasstransfer.2025.127242

Ziman Wang , Jiayi Zhong , Xinjiao Cui , Xinyu Wang

{"title":"Design and heat transfer performance enhancement of a novel corrugated plate phase change heat accumulator","authors":"Ziman Wang , Jiayi Zhong , Xinjiao Cui , Xinyu Wang","doi":"10.1016/j.ijheatmasstransfer.2025.127242","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127242","url":null,"abstract":"<div><div>To address the challenges of energy shortages and the imbalance between energy supply and demand, this study proposes a novel corrugated plate phase change heat accumulator (PCHA) utilizing paraffin as phase change material (PCM) and water as heat transfer fluid (HTF). Heat transfer between the HTF and PCM was carried out through the thin plate, with thermal energy stored in the PCM. The effects of corrugation tilt angle, HTF inlet velocity, HTF inlet temperature, and the number and height of fins on the heat transfer performance of the heat accumulator were investigated. The results indicate that the corrugation tilt angle has negligible impact on heat transfer performance. Optimization of HTF inlet velocity and temperature reduces the total melting time of the PCM by approximately 80 %, with 0.2 m/s identified as the optimal inlet velocity for maximum accumulator efficiency. An appropriate number of fins further improved heat transfer performance by increasing the heat transfer area on both the PCM and HTF sides and promoting HTF turbulence, while maintaining a sufficient PCM volume to preserve overall heat storage capacity. The fins' higher thermal conductivity relative to the PCM enhances heat transfer efficiency, leading to improved temperature uniformity, and the optimal fin height was determined to be 3.5 mm. These findings provide valuable insights for the design and optimization of PCHA.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127242"},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dynamics and heat transfer of saltwater droplets impact on cold superhydrophobic surfaces

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-14 DOI: 10.1016/j.ijheatmasstransfer.2025.127241

Yabo Li , Xiaomin Wu , Huimin Hou , Fuqiang Chu , Zhifeng Hu

{"title":"Dynamics and heat transfer of saltwater droplets impact on cold superhydrophobic surfaces","authors":"Yabo Li , Xiaomin Wu , Huimin Hou , Fuqiang Chu , Zhifeng Hu","doi":"10.1016/j.ijheatmasstransfer.2025.127241","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127241","url":null,"abstract":"<div><div>Ice formation following the impact of saltwater droplets on cold surfaces poses a serious issue for ships during navigation, threatening sailing safety. Therefore, developing anti-icing technologies specifically for saltwater is an urgent need, and superhydrophobic surfaces with superior water repellency show great promise in such applications. However, the dynamics and heat transfer of saltwater droplets impact on cold superhydrophobic surfaces remain poorly understood, prompting our systematic investigation into effects of Weber number, substrate temperature, and salinity on these processes. Experimental results show that morphological evolutions of saltwater droplets from contact to detachment on cold superhydrophobic surfaces is similar to that of water droplets, with high-salinity saltwater droplets detaching more easily from surfaces. The droplet spreading process is dominated by Weber number and is less affected by the substrate temperature and salinity. The droplet retraction time and contact time both increase with decreasing substrate temperature, and the influence of salinity on these times is related to the temperature difference between the substrate and the freezing point of the saltwater. Higher salinities reduce retraction time and contact time at substrate temperatures slightly below the freezing point, but this effect diminishes at excessively low temperatures. Heat transfer between droplets and superhydrophobic surfaces affects liquid properties within the thermal boundary layer. A shorter thermal response time accelerates viscosity alteration and promotes nucleation and ice crystal formation, which hinders the retraction process and prolongs the contact time. These findings provide valuable guidance for the development of anti-icing technologies, particularly for saltwater droplets in cold environments.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127241"},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Experimental and theoretical investigation on heat absorption capacity of hydrocarbon fuel at high temperature and high pressure

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-14 DOI: 10.1016/j.ijheatmasstransfer.2025.127223

Penghao Liu , Suying Bai , Quan Zhu , Liwei Chen , Ruijuan He , Jing Jing , Jinggang Wang

{"title":"Experimental and theoretical investigation on heat absorption capacity of hydrocarbon fuel at high temperature and high pressure","authors":"Penghao Liu , Suying Bai , Quan Zhu , Liwei Chen , Ruijuan He , Jing Jing , Jinggang Wang","doi":"10.1016/j.ijheatmasstransfer.2025.127223","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127223","url":null,"abstract":"<div><div>Hydrocarbon fuels, which can efficiently recover and utilize a large amount of heat through physical and chemical absorption processes, have been applied in the thermal management system of advanced aircraft engines. For physical heat absorption, the isobaric heat capacities of hydrocarbon fuel n-decane are measured and analyzed using the convective mixing technique with temperature ranging from 298.3 K to 770.2 K and pressure ranging from 2.2 MPa to 3.5 MPa. Then a novel correlation model for isobaric heat capacity is developed. For both one-component and multi-component fuels, the novel model exhibits better performance than the traditional model and can accurately depict the 3-D diagrams and 2-D contours of isobaric heat capacities across the liquid, critical and supercritical regions. In addition, the numerical model with a linked-list data structure is constructed to predict the flow characteristics, verifying measurement accuracy while enhancing computational efficiency and data transmission rate. On this basis, the energy balance equation of flowing fuel in the channel is established and its physical heat absorption characteristics are analyzed in detail. Further, for chemical heat absorption, the thermodynamic function method for cracking fuel at high temperature is standardized by an intelligent system, reducing the average relative deviation from 10.41 % to 2.57 % and the maximum relative deviation from 20.45 % to 4.23 %. This work not only quantitatively characterizes the physical and chemical absorption capacities of hydrocarbon fuel, but also develops a standardization method, a novel correlation model and a numerical model to investigate the heat absorption characteristics of hydrocarbon fuel.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127223"},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The general solution of the inverse heat source calibration problem in weld modelling

IF 5 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-05-14 DOI: 10.1016/j.ijheatmasstransfer.2025.127151

D.K. Rissaki , A.N. Vasileiou , P.G. Benardos , G.-C. Vosniakos , M.C. Smith

{"title":"The general solution of the inverse heat source calibration problem in weld modelling","authors":"D.K. Rissaki , A.N. Vasileiou , P.G. Benardos , G.-C. Vosniakos , M.C. Smith","doi":"10.1016/j.ijheatmasstransfer.2025.127151","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127151","url":null,"abstract":"<div><div>In weld modelling, under limited temperature information (e.g. having just fusion boundary), heat source calibration (i.e. estimating heat input efficiency, heat source shape and heat loss) could lead to multiple apparently equivalent solutions, due to the cumulative influence of heat parameters on the induced temperature field. In this paper, an algorithm to estimate heat parameters is presented, which can recognise the existence of multiple good solutions and determine them simultaneously, given any set of temperature evidence points. The algorithm consists of two steps: (1) Reduction of the solution interval by quantifying the uncertainty induced by the limited temperature evidence, with an iterative process of linearising the temperature in respect to heat parameters, and (2) Determination of the exact, general solution of the system by utilising the particular solution of minimum objective function and the kernel of the homogeneous system of equations. For demonstration of the method’s performance on solving the inverse heat source calibration problem, a finite element solver of quasi-stationary state is used, to simulate the temperature field of the direct problem, firstly on an assumed simulated temperature field, and then on temperature data from an arc weld experiment. The results show that the proposed algorithm, within, typically, few iterations (six or less iterations for the representative cases examined in this study), is capable of determining the general solution of heat parameters, that is, not only one heat parameter solution which fulfils the evidence but all possible solutions in case of under-determined systems. This makes the proposed method superior to other optimisation methods previously suggested for heat parameter estimation of ill-posed thermal problems which were able to find just one possible solution at a time.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"249 ","pages":"Article 127151"},"PeriodicalIF":5.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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