Thermal Science最新文献_第4页

Artificial neural network assisted multi-objective optimization of a methane-fed DIR-SOFC system with waste heat recovery 人工神经网络辅助下的带余热回收的甲烷供气DIR-SOFC系统多目标优化

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci2304413a

Unsal Aybek, Lutfu Namli, Mustafa Ozbey, Bekir Dogan

引用次数: 0

Nine-parameter path synthesis of planar four-bar mechanism with the aid of the general equation of coupler curve 基于连杆曲线一般方程的平面四杆机构九参数轨迹综合

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci2304349m

Huseyin Mutlu

引用次数: 0

Investigation of velocity distribution in channels and chambers of the electrostatic precipitator at TPP Nikola Tesla Unit A1 TPP尼古拉特斯拉A1单元静电除尘器通道和室内速度分布的研究

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230816244m

Zoran Markovic, Milic Eric, Predrag Stefanovic, Ivan Lazovic, Aleksandar Milicevic, Marko Mancic, Milica Jovcevski, Rastko Jovanovic

引用次数: 0

Corrigendum: Marangoni convection of nanofluid in a wavy trapezoidal enclosure 勘误:波纹梯形外壳中纳米流体的马兰戈尼对流

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230918192e

E Editorial

{"title":"Corrigendum: Marangoni convection of nanofluid in a wavy trapezoidal enclosure","authors":"E Editorial","doi":"10.2298/tsci230918192e","DOIUrl":"https://doi.org/10.2298/tsci230918192e","url":null,"abstract":"Simeon Oka, Editor-in-Chief Emeritus of the journal Thermal Science request that it is, due to request of the Corresponding author of this paper, necessary to correct Acknowledgement of the paper MARANGONI CONVECTION OF NANOFLUID IN A WAVY TRAPEZOIDAL ENCLOSURE written by Sharifah Nuriza Binti Syed Muhammad Naquib AL?AIDRUSa, Zailan Bin SIRIa*, and Mohd Nashrul Bin Mohd ZUBIRb a Institute of Mathematical Sciences, University Malaya, Kuala Lumpur, Malaysia b Department of Mechanical Engineering, University Malaya, Kuala Lumpur, Malaysia Original scientific paper https://doi.org/10.2298/TSCI21S2339A published in the journal Thermal Science, Vol. 25, Year 2021, Special issue 2, pp. S339-S345 since due to change regulations accepted by Government of Malaysia Condolement should have different and more detailed form. Instead of: ACKNOWLEDGEMENT This paper is part of a research project supported by the Malaysian Ministry of Higher Education Fundamental Research Grant no. FP068-2020. The authors would also like to express their thanks to the University of Malaya for supporting this research under grant no. IIRG006C19IISS. has to be written: Acknowledgment The work is supported financially by the Ministry of Higher Education Malaysia via Fundamental Research Grant Scheme (FRGS/1/2020/STG06/UM/02/4) and Impact Oriented Interdisciplinary Research Grant No. IIRG006C-19IISS. Link to the corrected article <a href=\"http://dx.doi.org/10.2298/TSCI21S2339A\">10.2298/TSCI21S2339A</a>","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135556369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Study on the effect of width and slope of large cross-section tunnel on critical velocity of fire 大断面隧道宽度和坡度对临界火速的影响研究

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230328195s

Su Liu

引用次数: 0

Experimental and numerical investigation of Rayleigh-Bénard convection in rectangular cavity with motor oil 加机油的矩形腔内瑞利-巴程纳德对流的实验与数值研究

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230607216z

Predrag Zivkovic, Mladen Tomic, Sadoon Ayed, Cristian Barz, Drago Sever

引用次数: 0

Cattaneo-Christov heat flux effect on Sakiadis MHD boundary layer transport phenomena in the Jeffrey fluid Cattaneo-Christov热通量对Jeffrey流体中sakadiis MHD边界层输运现象的影响

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci221013214o

Zarith Othman, Zailan Siri, Muhamad Aziz, Kohilavani Naganthran

{"title":"Cattaneo-Christov heat flux effect on Sakiadis MHD boundary layer transport phenomena in the Jeffrey fluid","authors":"Zarith Othman, Zailan Siri, Muhamad Aziz, Kohilavani Naganthran","doi":"10.2298/tsci221013214o","DOIUrl":"https://doi.org/10.2298/tsci221013214o","url":null,"abstract":"This study aims to perform a numerical simulation of the boundary flow with the characteristic Sakiadis flow of the magnetohydrodynamic (MHD) Jeffrey fluid under the Cattaneo-Christov heat flux model over the horizontal plate. The similarity transformation for the local similarity solution was used to reduce the set of governing equations to non-linear ordinary differential equations. The equations were solved by using ?dsolve? command with the numeric option for the boundary value problem in Maple. Simulations have been carried out for different values of the relaxation to retardation times, the Deborah number, the magnetic field parameter, the heat flux relaxation time, the Prandtl number, and the Schmidt parameter. A comparative study of the numerical results from the previously published paper with the present result for the dimensionless velocity gradient over the horizontal plate shows excellent agreement. It has been found that the growth of the Deborah number leads to the dimensionless velocity gradient enhancement, while the increment of the relaxation to retardation times parameter and the magnetic field parameter indicates the opposite trend. The heat transfer rate noticeably decreased with an increment in the Prandtl number and thermal relaxation time at the fluid regime. Also, fluid concentration decreases with larger values of the Schmidt parameter.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136005808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of internally mounted helical fins on the separation performance of a cylindrical gas-solid cyclone separator 内装螺旋翅片对圆柱形气固旋风分离器分离性能的影响

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230527204f

Zeming Fu, Huagen Wu, Baohua Gao, Mengtao Liang, Guanghua Wu, Shuo Shang, Xin Zhang, Hongye Huang, Siwei Chen

{"title":"Effect of internally mounted helical fins on the separation performance of a cylindrical gas-solid cyclone separator","authors":"Zeming Fu, Huagen Wu, Baohua Gao, Mengtao Liang, Guanghua Wu, Shuo Shang, Xin Zhang, Hongye Huang, Siwei Chen","doi":"10.2298/tsci230527204f","DOIUrl":"https://doi.org/10.2298/tsci230527204f","url":null,"abstract":"In this study, an innovation was made by adding helical fins on the vortex finder of a cylindrical gas-solid cyclone separator, and the effect of this structural improvement on the separation performance was analyzed based on the flow field characteristics. The results show that both cyclones with and without helical fins exhibit a separation efficiency of almost 100 % for particles larger than 5 ?m. As the inlet velocity increases, the effect of adding helical fins on the overall separation efficiency decreases, with a relative deviation of only 0.16 % at an inlet velocity of 27 m/s, while it becomes increasingly effective in reducing energy consumption, with a pressure drop of 25.33 %. The mechanism of the overall performance improvement lies in the fact that the helical fins change the flow field distribution in the cyclone, where the turbulence intensity in the vortex finder is significantly reduced, the tangential velocity of the external vortex is decreased, and the pressure gradient is reduced. The purpose of this paper is to provide new ideas for the optimal design of the internal components of the cyclone separator.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136006063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Thermal recovery test for determining the thermal conductivity of the soil 测定土壤导热性的热恢复试验

4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230825223v

Marija Vasilev, Milos Banjac

引用次数: 0

Investigation of thermal and dimensional behavior of 3-D printed materials using thermal imaging and 3-D scanning 利用热成像和三维扫描技术研究三维打印材料的热行为和尺寸行为

IF 1.7 4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci2301021g

Z. Golubovic, M. Travica, Isaak Trajković, A. Petrovic, Ž. Mišković, N. Mitrović

{"title":"Investigation of thermal and dimensional behavior of 3-D printed materials using thermal imaging and 3-D scanning","authors":"Z. Golubovic, M. Travica, Isaak Trajković, A. Petrovic, Ž. Mišković, N. Mitrović","doi":"10.2298/tsci2301021g","DOIUrl":"https://doi.org/10.2298/tsci2301021g","url":null,"abstract":"Fused deposition modeling is one of the most widely used 3-D printing technologies, among other additive manufacturing processes, because it is easy to use, can produce parts faster, and the cost of the finished part is low. Printing processes and finished parts are often studied and characterized using different techniques to collect mechanical, numerical, thermal and dimensional data, with the aim of improving and optimizing the result. The first part of this research is based on the observation of temperature changes with a thermal imaging camera during the fused deposition modeling printing process and during the cooling process after printing. Specimens of polylactic acid and polylactic acid-X improved with second-phase particles were prepared to compare the thermal and dimensional properties of the two materials. The obtained results determined the characteristic temperature behavior of the materials. In the second part of the research, a 3-D optical scanner was used to verify the stability and accuracy of the printed specimens over time. The proposed measurement period showed that stabilization of the parameters takes place, and further follow-up should be performed thereafter.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68255911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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