Assessment of micro-scale heat exchangers efficiency using lattice Boltzmann method and design of experiments  

作　　者：Mokhtar Ferhi Sameh Abidi Ridha Djebali Fateh Mebarek-Oudina 

机构地区：[1]UR22ES12:Modeling Optimization and Augmented Engineering,ISLAIB,University of Jendouba,Béja 9000,Tunisia [2]Higher Institute of Humanities of Jendouba,University of Jendouba,Tunisia [3]Department of Management Information Systems,College of Business Administration,Qassim University,Al-Rass,Al-Qassim,Saudi Arabia [4]Department of Physics,Faculty of Sciences,University of 20 août 1955-Skikda,B.P 26 Road El-Hadaiek,Skikda 21000,Algeria [5]Laboratoire des Matériaux et Génie Energétique(LMGE),University of 20 août 1955-Skikda,Skikda 21000,Algeria

出　　处：《Energy and Built Environment》2024年第6期840-852,共13页能源与人工环境（英文）

摘　　要：The study is focused on the use of nanofluids in a micro-open tall cavity,which is a type of micro heat exchanger(MHE).The cavity is heated from the bottom sidewall in a sinusoidal pattern,and the effects of four input parameters(Ra,Ha,Kn,and Vf)on heat transfer and irreversibility are investigated using numerical simulations based on Lattice Boltzmann Method(LBM).The findings of the study suggest that the local heat transfer on the bottom sidewall is strongly influenced by Ra and Ha,while the surface distribution of entropy generation is mainly dependent on Kn.The study also shows that the optimization of the magnitude and wavelength of the sinusoidal temperature can improve both local heat transfer and surface distribution of entropy generation.The results of the study provide valuable insights into the design of micro heat exchangers and suggest that the optimization of micro-porous geometries using DOE could lead to increased energy efficiency.The study contributes to our understanding of the complex interactions between input parameters in micro heat exchangers and highlights the importance of considering multiple parameters in the design process.

关 键 词：MHD Slip flow regime Micro heat exchanger Design of experiments Optimization 

分 类 号：O62[理学—有机化学]