Many-body dissipative particle dynamics with energy conservation:temperature-dependent long-term attractive interaction

作     者：Jie LI Kaixuan ZHANG Chensen LIN Lanlan XIAO Yang LIU Shuo CHEN Jie LI;Kaixuan ZHANG;Chensen LIN;Lanlan XIAO;Yang LIU;Shuo CHEN

作者机构：School of Aerospace Engineering and Applied MechanicsTongji UniversityShanghai 200092China Institute of Biomechanics and Medical EngineeringAMLDepartment of Engineering MechanicsTsinghua UniversityBeijing 100084China School of Mechanical and Automotive EngineeringShanghai University of Engineering ScienceShanghai 201620China Department of Mechanical EngineeringThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2022年第43卷第4期

页      面：497-506页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(Nos.11872283,12002242,11902188,and 12102218) the Shanghai Science and Technology Talent Program(No.19YF1417400) the China Postdoctoral Science Foundation(No.2020M680525) 

主　　题：surface tension Young’s equation equilibrium contact angle many-body dissipative particle dynamics with energy conservation(MDPDE) 

摘      要：Heat and mass transfer during the process of liquid droplet dynamic behaviors has attracted much attention in *** mesoscopic scale,numerical simulations of liquid droplets motion,such as impacting,sliding,and coalescence,have been widely studied by using the particle-based method named many-body dissipative particle dynamics(MDPD).However,the detailed information on heat transfer needs further *** paper develops a modified MDPD with energy conservation(MDPDE)by introducing a temperature-dependent long-term attractive *** fitting or deriving the expressions of the strength of the attractive force,the exponent of the weight function in the dissipative force,and the mesoscopic heat friction coefficient about temperature,we calculate the viscosity,self-diffusivity,thermal conductivity,and surface tension,and obtain the Schmidt number Sc,the Prandtl number P r,and the Ohnesorge number Oh for 273 K to 373 *** simulation data of MDPDE coincide well with the experimental data of water,indicating that our model can be used to simulate the dynamic behaviors of liquid ***,we compare the equilibrium contact angle of droplets wetting on solid surfaces with that calculated from three interfacial tensions by MDPDE *** coincident results not only stand for the validation of Young’s equation at mesoscale,but manifest the reliability of our MDPDE model and applicability to the cases with free *** model can be extended to study the multiphase flow withcomplex heat and mass transfer.