Bionic Design and Finite Element Analysis of Elbow in Ice Transportation Cooling System  

作　　者：Dejun Miao~(1,2), Xiuhua Sui~3, Linjing Xiao~3 1. Key Laboratory of Mine Hazard Prevention and Control (Ministry of Education, China), Shandong University of Science and Technology, Qingdao 266510, P. R. China 2. School of Architecture, Tsinghua University, Beijing 100084, P. R. China 3. College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266510, P. R. China 

出　　处：《Journal of Bionic Engineering》2010年第3期301-306,共6页仿生工程学报（英文版）

基　　金：supported bv the National Natural Science Foundation of China(Grant No.50975164);the Science and Technology Planning Project of Shandong Proyince(Grant No.J09LD05);the Foundation of Key LaboratOry of Mine Hazard Prevention and Control (Grant No.MDPC0810)

摘　　要：With the increase in mining depth, mine heat harm has appeared to be more prominent. The mine heat harm could be resolvedor reduced by ice refrigeration. Thus, ice transportation through pipeline becomes a critical problem; typically flowresistance occurs in the elbow. In the present study, according to the analysis of the surface morphology of fish scale, abiomimetic functional surface structure for the interior wall of elbow is designed. Based on the theory of liquid-solid two phaseflow, a CFD numerical simulation of ice-water mixture flowing through the elbow is carried out using finite element method.Conventional experiments of pressure drop and flow resistance for both bionic and common elbows are conducted to test theeffect of the bionic elbow on flow resistance reduction. It is found that with the increase in the ice mass fraction in the ice-watermixture, the effect of bionic elbow on resistance reduction becomes more obvious.With the increase in mining depth, mine heat harm has appeared to be more prominent. The mine heat harm could be resolvedor reduced by ice refrigeration. Thus, ice transportation through pipeline becomes a critical problem; typically flowresistance occurs in the elbow. In the present study, according to the analysis of the surface morphology of fish scale, abiomimetic functional surface structure for the interior wall of elbow is designed. Based on the theory of liquid-solid two phaseflow, a CFD numerical simulation of ice-water mixture flowing through the elbow is carried out using finite element method.Conventional experiments of pressure drop and flow resistance for both bionic and common elbows are conducted to test theeffect of the bionic elbow on flow resistance reduction. It is found that with the increase in the ice mass fraction in the ice-watermixture, the effect of bionic elbow on resistance reduction becomes more obvious.

关 键 词：bionic elbow two phase flow ice transportation flow resistance reduction pressure loss 

分 类 号：R318.0[医药卫生—生物医学工程]