Investigation of pressure loading rates on streaming potentials in bone  

作　　者：XU LianYun HOU ZhenDe WANG Hong 

机构地区：[1]Department of Mechanics, Tianjin University, Tianjin 300072, China [2]Tianjin People's Hospital, Tianjin 300121, China

出　　处：《Science China(Technological Sciences)》2011年第6期1376-1381,共6页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos 10672119 and 10732080)

摘　　要：When load is applied to bone,it deforms and causes fluid pressure to build up in bone.The pressure gradient between different portions of the bone microcnannels drives fluid flow through them.This kind of bone fluid flow can induces the streaming potentials which are considered to play a role for bone remodeling.Aimed to determine the impact of ribbed rough inner surfaces of the microchannels on the streaming potentials,streaming potentials were measured as bone fluid flowed through the mcrospaces of thin cylinder bone samples under different pressure loading rates.The results show that the streaming potentials decrease with the increase of the pressure loading rates.A digital simulation calculation was performed and the results demonstrated that there were turbulent flows near the inner wall surfaces,which making the streaming potentials smaller in bone microchannels.

关 键 词：BONE streaming potentials pressure rising rate turbulent flow 

分 类 号：TM406[电气工程—电器] TE312[石油与天然气工程—油气田开发工程]