摘要
运用格子boltzmann方法(LBM)和Fluent软件分别对机械零件表面的微小沟槽内的流体流动进行了数值模拟。通过比较流体Re=200时主流速度及沟槽内X方向上不同截面的速度分布曲线,表明LBM能有效的对机件表面微小槽道流体流动进行数值模拟。针对三角形、矩形、梯形微槽道内流体的流动过程进行模拟,得到不同槽道的阻力系数,分析不同雷诺数对涡心位置的影响以及流场分布特点,数值计算结果表明了LBM方法能有效模拟微槽内的流体流动现象。
The fluid flow passed the micro channel on the surface of machinery has been simulated numerically by using Lattice Boltzmann Method（LBM） and Fluent.The velocity distribution on pipe center line and several sections in X direction is compared when the Re equals 200,the result shows that the LBM method is better in simulating the fluid flow passed micro channel.The LBM is used in the simulation to demonstrate the flow characteristic of fluid in three different types of micro channel： triangle,and rectangle,and ladder.The resistance coefficient is got,and the flow field distribution features under different Reynolds number are investigated.The result shows that LBM is an effective simulation method of fluid flow in a micro channel.
出处
《机械研究与应用》
2012年第6期74-77,80,共5页
Mechanical Research & Application
基金
国家自然科学基金资助项目(50806069&51076146)
关键词
机件表面
格子BOLTZMANN方法
微槽
动量转换法
roughness on mechanical
lattice boltzmann method
numerical simulation of fluent
momentum exchange method
