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微通道气体流动的格子波尔兹曼模拟
Lattice Boltzmann simulation of gas microchannnel flows
【摘要】 通过隐式格子波尔兹曼方程,并采用壁面平衡边界条件以及二阶关系,模拟了微通道气体流动中的非线性压力和壁面滑移速度,模拟结果与Arkilic的解析结果十分吻合,验证了格子波尔兹曼方法在滑移流区的有效性。
【Abstract】 Gas microchannel flows was simulated by implicit lattice Boltzmann equation with wall equilibrium boundary condition and second-order Knudsen-number-relaxation-time relation.The results of nonlinearity of pressure and slip velocity at wall agree well with Arkilic’s analytical solution,which could verify the lattice Boltzmann method in the slip flow region.
【关键词】 微通道;
格子波尔兹曼方法;
微流动;
滑移流;
【Key words】 microchannel; lattice Boltzmann method; micro flow; slip flow;
【Key words】 microchannel; lattice Boltzmann method; micro flow; slip flow;
- 【文献出处】 功能材料与器件学报 ,Journal of Functional Materials and Devices , 编辑部邮箱 ,2008年01期
- 【分类号】TP21
- 【被引频次】8
- 【下载频次】461