三维矩形微通道内电渗流动与换热的LB模拟
Journal of Engineering Thermophysics(2019)
Abstract
采用一体化的格子Boltzmann方法(LBM)对三维矩形微通道内的电渗流动换热问题进行了模拟,获得了NP模型和PB模型下微通道截面的电势分布、无量纲速度分布及温度分布,分别与D-H近似解及解析解对比以验证正确性及精度.进一步对比分析了不同模型下壁面异质电势正电荷分布并模拟了三维壁面异质电势分布微通道内的电渗对流换热问题,结果表明PB模型描述电势场具有较大局限性,而电势分布情况对微通道内的流动模式与对流传热具有明显的影响.
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