修正内嵌边界法对颗粒运动的直接模拟

工程热物理学报 , 2008, 29(1): 99-101.

1.能源清洁利用国家重点实验室,浙江大学,浙江杭州,310027

2.能源清洁利用国家重点实验室,浙江大学,浙江杭州,310027

3.能源清洁利用国家重点实验室,浙江大学,浙江杭州,310027

基金项目: 国家自然科学基金(50506027;50236030)

DIRECT SIMULATION OF PARTICULATE FLOW USING MODIFIED IMMERSED BOUNDARY METHOD

本文提出了一种基于内嵌边界法(IBM)的思想,在描述颗粒只有较少网格时能较为准确地计算气固多相流的模型.模型依据边界层理论,通过定义颗粒表面的速度分布函数来修正由于计算网格尺度大于边界层厚度所带来的误差.本文通过计算单颗粒绕流和单颗粒沉降的最终沉降速度并与实验进行比较验证了本文模型的准确性.

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