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力学学报  2015 

紧致插值曲线方法在流向强迫振荡圆柱绕流中的应用

DOI: 10.6052/0459-1879-14-387, PP. 441-450

Keywords: 柱体绕流,振荡圆柱,紧致插值曲线方法,科勒冈-卡朋特数,浸入边界法

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Abstract:

利用紧致插值曲线(constrainedinterpolationprofilemethodinZhejiangUniversity,CIP-ZJU)数学模型,对低科勒冈-卡朋特(Keulegan–Carpenter)数KC静止流体中振荡圆柱以及雷诺数Re=200时流向强迫振荡圆柱绕流进行了数值模拟.模型在直角坐标系统下建立,采用紧致插值曲线方法作为流场的基本求解器离散了纳维-斯托克斯方程,基于多相流的理论实现流固耦合同步求解,利用浸入边界方法处理固体边界.模拟结果与现有文献结果进行比较,二者吻合情况较好,验证了此方法对于计算复杂流动问题的可靠性.

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