A Novel Level Set-Based Immersed-Boundary Method for CFD Simulation of Moving-Boundary Problems
A Novel Level Set-Based Immersed-Boundary Method for CFD Simulation of Moving-Boundary Problems
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DOI：
10.1080/10407790.2013.756258
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
M. Shrivastava;A. Agrawal;A. Sharma
中科院分区：
文献类型：
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作者：
M. Shrivastava;A. Agrawal;A. Sharma
提出了一种新的基于Level Set的浸没边界方法(LSIBM)，用于计算流体力学(CFD)对运动浸没边界流动的模拟。在不同的时刻，水平集方法(LSM)被用来准确地捕捉运动边界，其值被用来正确地数值实现流体区的边界条件和守恒律。该方法在俯仰翼型绕流和四种不同的圆柱体绕流问题上得到了验证。该方法将运动物体上的边界条件直接应用于离散方程，具有更强的物理基础和更易于数值实现的特点。
A novel level set-based immersed-boundary method (LSIBM) is proposed for a transient computational fluid dynamics (CFD) simulation of flow across a moving immersed boundary. At various time instants, the level set method (LSM) is used to capture the moving boundary accurately, and its value is used for proper numerical implementation of boundary conditions and conservation laws in the fluid region. The method is validated on flow across a pitching airfoil and four different problems on flow across an oscillating cylinder. The boundary conditions on the moving body are applied directly in the discrete equations: The method is more physics-based as well as easier to implement numerically.