IBM/ICM方法研究运动物体与自由液面的相互作用

项目名称： IBM/ICM方法研究运动物体与自由液面的相互作用

项目编号： No.10802075

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 邓见

作者单位： 浙江大学

项目金额： 21万元

中文摘要： 运动物体与自由液面的相互作用广泛存在于自然界、工业及国防科技领域，本项目提出将浸没边界法（IBM）与界面捕捉方法（ICM）相结合的IBM/ICM 方法，用于模拟这类问题。这种均一化的气液固三相流场求解方法基于非贴体网格，同时解决流固耦合问题及气液交界面捕捉问题。算法研究过程针对浸没边界法、界面捕捉方法，以及两种算法的结合三方面展开，研究重点为浸没边界法在湍流模拟及复杂形状流场适用性方面的改进，以及浸没边界法与界面捕捉方法的结合过程中三相接触线的准确捕捉。作为研究成果，在保持一定通用性的前提下，开发出相应的计算程序，充分考虑算法的效率、可靠性及稳定性，并应用到三维物体出水与入水问题。IBM/ICM 方法既是浸没边界法的扩展，同时又是新算法的尝试，通过本项目的研究，可以为运动物体与自由液面相互作用的模拟发展一个更加高效和精确的直接数值模拟方法。

中文关键词： IBM/ICM 方法；浸没边界法；界面捕捉方法；流固耦合；气液固三相流

英文摘要： The interactions between moving bodies and free surfaces are widely observed in nature, industry and national defense industry. In this project, the Immersed Boundary Method (IBM) and Interface Capture Method (ICM) are combined to solve these problems. This new method with the name of IBM/ICM is a uniform solving procedure for three-phase flow field, which is based on non-body-fitted grid. The first step of the plan is for algorithms research, in which the IBM, ICM, and IBM/ICM are studied respectively. We focus on improving the suitability of the IBM on turbulence modeling and the flow field with complex geometrical configurations. As the main achievement of this project, a new solver will be designed to deal with the water entry or exit problem. These two typical problems can well validate the efficiency, reliability and stability of the algorithm. IBM/ICM is an expansion of the immersed boundary method; moreover, it is an attempt of new method. On the whole, this project provides a new direct simulation method with high-efficiency and accuracy for the interactions between moving bodies and free surfaces.

英文关键词： IBM/ICM method; Immersed boundary method; Interface capture method; Fluid-structure coupling; Three-phase flow