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首页> 外文会议>International ocean and polar engineering conference;International Society of Offshore and Polar Engineers >OpenFOAM Finite Volume Method Implementation of a Fully Nonlinear Potential Flow Model for Simulating Wave-Structure Interactions
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OpenFOAM Finite Volume Method Implementation of a Fully Nonlinear Potential Flow Model for Simulating Wave-Structure Interactions

机译：完全非线性势流模型的OpenFOAM有限体积方法实现，用于模拟波结构相互作用

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We develop an interface-tracking algorithm to solve the twodimensionaltime dependent free surface flows using a finite volumemethod with full nonlinear free surface boundary conditions andmoving grids. The velocity potential is obtained inside the fluiddomain by solving a mixed boundary value problem. The velocity isthen calculated by the gradient of the velocity potential. The motion ofthe free surface is captured by integrating in time the kinematicboundary condition, which is based on the free surface volume flux. Inthe implemented scheme, the free surface is allowed to deform and anew mesh is generated at each time step. The basis of this model is thefreely available open-source computational fluid dynamic toolboxOpenFOAM®. We examine the spatial and temporal convergence ofthe scheme. We also compare wave periods and evolution of waveamplitudes for a range of wave conditions with the analytical solutions,and a good agreement is found. The solver is intended to be a first steptowards an advanced numerical wave tank solving both incompressibleand compressible flows interacting with structures undergoing largebody motions.
机译：我们开发了一种接口跟踪算法来解决二维问题 使用有限体积的随时间变化的自由表面流 完全非线性自由表面边界条件的方法 移动网格。在流体内部获得速度势 通过解决混合边值问题解决领域。速度是 然后通过速度势的梯度来计算。的运动 通过及时整合运动学来捕获自由表面 边界条件，它基于自由表面体积通量。在 实施方案中，允许自由表面变形，并且 每个时间步都会生成一个新的网格。该模型的基础是 免费提供的开源计算流体动力学工具箱 OpenFOAM®。我们研究了时空融合 方案。我们还比较了波浪周期和波浪的演变 分析解决方案在一定范围内波动条件下的振幅， 并找到了很好的协议。该求解器旨在作为第一步 迈向同时解决不可压缩问题的先进数值波箱 和可压缩流与经历大变形的结构相互作用 身体动作。

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