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    • 4. 发明授权
    • Two-way rigid body coupling in shallow water simulations
    • 浅水模拟中的双向刚体耦合
    • US08041550B1
    • 2011-10-18
    • US12180457
    • 2008-07-25
    • Nils ThüereyMatthias Müller-FischerSimon SchirmMarkus Gross
    • Nils ThüereyMatthias Müller-FischerSimon SchirmMarkus Gross
    • G06G7/48G06G7/56G06G7/50
    • G06F17/5009G06F2217/16
    • One embodiment of the present invention sets forth a technique for computing two-way rigid body coupling in a two-dimensional height field simulation, such as a shallow water simulation. Coupling from a rigid body to a fluid is computed using fluid displacement of the body in each grid cell. The body is projected onto a simulation plane to determine which grid cells are covered by the body. Fluid displacement from the body is computed for each grid cell based on displacement within a corresponding vertical column of fluid. Fluid displacement is distributed to neighboring grid cells prior to a height field computation. Coupling from the fluid to the rigid body is computed by integrating forces imparted on the body by the fluid at each grid cell. The integrated forces are used to compute a new position for the body in a subsequent simulation time step.
    • 本发明的一个实施例提出了一种用于在二维高度场模拟中的双向刚体耦合的计算技术,例如浅水模拟。 使用在每个网格单元中的身体的流体位移来计算从刚体到流体的耦合。 身体投影到模拟平面上,以确定哪个网格细胞被身体覆盖。 基于对应的垂直流体列中的位移,为每个网格单元计算来自身体的流体位移。 在高度场计算之前,流体位移分布到相邻网格单元。 通过在每个网格单元处的流体对身体施加的力的积分来计算从流体到刚体的耦合。 积分力用于在随后的模拟时间步长中计算身体的新位置。