公开(公告)号：US07203606B2

公开(公告)日：2007-04-10

申请号：US11275142

申请日：2005-12-15

申请人： Kota Nakano ,  Akira Asai

发明人： Kota Nakano ,  Akira Asai

IPC分类号： G01F17/00

CPC分类号： G06F17/5018 ,  G06F2217/16

摘要： During an incompressible fluid movement, three consecutive times during the movement of the fluid are called first, second, and third times in time order, calculation is performed with two different types of lattices for the first and third times and for the second time. Momentum and mass density at the first time are temporally developed to the third time in accordance with a conservation law by using an upwind velocity field. A pressure at the second time is determined so that a velocity field derived from momenta at the third time satisfies an incompressibility condition, and the field at the third time is corrected by adding a change in momentum caused by a pressure term using the determined pressure. This prevents pressure vibration and avoids the complexity of advective term calculation.

摘要翻译： 在不可压缩的流体运动期间，在流体运动期间连续三次被称为第一次，第二次和第三次的时间顺序，对于第一次和第三次以及第二次以两种不同类型的格架进行计算。 第一次的动量和质量密度通过使用逆风速度场根据守恒定律在时间上发展到第三次。 确定第二次的压力使得从第三次的动量导出的速度场满足不可压缩条件，并且通过使用所确定的压力加上由压力项引起的动量变化来校正第三次的场。 这可以防止压力振动，避免平流项计算的复杂性。