Numerical analysis of jet and submerged hydraulic jump using moving particle semi-implicit method
Numerical analysis of jet and submerged hydraulic jump using moving particle semi-implicit method
复制标题
射流和水下水跃的运动粒子半隐式数值分析
DOI：
10.1139/l2012-023
复制
发表时间：
2012
影响因子：
1.4
通讯作者：
A. Shakibaeinia
中科院分区：
文献类型：
--
作者：
F. Nazari;Yee‐Chung Jin;A. Shakibaeinia
近几十年来，无网格粒子(拉格朗日)方法在流体研究中得到了广泛的应用。这些方法的一大优势是能够对边界和界面上的变形和喷雾生成进行建模，这是射流和跳跃的常见问题，使用欧拉方法可能很困难。发展了弱可压缩移动质点半隐式方法(WC-MPS)，并将其应用于数值模拟中。该模型首先在射流模拟中得到验证，然后应用于水下水跃。研究了射流入口不同距离处的流型、速度分布和湍流剪应力，并与解析解和实验数据进行了比较。利用这种方法，可以跟踪进入区域的入口流动颗粒，以及相应的湍流流场中涡旋和再循环的发展情况。将MPS计算结果与潜水水跃试验数据进行了对比，结果表明，MPS计算结果与试验数据吻合较好。
Mesh-free particle (Lagrangian) methods have been used in a wide variety of applications in fluids studies in recent decades. A big advantage of these methods is the ability to model the deformations and spray generation in boundaries and interfaces, which are common problems with jets and jumps and may be difficult using Eulerian methods. Weakly compressible moving particle semi-implicit method (WC-MPS) has been developed and is used in this paper. The model is first validated for jet simulation and then applied to submerged hydraulic jumps. The flow regime, velocity distribution, and turbulence shear stresses at different distances from the jet inlet are investigated and compared with the analytical solution and experimental data. With this method, the inlet flow particles entering the domain can be tracked, as well as the development of vortices and recirculation in the corresponding turbulent flow fields. The comparison of MPS results with experimental data for submerged hydraulic jumps shows the usin...