Numerical simulation of the three-dimensional flow in an agitator with meshless method

Moving particle semi-implicit (MPS) method was expanded from two-dimensional to three-dimensional problems. The cylindrical-coordinate system was introduced to the particle initial setting, which made the setting of the bevel edge and the curved boundary easier and more accurate than those in Cartesian coordinates system. The improvement of initial particle setting also made the setting of boundary conditions more accurate. The flow in a straight-blade agitator was simulated with moving boundary model. Besides these, a new method was introduced which could simplified the initial particle setting process and made it possible for three-dimensional problems with complex geometry.