Analysis of Jet Flows with the Two-Fluid Particle Interaction Method

Abstract

The particle interaction method called MPS (Moving Particle Semi-implicit) method has been developed in recent years, which is formulated by representing the differential operators in Navier-Stokes equation as the interaction between particles characterized with a kernel function and adopts a mesh-free algorithm. This method is suitable especially for treating liquid breakup. We extended the MPS method to two-fluid system, introduced a potential-type surface tension, and modified the calculation algorithm to simulate jet flows. The objective of this study is to evaluate the interfacial area (or, so called binary contact area) of immiscible two-fluid systems with a chemical reaction, where one is injected as a jet into a pool of the other fluid. As a first step, we investigated if the proposed method is capable of reproducing the hydrodynamics of jet flow by analyzing Tanasawa's experiment. In this paper, we describe the formulation and the calculation algorithm of the method, and results of the verification studies.