Direct Simulation of Droplet Flow With Mass Transfer at Interface

Abstract

A direct simulation code has been developed to solve two-phase flow with mass transfer at the interface. The position of the interface is determined by solving a transport equation of the maker density function, one of front-capturing methods. The present method performs the dissolution of mass of a dispersed phase into a continuous phase as a notable feature. Moreover, transfer of the dissolved mass is solved in the continuous phase. At the interface, mass diffusion flux is calculated both for the boundary condition of mass transfer and for the shrinkage of a droplet. For the validation of the present method, three case studies are successfully demonstrated: rise of single droplet, dissolution from a rigid sphere, and dissolution from a rising droplet. [S0098-2202(00)01303-1]

Bubble-mediated transfer of dilute gas in turbulence

“…Numerical methods for interfacial mass transfer started with Sato, Jung & Abe (2000) and Davidson & Rudman (2002) where the dilute gas concentration is continuous across the interface. Bothe et al.…”

International Collaboration on Co2 Sequestration

“…Computer models of liquid CO 2 plumes were developed by researchers from NERSC - Alendal and Drange (2001a,b), Alendal (2000Alendal ( , 2002, Alendal et al (1998), Drange et al (2001); RITE -Chen et al (2003a,b, 2001, Chen (1999); U. Tokyo - Sato (2001a, 2002a), Sato et al (2000Sato et al ( , 2001, Sato (2001a,b, 2002), Sato and Hama (2001); and MIT -Crounse (2000), Crounse et al (2000Crounse et al ( , 2001Crounse et al ( , 2005. The first three models are 3-D computation fluid dynamics (CDF) codes designed to simulate the details of flow, excess CO 2 , and reduced pH over a range of ambient conditions.…”

Numerical investigation of interfacial mass transfer in two phase flows using the VOF method

“…Since ANSYS FLU-ENT offers the usage of mass transfer source term using the VOF method and the piecewise linear interface calculation (PLIC) scheme, it is possible to add the interfacial mass transfer based on the concentration difference via user-defined functions (UDFs). Therefore, like the study of Sato, Jung, and Abe (2000) we set the saturation concentration at the interface cells as a boundary condition. The VOF method with the PLIC scheme is based on a generalization of the method of Youngs (1982) can be considered in ANSYS Fluent as one of the most accurate scheme to calculate the void fraction (ANSYS, 2009).…”