Tapas Kumar Dutta

Mathematical modeling and experimental studies on solar energy storage in a phase change material

Solar energy storage in phase change material (PCM) is an effective method. A comprehensive study on a PCM storage system and development of a mathematical model have been attempted in this work in order to describe the melting characteristics of paraffin wax encapsulated in the annulus of two concentric cylinders. The movement of the separation boundary between the solid and molten wax was experimentally determined and compared with theoretical solution.

Monte Carlo simulation of the crystal size distribution in a continuous sucrose crytallizer

Abstract Monte Carlo simmulation provides an easy way to predict the product size distribution from a continuous crystallizer using mixed suspension with mixed product removal (MSMPR). A mathematical model and simulation technique have been developed for this purpose. The simulation results are compared with the available experimental data obtained from a continuous sucrose crytallizer.

Numerical study of micro-scale gas flow using finite volume method

Numerical studies of subsonic gas flow through micro-thruster as no-slip benchmark problem and high speed gas flow through short micro-channel with slip and temperature jump correction have been carried out by solving two dimensional compressible Navier-Stokes (NS) system of equations. A 2-D explicit finite volume (FV) flow solver has been developed using modified advection upwind splitting methods (AUSM+) to achieve the solution of micro-scale gas flow having high resolution shock capturing ability. The results obtained are compared with published 1-D numerical, Direct Simulation Monte Carlo (DSMC) and 2-D Finite element (FEM) results. This study utilizes the robustness and accuracy of AUSM+ and FVM to predict the micro-scale gas flows with simple explicit time marching, ranging from subsonic to supersonic flow.