Mathematical medaling of heat transfer, fluid flow and solidification in melt spinning process

The present work deals with the study of heat transfer, fluid flow and solidification phenomena of rapidly solidifying amorphous ribbons in the melt spinning process. Finite volume based mathematical model using Navier-Strokes equation coupled with heat transfer equations has been developed for the melt spinning process. The model uses volume of fluid method to capture free surface interface. The surface tension force has been coupled with the goveminff equation in order to get capillary effects on shape and size of the metal pool. The SIMpLE algorithm is used to solve the goveminff equations. The model Predicts the effects of different process parameter such as wheel RPM, wheel geometry, superheat, crucible gap and cooling conditions on ribbon thickness, wheel temperature and melt pool, Transient development of heat transfer coefficient over wheel surface and wheel temperature have been studied. The simulation result have been verified with the experimental data. Reasonably good match between the simulated and experimental results indicates that the mathematical model in the thesis can be used for optimizing the melt spinning process.by Rohit MishraM.Tech