Thermal Analysis Of Cooling Process Of A High - Temperature Vertical Hollow Cylinder Using A Water - Air Spray

Abstract

In this paper, a methodology for solution of transient thermal problem is presented using finite-element method. A vertical hollow circular cylinder is heated up to a specific temperature using moving induction heating, and the heated parts then quenched by moving water-air spray. The effects of natural convection with air on the both inner and outer surfaces of cylinder, and also radiation of outer surface of cylinder with ambient, on cooling process are taken into account. The transient thermal conduction equation is solved to obtain temperature distribution produced by the moving heat source in work-piece over time with considering of moving free and forced (due to spray) convection boundary conditions. This procedure includes temperature-dependent properties. For quenching of work-piece, a specific kind of atomized spray cooling is used. Spray cooling using a mixture of water and air with different mass fractions; hence, with spray cooling, one can raise or lower the cooling rate by increasing or decreasing the amount of liquid in the mixture. Keywords— water-air spray, cooling process, finite-element method, vertical hollow cylinder, temperature distribution

9 Figures and Tables

Cite this paper

@inproceedings{Shokouhmand2010ThermalAO, title={Thermal Analysis Of Cooling Process Of A High - Temperature Vertical Hollow Cylinder Using A Water - Air Spray}, author={H. Shokouhmand and Salman Ghaffari}, year={2010} }