Loosely coupled fluid/solid heat transfer analysis using a dynamic HTC approach

Authors

Corral, R., Chaquet, J.M., Pastor, G. - Industria de Turbo Propulsores S.A, Madrid
Z. Wang - Polytechnic University, Madrid, Spain

Abstract

This paper presents an improved approach of loosely coupled fluid/solid heat transfer method for the purpose of reducing computational time cost. The numerical analysis of the coupling process of an one-dimensional model, shows that the convergence behaviour is influenced by the physical Biot number and a virtual heat transfer coefficient. The novelty of the method is based on the use of dynamic evaluation of the numerical parameters of the coupling, namely the virtual heat transfer coefficient. It is shown that the computational time can be significantly reduced comparing to previous existing methods. The new approach only spends less than 2.5 times the cost of stand-alone CFD simulation of the problem to obtained a coupled fluid/solid thermal analysis.