Prediction of Heat Transfer in a Vertical Bare Tube Upward Flow

Abstract

A vertical bare tube was used to study the behavior of water as a supercritical fluid. The tube was designed with similar properties to the pressure tube of a Supercritical Water-Cooled type reactor. The experiment was repeated with low and high mass flux and the outcomes were compared. A full Computational Fluid Dynamics (CFD) model was prepared to confirm the experimental data. The CFD model helped in predicting the behavior of flow and heat transfer inside the tube which was difficult to achieve by the experimental data.