Evaluation of Fluid-to-Fluid Scaling Method for Water and Carbon Dioxide at Supercritical Pressure

Abstract

A flow loop at the University of Wisconsin used for supercritical water (SCW) experiments is being modified to perform similar tests with supercritical carbon dioxide (SCO₂). Scaled equivalent conditions in SCO₂ are determined by conserving key non-dimensional parameters from the SCW tests. The predicted heat transfer in the SCO₂ will be compared to measured data to evaluate the validity of the scaling method. As a secondary basis for verification, FLUENT CFD simulations for the scaled SCO₂ conditions are compared to simulations of the SCW experiments, which demonstrate good agreement with optically-measured turbulence data.