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arXiv · 1601.06646

Fast heat transfer calculations in supercritical fluids versus hydrodynamic approach

Vadim Nikolayev·A Dejoan·Y. Garrabos·D Beysens
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Abstract

This study investigates the heat transfer in a simple pure fluid whose temperature is slightly above its critical temperature. We propose a efficient numerical method to predict the heat transfer in such fluids when the gravity can be neglected. The method, based on a simplified thermodynamic approach, is compared with direct numerical simulations of the Navier-Stokes and energy equations performed for CO2 and SF6. A realistic equation of state is used to describe both fluids. The proposed method agrees with the full hydrodynamic solution and provides a huge gain in computation time. The connection between the purely thermodynamic and hydrodynamic descriptions is also discussed.

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Vadim Nikolayev, A Dejoan, Y. Garrabos, D Beysens. 2016-01-25. Fast heat transfer calculations in supercritical fluids versus hydrodynamic approach. https://doi.org/10.1103/physreve.67.061202

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