1997, No. 102
Modelling of a buoyancy-influenced flow of supercritical pressure helium in a heated vertical pipe
DARIUSZ P. MIKIELEWICZ
Abstract
The work reports the results of the numerical simulations of the experiments performed on buoyancy-influenced ascending and descending flow of supercritical pressure helium in a heated vertical tube using the Launder and Sharma low-Reynolds number k ~ ε turbulence model. The response of the turbulence model has been found to be remarkably satisfactory under such severe conditions. However, the model is still not reliable enough to be recommended for the adequate modelling of the buoyancy-influenced flows.
Keywords:
turbulence, vertical pipes, governing equationsDownload: