Conference Proceedings

Direct numerical simulations of centrifugal buoyancy induced flow in a closed rotating cavity

D Saini, D Chung, RD Sandberg

Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018 | Published : 2018

Abstract

© 2018 Australasian Fluid Mechanics Society. All rights reserved. The present study is a numerical investigation of buoyancy-induced flow in a rapidly rotating system. This problem is relevant to planetary flows in the atmosphere as well as to rotating machinery such as gas turbine, where rapid rotation and temperature gradients lead to convection induced by the centrifugal force. We solve the compressible Navier–Stokes equations in an inertial frame of reference to study the flow for Rayleigh numbers in the range of 106 to 108. The prediction of heat transfer shows good agreement with experimental data. Visualisations show the formation of counter-rotating convection cells, analogous to Ray..

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