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PREDICTION OF BUOYANT, TURBULENT FLOW BY A LOW-REYNOLDS-NUMBER < K-EPSILON > MODEL.

Author(s) : CHEN Q., MOSER A., HUBER A.

Summary

A LOW-REYNOLDS-NUMBER < K-EPSILON > MODEL ESTABLISHED ON KINETIC ENERGY-TURBULENCE ENERGY WAS USED FOR THE PREDICTION OF NATURAL CONVECTION FLOW IN CAVITIES WITH RAYLEIGH NUMBERS ON THE ORDER OF 10 BILLIONS. THE BOUSSINESQ APPROXIMATION WAS USED FOR BUOYANCY. THE RESULTS INDICATE THAT THE COMPUTED VELOCITY AND TEMPERATURE PROFILES AND CONVECTIVE HEAT EXCHANGES BY THE MODEL ARE IN RATHER GOOD AGREEMENT WITH THE MEASUREMENTS. THE INFLUENCE OF THE BUOYANCY PRODUCTION IS SMALL ON VELOCITY AND TEMPERATURE PROFILES BUT IS CONSIDERABLY LARGE ON THE KINETIC ENERGY PROFILES. FOR THE INDOOR AIRFLOW COMPUTATION, USE OF THE LOW-REYNOLDS-NUMBER MODEL WITHBUOYANCY PRODUCTION TERMS IS RECOMMENDED.

Details

  • Original title: PREDICTION OF BUOYANT, TURBULENT FLOW BY A LOW-REYNOLDS-NUMBER < K-EPSILON > MODEL.
  • Record ID : 1991-1061
  • Languages: English
  • Publication date: 1990
  • Source: Source: ASHRAE Trans.
    vol. 96; n. 1; 564-573; 11 fig.; 1 tabl.; 25 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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