Decay heat removal by buoyancy-induced turbulent natural convection in a vertical parallel-plate channel

D. Y. Sohn, F. B. Cheung, A. Hunsbedt, E. L. Gluekler

Research output: Contribution to journalConference article

Abstract

The process of buoyancy-induced, developing, turbulent flow in a vertical parallel-plate channel is studied numerically to simulate the performance of an innovative reactor-vessel air cooling system under abnormal operating conditions. The channel is subjected to different stratifications of ambient air temperature. The physical model takes account of possible parameters-the ambient temperature variation, pressure losses at the inlet and the outlet, wall-to-wall radiative heat transfer, property variation with temperature-which influence the heat transfer in the channel. A κ-ε turbulence model is utilized in the numerical simulation. An implicit finite difference scheme is employed to solve the governing equations and variable grid sizes are adopted in the computational procedure to facilitate the task of solution.

Original languageEnglish (US)
Pages (from-to)217-224
Number of pages8
JournalAmerican Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
Volume104
Issue numberPT2
StatePublished - Dec 1 1988
EventCollected Papers in Heat Transfer 1988 - Chicago, IL, USA
Duration: Nov 27 1988Dec 2 1988

Fingerprint

Buoyancy
Natural convection
Heat transfer
Air
Cooling systems
Turbulence models
Temperature
Turbulent flow
Computer simulation
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "The process of buoyancy-induced, developing, turbulent flow in a vertical parallel-plate channel is studied numerically to simulate the performance of an innovative reactor-vessel air cooling system under abnormal operating conditions. The channel is subjected to different stratifications of ambient air temperature. The physical model takes account of possible parameters-the ambient temperature variation, pressure losses at the inlet and the outlet, wall-to-wall radiative heat transfer, property variation with temperature-which influence the heat transfer in the channel. A κ-ε turbulence model is utilized in the numerical simulation. An implicit finite difference scheme is employed to solve the governing equations and variable grid sizes are adopted in the computational procedure to facilitate the task of solution.",
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Decay heat removal by buoyancy-induced turbulent natural convection in a vertical parallel-plate channel. / Sohn, D. Y.; Cheung, F. B.; Hunsbedt, A.; Gluekler, E. L.

In: American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD, Vol. 104, No. PT2, 01.12.1988, p. 217-224.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Decay heat removal by buoyancy-induced turbulent natural convection in a vertical parallel-plate channel

AU - Sohn, D. Y.

AU - Cheung, F. B.

AU - Hunsbedt, A.

AU - Gluekler, E. L.

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N2 - The process of buoyancy-induced, developing, turbulent flow in a vertical parallel-plate channel is studied numerically to simulate the performance of an innovative reactor-vessel air cooling system under abnormal operating conditions. The channel is subjected to different stratifications of ambient air temperature. The physical model takes account of possible parameters-the ambient temperature variation, pressure losses at the inlet and the outlet, wall-to-wall radiative heat transfer, property variation with temperature-which influence the heat transfer in the channel. A κ-ε turbulence model is utilized in the numerical simulation. An implicit finite difference scheme is employed to solve the governing equations and variable grid sizes are adopted in the computational procedure to facilitate the task of solution.

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