CFD calculation of heat fluxes in turbulent flow for pioneer-venus probes

Hyo Keun Ahn; Keisuke Sawada; Chul Park

CFD calculation of heat fluxes in turbulent flow for pioneer-venus probes

Hyo Keun Ahn, Keisuke Sawada, Chul Park

ENG - Aerospace Engineering

Research output: Contribution to conference › Paper › peer-review

8 Citations (Scopus)

Abstract

The distribution of the turbulent convective heat transfer rate on the surface of the ablating heatshield of the Pioneer-Venus Day Probe is calculated using CFD. The Venusian atmosphere is assumed to consist of CO₂, and the shock layer is assumed to be in chemical nonequilibrium. Eleven chemical species are accounted for. The turbulence energy is calculated using a one-equation model accounting for the finiteness of turbulence energy at wall according the theory of Park. The result shows that the convective heating rate decreases due to the injection at the stagnation point but increases greatly in the downstream region. This is in agreement with the Pioneer-Venus flight data.

Original language	English
Publication status	Published - 1998
Event	36th AIAA Aerospace Sciences Meeting and Exhibit, 1998 - Reno, United States Duration: 1998 Jan 12 → 1998 Jan 15

Other

Other	36th AIAA Aerospace Sciences Meeting and Exhibit, 1998
Country/Territory	United States
City	Reno
Period	98/1/12 → 98/1/15

ASJC Scopus subject areas

Engineering(all)
Space and Planetary Science

Cite this

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title = "CFD calculation of heat fluxes in turbulent flow for pioneer-venus probes",

abstract = "The distribution of the turbulent convective heat transfer rate on the surface of the ablating heatshield of the Pioneer-Venus Day Probe is calculated using CFD. The Venusian atmosphere is assumed to consist of CO2, and the shock layer is assumed to be in chemical nonequilibrium. Eleven chemical species are accounted for. The turbulence energy is calculated using a one-equation model accounting for the finiteness of turbulence energy at wall according the theory of Park. The result shows that the convective heating rate decreases due to the injection at the stagnation point but increases greatly in the downstream region. This is in agreement with the Pioneer-Venus flight data.",

author = "Ahn, {Hyo Keun} and Keisuke Sawada and Chul Park",

year = "1998",

language = "English",

note = "36th AIAA Aerospace Sciences Meeting and Exhibit, 1998 ; Conference date: 12-01-1998 Through 15-01-1998",

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TY - CONF

T1 - CFD calculation of heat fluxes in turbulent flow for pioneer-venus probes

AU - Ahn, Hyo Keun

AU - Sawada, Keisuke

AU - Park, Chul

PY - 1998

Y1 - 1998

N2 - The distribution of the turbulent convective heat transfer rate on the surface of the ablating heatshield of the Pioneer-Venus Day Probe is calculated using CFD. The Venusian atmosphere is assumed to consist of CO2, and the shock layer is assumed to be in chemical nonequilibrium. Eleven chemical species are accounted for. The turbulence energy is calculated using a one-equation model accounting for the finiteness of turbulence energy at wall according the theory of Park. The result shows that the convective heating rate decreases due to the injection at the stagnation point but increases greatly in the downstream region. This is in agreement with the Pioneer-Venus flight data.

AB - The distribution of the turbulent convective heat transfer rate on the surface of the ablating heatshield of the Pioneer-Venus Day Probe is calculated using CFD. The Venusian atmosphere is assumed to consist of CO2, and the shock layer is assumed to be in chemical nonequilibrium. Eleven chemical species are accounted for. The turbulence energy is calculated using a one-equation model accounting for the finiteness of turbulence energy at wall according the theory of Park. The result shows that the convective heating rate decreases due to the injection at the stagnation point but increases greatly in the downstream region. This is in agreement with the Pioneer-Venus flight data.

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M3 - Paper

AN - SCOPUS:84983097967

T2 - 36th AIAA Aerospace Sciences Meeting and Exhibit, 1998

Y2 - 12 January 1998 through 15 January 1998

ER -

CFD calculation of heat fluxes in turbulent flow for pioneer-venus probes

Abstract

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ASJC Scopus subject areas

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