THERMAL SCIENCE

International Scientific Journal

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Khaled Bensayah

,

El-Ahcene Mahfoudi

NUMERICAL PREDICTION OF COMPRESSIBLE HEAT FLOW WITH COMPLEX WALL TEMPERATURE IN SUPERSONIC ROCKET NOZZLES

ABSTRACT
Wall heat transfer coefficients and static wall pressures are determined over wide ranges of stagnation pressures and stagnation temperatures under large pressure gradients in a cooled convergent-divergent nozzle. The effects of specific heat ratio, turbulent Prandtl number and wall temperature value on the heat transfer and on the position of separation flow are not yet discussed accurately. Computing correct boundary-layer under adverse pressures gradients is of a particular importance to the accurate modeling of separated flow. This numerical investigation is conducted to assess the accuracy of the SST-V turbulence model when computing boundary-layer separation in supersonic nozzle with heat transfer. It is concluded that the wall heat transfer coefficients and the position of separation point are influenced by the variation of many parameters as heat specific ratio, wall temperature, and turbulent Prandtl number.
KEYWORDS
shock waves, compressible flow, turbulence, heat transfer
PAPER SUBMITTED: 2016-06-16
PAPER REVISED: 2016-09-25
PAPER ACCEPTED: 2016-09-28
PUBLISHED ONLINE: 2016-11-06
DOI REFERENCE: https://doi.org/10.2298/TSCI160616270B
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Issue 6, PAGES [3043 - 3056]
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Numerical prediction of compressible heat flow with complex wall temperature in supersonic rocket nozzles

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