CONVECTIVE AND RADIATIVE HEAT TRANSFER
MODELLING IN THE TURBULENT FLOWS USING ANSYS CFX
I.E. Evdokimov
In the article has been investigated convective
and radiative heat transfer in the turbojet exhaust
nozzle. Numerical results are presented and compared with the experimental
measurements. It is found great discrepancy between experimental and predicted
temperatures in the main duct exhaust nozzle and high convergence in outline
duct exhaust nozzle. The causes of the inaccuracy have been investigated
separately. A WSGG-model (Weighted Sum of Gray Gases) selected for radiative heat transfer modeling provide a good accuracy of
the experimental temperatures in the outline duct nozzle wall, where effect of
the radiation is considerable. The article is useful for specialists and
researchers in the field of turbomachinery and heat
exchange modelling using ANSYS CFX.
Key
words: perspective engine, two-stage combustion fuel, pulse engine,
detonating combustion, resonator.