Effect of inlet conditions on the flow and heat transfer in a flat diffuser


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The effect of the intensity and scale of turbulence generated by a nozzle at the inlet to a flat diffuser on the flow and heat transfer characteristics is considered for a number of values of the diffuser opening angle and Reynolds numbers. Numerical modeling was carried out using a three-parameter differential RANS turbulence model supplemented with a transport equation for a turbulent heat flow. The calculation results are compared with known experimental data.

flow with heat exchange, flat diffuser, RANS-turbulence model.

DOI: http://doi.org/10.33257/PhChGD.24.5.1066


Volume 24, issue 5, 2023 year


Влияние входных условий на течение и теплообмен в плоском диффузоре

Рассмотрено влияние интенсивности и масштаба турбулентности, формируемых соплом на входе в плоский диффузор, на характеристики течения и теплообмена для ряда значений угла раскрытия диффузора и чисел Рейнольдса. Численное моделирование проведено с использованием трехпараметрической дифференциальной RANS-модели турбулентности, дополненной уравнением переноса для турбулентного потока тепла. Проведено сравнение результатов расчета с известными экспериментальными данными.

течение с теплообменом, плоский диффузор, RANS-модель турбулентности.

DOI: http://doi.org/10.33257/PhChGD.24.5.1066


Volume 24, issue 5, 2023 year



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