The mixing length on different fluid properties for coaxial gas-gas flow in two-dimensional compressible flow

The understanding of a rapid mixing and mixing length of two substances is of great importance for the design of a subsonic combustor of a ramjet engine due to a very short residence time of the reactive flow. To investigate this problem, the complex shape of a combustion chamber is simplified as a...

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Bibliographic Details
Published in:AIP conference proceedings 2024-05, Vol.3086 (1)
Main Authors: Tunkeaw, Jiratrakul, Rojanaratanangkule, Watchapon
Format: Article
Language:English
Subjects:
Combustion chambers
Compressible flow
Density
Gas flow
Ramjet engines
Two dimensional flow
Viscosity ratio
Online Access:Get full text
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Summary:The understanding of a rapid mixing and mixing length of two substances is of great importance for the design of a subsonic combustor of a ramjet engine due to a very short residence time of the reactive flow. To investigate this problem, the complex shape of a combustion chamber is simplified as a two-dimensional coaxial gas-gas flow. The characteristics of a two-species compressible mixing layer is studied using an in-house solver together with a mass fraction model to represent differences in the density and viscosity of each gas. The results show that the mixing length increases with increased density and viscosity ratios.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0204731