Numerical simulation of the flow with a pseudo-shock in an axisymmetric expanding duct with a frontal inlet
- Authors: Mazhul I.I.1,2, Gounko Y.P.1
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Affiliations:
- Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
- Novosibirsk State Technical University
- Issue: Vol 25, No 1 (2018)
- Pages: 31-46
- Section: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/217260
- DOI: https://doi.org/10.1134/S0869864318010031
- ID: 217260
Cite item
Abstract
The results of the numerical modeling of a flow with a pseudo-shock in an axisymmetric duct are presented. The duct included a frontal inlet with the initial funnel-shaped compression part and the cylindrical throat part as well as the subsequent expanding diffuser. To create a flow with a pseudo-shock, the duct was throttled with the use of the outlet converging insert. Numerical computations of the axisymmetric flow have been conducted on the basis of the solution of the Reynolds-averaged Navier−Stokes equations and with the use of the k-ω SST turbulence model. As a result of computations, such parameters of the flow were determined as the location of the beginning of the pseudo-shock, the length of its supersonic part, the velocity profiles in different cross sections of the pseudo-shock, the pressure distribution on the duct wall, the total pressure recovery factor, and others. The behavior of these parameters at the freestream Mach number М = 6 was analyzed versus the diffuser opening angle and different degree of the inlet duct throttling.
About the authors
I. I. Mazhul
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS; Novosibirsk State Technical University
Author for correspondence.
Email: mazhul@itam.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk
Yu. P. Gounko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: mazhul@itam.nsc.ru
Russian Federation, Novosibirsk