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Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki, 2017, Volume 27, Issue 1, Pages 121–128 (Mi vuu573)  

MECHANICS

Detached eddy simulations of the side-loads in an overexpanded nozzle flow

E. A. Luchikhina, L. E. Tonkov

Institute of Mechanics, Ural Branch of the Russian Academy of Sciences, ul. T. Baramzinoi, 34, Izhevsk, 426067, Russia

Abstract: In this paper, we numerically examine the separated flow in an overexpanded nozzle developed during the starting phase of a rocket engine featuring the side-load effect. We use detached eddy simulation (DES), namely, its version referred to as delayed DES, and compare our results with the existing experimental and numerical data. The calculations are based on finite volume approximation of the Navier–Stokes equations for perfect gas and pressure-based formulation with PISO coupling. By investigating the unsteadiness associated with the shock-induced separation, a better insight can be obtained as to how these affect the nozzle start-up. Three-dimensional, transient, turbulent computational fluid dynamics methodology has been demonstrated to capture major side-load physics with supersonic nozzles. The main flow properties (wall pressure levels, shock waves pattern, side load locus) are rather well reproduced. We suggest using a delayed detached eddy simulation for more accurate predictions of the flow separation.

Keywords: mathematical modeling, detached eddy simulations, supersonic nozzle, side-load.

Funding Agency Grant Number
Russian Foundation for Basic Research 14-01-00055_а
14-08-00064_a


DOI: https://doi.org/10.20537/vm170110

Full text: PDF file (1059 kB)
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Bibliographic databases:

UDC: 533.17, 533.697.4
MSC: 76H05, 76F65
Received: 12.12.2016

Citation: E. A. Luchikhina, L. E. Tonkov, “Detached eddy simulations of the side-loads in an overexpanded nozzle flow”, Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki, 27:1 (2017), 121–128

Citation in format AMSBIB
\Bibitem{LucTon17}
\by E.~A.~Luchikhina, L.~E.~Tonkov
\paper Detached eddy simulations of the side-loads in an overexpanded nozzle flow
\jour Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki
\yr 2017
\vol 27
\issue 1
\pages 121--128
\mathnet{http://mi.mathnet.ru/vuu573}
\crossref{https://doi.org/10.20537/vm170110}
\elib{http://elibrary.ru/item.asp?id=28808560}


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  • Вестник Удмуртского университета. Математика. Механика. Компьютерные науки
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