Coupled CFD and FEA calculations to determine acceleration over missile shaped bodies in hypersonic shock tunnel

Senthil Kumar, S and Rakesh, SG and Dhinagaran, R (2017) Coupled CFD and FEA calculations to determine acceleration over missile shaped bodies in hypersonic shock tunnel. In: Advances and Applications in Fluid Mechanics, 20 (3). pp. 375-393.

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Abstract

Accelerometer based force balance system is a common technique used in shock tunnels to measure aerodynamic forces over models. This internally mountable force balance has rubber bushes, which facilitate an unrestrained movement of the model during the short test times of the tunnel. In some particular model-balance systems, when there are high energy flows, we may find the rubber bushes used in those balance systems shearing out. However, the behaviour of these rubber bushes on the predetermined acceleration history is not much familiar. To find out the effect of rubber bushes, a numerical approach is explored. An unsteady analysis of the flow through the shock tunnel and a blunt body has been carried out first. Finite element analysis is then executed to predict the acceleration and this value is analysed with that of the experimental value of acceleration. The prediction of acceleration values for different blunt bodies can be made with these results with different flow conditions and also for different angles of attack.

Item Type:	Journal Article
Publication:	Advances and Applications in Fluid Mechanics
Publisher:	Pushpa Publishing House
Additional Information:	The copyright for this article belongs to the Pushpa Publishing House.
Keywords:	Accelerometer balance system; Finite element analysis; Hypervelocity ballistic models; Neoprene rubber; Unsteady flow simulation
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	17 Jul 2022 06:36
Last Modified:	17 Jul 2022 06:36
URI:	https://eprints.iisc.ac.in/id/eprint/74516

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