Surface pressure and heat transfer measurements in the unsteady separated hypersonic flow field over double cones

Vasudevan, B and Srikanth, SP and Shashidhar, HU and Jagadeesh, G (2005) Surface pressure and heat transfer measurements in the unsteady separated hypersonic flow field over double cones. In: Shock Waves, 1-2 (3). pp. 389-394.

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Abstract

Reliable bench mark experimental database in the separated hypersonic flow regime is necessary to validate high resolution CFD codes. In this paper we report the surface pressure and heat transfer measurements carried out on double cones (first cone semi-apex angle = 15, 25 deg.; second cone semi-apex angle= 35, 68 deg.) at hypersonic speeds that will be useful for CFD code validation studies. The surface pressure measurements are carried out at nominal Mach number of 8.35 in the IISc hypersonic wind tunnel. On the other hand the surface heat transfer measurements are carried out at a nominal Mach number of 5.75 in the IISc hypersonic shock tunnel. The flow separation point on the first cone, flow reattachment on the second cone and the wild fluctuation of the transmitted shock on the second cone surface (25/68 deg. double cone) in the presence of severe adverse pressure gradient are some of the flow features captured in the measurements. The results from the CFD studies indicate good agreement with experiments in the attached flow regime while considerable differences are noticeable in the separated flow regime.

Item Type:	Journal Article
Publication:	Shock Waves
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	08 Mar 2012 09:19
Last Modified:	08 Mar 2012 09:19
URI:	http://eprints.iisc.ac.in/id/eprint/43743

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