Effect of the surface roughness of blunt cone forebody on the position of laminar-turbulent transition

D. A. Bountin; Yu. V. Gromyko; A. A. Maslov; P. A. Polivanov; A. A. Sidorenko

doi:10.1134/S0869864316050012

Effect of the surface roughness of blunt cone forebody on the position of laminar-turbulent transition

Authors: Bountin D.A.¹, Gromyko Y.V.¹, Maslov A.A.¹, Polivanov P.A.¹, Sidorenko A.A.¹
Affiliations:
1. Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Issue: Vol 23, No 5 (2016)
Pages: 629-638
Section: Article
URL: https://journal-vniispk.ru/1531-8699/article/view/216609
DOI: https://doi.org/10.1134/S0869864316050012
ID: 216609

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Abstract

In the present paper, data on the effect of the surface roughness of blunt cone forebody on the position of laminar-turbulent transition are reported. The study was carried out under freestream Mach 5.95. It was found that the roughness position plays a substantial role in the transition process. Critical Reynolds numbers at which the laminar-turbulent transition occurs on the nose-tip of the model were identified. For the first time, hysteresis in transition position was observed.