scholarly journals Experimental studies of laminar-turbulent transition on a body of revolution

2017 ◽  
Vol 894 ◽  
pp. 012031 ◽  
Author(s):  
A V Dovgal ◽  
B Yu Zanin ◽  
A M Sorokin
Keyword(s):  
Experimental Studies ◽  
Body Of Revolution ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition

scholarly journals Experimental Study of the Influence of Unit Reynolds Number on the Laminar-Turbulent Transition on the Model Swept Wing with a Subsonic Leading Edge at M = 2

2021 ◽  
Vol 16 (1) ◽  
pp. 44-52
Author(s):  
Vasilii L. Kocharin ◽  
Nikolai V. Semionov ◽  
Alexander D. Kosinov ◽  
Aleksey A. Yatskikh ◽  
Sofia A. Shipul ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Reynolds Number ◽  
Experimental Studies ◽  
Leading Edge ◽  
Supersonic Boundary Layer ◽  
Swept Wing ◽  
Unit Reynolds Number ◽  
Flow Parameters ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition

Experimental studies of the influence of unit Reynolds number on the laminar-turbulent transition in a supersonic boundary layer of a swept wing with a subsonic leading edge at Mach number 2 are performed. The experiments were performed on a model of a swept wing with a swept angle of the leading edge of 72 degrees and with a 3% profile with a variable chord length in span. The hot-wire measurements showed that a laminar-turbulent transition in a supersonic boundary layer of a swept wing with a subsonic leading edge occurs earlier (~25-30%) than on a model with a supersonic leading edge with the same oncoming flow parameters. It is shown that a change unit Reynolds number insignificant influence the laminar-turbulent transition in the boundary layer of a swept wing with a subsonic leading edge.

scholarly journals Laminar–turbulent transition reversal on blunt ogive body of revolution at hypersonic speeds

2018 ◽  
Vol 234 (1) ◽  
pp. 102-108
Author(s):  
A Vaganov ◽  
A Noev ◽  
V Radchenko ◽  
A Skuratov ◽  
A Shustov
Keyword(s):  
Transfer Rate ◽  
Body Of Revolution ◽  
Nose Radius ◽  
Conical Body ◽  
Unit Reynolds Number ◽  
Flow Parameters ◽  
Turbulent Transition ◽  
Half Angle ◽  
Hypersonic Speeds ◽  
Laminar Turbulent Transition

The influence of flow parameters and nose radius on the location of laminar–turbulent transition is investigated. The model is an ogive-conical body of revolution having half angle about 9°. Experiments were conducted in a shock tunnel at Mach number 5. The transition location was diagnosed by the heat transfer rate distribution determined with the aid of luminescent temperature converters. It is shown that transition reversal can occur either (a) in the absence of turbulent wedges or (b) at a constant level of freestream disturbances. Both increasing and decreasing branches of Re∞,t (Re∞,R) dependency were observed at constant nose radius while varying only the unit Reynolds number.

ESTIMATION OF THE EFFECT OF FREE-STREAM TURBULENCE AND SOLID PARTICLES ON THE LAMINAR-TURBULENT TRANSITION AT HYPERSONIC SPEEDS

2016 ◽  
Vol 47 (1) ◽  
pp. 15-28 ◽  
Author(s):  
Mikhail Aleksandrovich Pugach ◽  
Alexander Aleksandrovich Ryzhov ◽  
Alexander Vitalievich Fedorov
Keyword(s):  
Free Stream ◽  
Solid Particles ◽  
Free Stream Turbulence ◽  
Turbulent Transition ◽  
Hypersonic Speeds ◽  
Laminar Turbulent Transition

INFLUENCE OF THE PLATE LEADING-EDGE SHAPE AND THICKNESS ON THE BOUNDARY LAYER LAMINAR-TURBULENT TRANSITION IN HYPERSONIC FLOW

2019 ◽  
Vol 50 (5) ◽  
pp. 461-481
Author(s):  
Sergei Vasilyevich Aleksandrov ◽  
Evgeniya Andreevna Aleksandrova ◽  
Volf Ya. Borovoy ◽  
Andrey Vyacheslavovich Gubernatenko ◽  
Vladimir Evguenyevich Mosharov ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Hypersonic Flow ◽  
Leading Edge ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition

LAMINAR-TURBULENT TRANSITION ON THE LV6 LAMINARIZED AIRFOIL. PART II: EFFECT OF FREE STREAM DISTURBANCES

2011 ◽  
Vol 42 (6) ◽  
pp. 729-756
Author(s):  
Vadim Anatol'evich Vlasov ◽  
Sergey Vadimovich Zhigulev ◽  
Aleksandr Igorevich Ivanov ◽  
Andrey Filippovich Kiselev ◽  
Vladimir Aleksandrovich Kuzminsky ◽  
...  
Keyword(s):  
Free Stream ◽  
Turbulent Transition ◽  
Laminar Turbulent Transition
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