Influence of temperature factor on the aerodynamic characteristics of a circular cylinder in a supersonic perfect gas flow

1994 ◽  
Vol 29 (3) ◽  
pp. 424-428
Author(s):  
V. A. Bashkin ◽  
I. V. Egorov ◽  
M. V. Egorova
Keyword(s):  
Circular Cylinder ◽  
Gas Flow ◽  
Aerodynamic Characteristics ◽  
Temperature Factor ◽  
Perfect Gas ◽  
Influence Of Temperature

Supersonic viscous perfect gas flow past a circular cylinder

1994 ◽  
Vol 28 (6) ◽  
pp. 833-838 ◽  
Author(s):  
V. A. Bashkin ◽  
I. V. Egorov ◽  
M. V. Egorova
Keyword(s):  
Circular Cylinder ◽  
Gas Flow ◽  
Perfect Gas ◽  
Flow Past

Effect of slip on vortex shedding from a circular cylinder in a gas flow

2021 ◽  
Vol 6 (6) ◽  
Author(s):  
M. A. Gallis ◽  
J. R. Torczynski
Keyword(s):  
Circular Cylinder ◽  
Vortex Shedding ◽  
Gas Flow

Effects of non-monotony of aerodynamic characteristics of a plate in hypersonic rarefied gas flow

Trudy MAI ◽  
2020 ◽  
pp. 9-9
Author(s):  
Van Tien Vuong ◽  
Sergey Gorelov ◽  
Sergey Rusakov
Keyword(s):  
Gas Flow ◽  
Rarefied Gas ◽  
Aerodynamic Characteristics ◽  
Rarefied Gas Flow

LES Analysis of Turbulence Effects on Unsteady Flows Past a Circular Cylinder

2003 ◽  
Author(s):  
Tetsuro Tamura ◽  
Yoshiyuki Ono ◽  
Kohji Hashida
Keyword(s):  
Circular Cylinder ◽  
Shear Layer ◽  
Bluff Body ◽  
Unsteady Flows ◽  
Aerodynamic Characteristics ◽  
Cylinder Wake ◽  
Eddy Simulation ◽  
Inflow Boundary Condition ◽  
Large Eddy ◽  
Turbulence Effects

Recent advancement of LES (Large Eddy Simulation) technique for turbulent wake has made it possible to numerically investigate the turbulence effects on aerodynamic characteristics of a bluff body. Here we carry out LES of wake flows past a circular cylinder in the subcritical Reynolds number regime. For inflow boundary condition, homogeneous turbulence generated statistically is given time-sequentially. We bring into focus the interaction between the oncoming turbulence and the shear layer separated from a circular cylinder. Shear layer instability easily occurs under such a stimulation and details of its behavior are visualized. Turbulence effects on unsteady flows in the cylinder wake are discussed. The resulting aerodynamic characteristics and their physical mechanism are clarified.

The growth of secondary circulation in frictionless flow

1955 ◽  
Vol 51 (4) ◽  
pp. 737-743 ◽  
Author(s):  
W. R. Hawthorne
Keyword(s):  
Wind Speed ◽  
Gas Flow ◽  
Stagnation Pressure ◽  
Secondary Circulation ◽  
Three Dimensions ◽  
Perfect Gas ◽  
Gravitational Effects ◽  
Gas Atmosphere ◽  
Lapse Rates ◽  
Inviscid Compressible Fluid

ABSTRACTThe appearance of a component of vorticity in the direction of flow materially alters the pattern of flow of a fluid in three dimensions. Expressions are obtained for this secondary vorticity in an inviscid compressible fluid flowing under the action of body forces. They are applied to examples such as a liquid under gravity and gas flow behind a curved shock. In compressible gas flow with varying temperature but constant stagnation pressure no secondary circulation appears. In a perfect gas atmosphere it is shown that secondary circulation may appear because of nou-adiabatic lapse rates as well as wind-speed gradients. It is also shown that in a liquid with a density gradient, gravitational effects can give rise to secondary vorticity components.

Momentum and Heat Transfer in Laminar Flow of Gas With Liquid-Droplet Suspension Over a Circular Cylinder

1967 ◽  
Vol 89 (2) ◽  
pp. 185-193 ◽  
Author(s):  
M. E. Goldstein ◽  
Wen-Jei Yang ◽  
J. A. Clark
Keyword(s):  
Heat Transfer ◽  
Circular Cylinder ◽  
Skin Friction ◽  
Gas Flow ◽  
Flow Problem ◽  
Liquid Droplet ◽  
Two Phase ◽  
Momentum And Heat Transfer ◽  
Layer Flow ◽  
Gas Liquid Flow

An analysis has been made to determine the heat transfer and friction characteristics in a two-phase (gas-liquid) flow over a circular cylinder. It is demonstrated that the resulting two-layer flow problem can be formulated exactly within the framework of laminar boundary layer theory. Two cases are studied; (1) For the parameter E greater or equal to 0.1 and the drop trajectories straight and, (2) For E less or equal to 0.1 and for any drop trajectory. Solutions obtained in power series include the local liquid-film thickness, velocity and temperature profiles, skin friction and Nusselt number. Numerical results disclose a significant increase in both heat transfer rate and skin friction over those of a pure gas flow. The theoretical prediction compares favorably with experimental results of Acrivos, et al. [1].

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