Computation of unsteady flow past blunt bodies

1991 ◽  
Vol 12 (6) ◽  
pp. 521-529
Author(s):  
Yao De-liang ◽  
Bian Yin-gui
Keyword(s):  
Unsteady Flow ◽  
Flow Past ◽  
Blunt Bodies

Computation of unsteady flow past a cylinder instantaneously set in motion

1977 ◽  
Vol 17 (5) ◽  
pp. 671-677
Author(s):  
V. I. Kravchenko ◽  
Yu. D. Shevelev ◽  
V. V. Shchennikov
Keyword(s):  
Unsteady Flow ◽  
Flow Past ◽  
Flow Past A Cylinder

Flow Unsteadiness and Stability Characteristics of Low-Re Flow Past an Inclined Triangular Cylinder

2017 ◽  
Vol 139 (12) ◽  
Author(s):  
Wei Zhang ◽  
Hui Yang ◽  
Hua-Shu Dou ◽  
Zuchao Zhu
Keyword(s):  
Growth Rate ◽  
Sensitivity Analysis ◽  
Unsteady Flow ◽  
Maximum Velocity ◽  
Flow Patterns ◽  
Wake Flow ◽  
Near Wake ◽  
Flow Unsteadiness ◽  
Flow Past ◽  
Far Wake

The present study investigates the two-dimensional flow past an inclined triangular cylinder at Re = 100. Numerical simulation is performed to explore the effect of cylinder inclination on the aerodynamic quantities, unsteady flow patterns, time-averaged flow characteristics, and flow unsteadiness. We also provide the first global linear stability analysis and sensitivity analysis on the targeted physical problem for the potential application of flow control. The objective of this work is to quantitatively identify the effect of cylinder inclination on the characteristic quantities and unsteady flow patterns, with emphasis on the flow unsteadiness and instability. Numerical results reveal that the flow unsteadiness is generally more pronounced for the base-facing-like cylinders (α → 60 deg) where separation occurs at the front corners. The inclined cylinder reduces the velocity deficiency in the near-wake, and the reduction in far-wake is the most notable for the α = 30 deg cylinder. The transverse distributions of several quantities are shifted toward the negative y-direction, such as the maximum velocity deficiency and maximum/minimum velocity fluctuation. Finally, the global stability and sensitivity analysis show that the spatial structures of perturbed velocities are quite similar for α ≤ 30 deg and the temporal growth rate of perturbation is sensitive to the near-wake flow, while for α ≥ 40 deg there are remarkable transverse expansion and streamwise elongation of the perturbed velocities, and the growth rate is sensitive to the far-wake flow.

Unsteady flow past a flat plate with suction

1975 ◽  
Vol 81 (5) ◽  
pp. 215-219 ◽  
Author(s):  
G. N. Purohit ◽  
M. C. Goyal
Keyword(s):  
Unsteady Flow ◽  
Flat Plate ◽  
Flow Past

Investigation of flow past blunt bodies with allowance for radiation by the large-particle method

1983 ◽  
Vol 17 (4) ◽  
pp. 574-579
Author(s):  
O. M. Belotserkovskii ◽  
Yu. M. Davydov ◽  
V. P. Skotnikov ◽  
V. N. Fomin
Keyword(s):  
Large Particle ◽  
Particle Method ◽  
Flow Past ◽  
Blunt Bodies

Supersonic flow past blunt bodies involving fast nonequilibrium processes

1967 ◽  
Vol 2 (5) ◽  
pp. 57-60 ◽  
Author(s):  
V. P. Stulov ◽  
L. I. Turchak
Keyword(s):  
Supersonic Flow ◽  
Nonequilibrium Processes ◽  
Flow Past ◽  
Blunt Bodies
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