Numerical study on unsteady supersonic cavity flows

1996 ◽  
Author(s):  
Yoko Takakura ◽  
Fumio Higashino ◽  
Takeshi Yoshizawa ◽  
Satoru Ogawa
Keyword(s):  
Numerical Study ◽  
Cavity Flows ◽  
Supersonic Cavity

Numerical study on supersonic internal cavity flows - What causes the pressure fluctuations?

1999 ◽  
Author(s):  
Yoko Takakura ◽  
Takayoshi Suzuki ◽  
Fumio Higashino ◽  
Masahiro Yoshida
Keyword(s):  
Numerical Study ◽  
Pressure Fluctuations ◽  
Internal Cavity ◽  
Cavity Flows

Supersonic Cavity Flows and Their Control

AIAA Journal ◽  
2006 ◽  
Vol 44 (9) ◽  
pp. 2118-2128 ◽  
Author(s):  
N. Zhuang ◽  
F. S. Alvi ◽  
M. B. Alkislar ◽  
C. Shih
Keyword(s):  
Cavity Flows ◽  
Supersonic Cavity

scholarly journals Effects of Three Types of Control Devices on Closed-Type Supersonic Cavity Flows

2003 ◽  
Vol 46 (152) ◽  
pp. 113-120
Author(s):  
Jianbo Zhang ◽  
Etsuo Morishita ◽  
Takeo Okunuki ◽  
Hiroshi Itoh
Keyword(s):  
Cavity Flows ◽  
Closed Type ◽  
Control Devices ◽  
Supersonic Cavity

Supersonic cavity flows over concave and convex walls

2016 ◽  
Vol 25 (2) ◽  
pp. 145-152
Author(s):  
A. Ran Ye ◽  
Rajarshi Das ◽  
Toshiaki Setoguchi ◽  
Heuy Dong Kim
Keyword(s):  
Cavity Flows ◽  
Supersonic Cavity

Parallel computations of unsteady supersonic cavity flows

1996 ◽  
pp. 59-66 ◽  
Author(s):  
Yoko Takakura ◽  
Fumio Higashino ◽  
Takeshi Yoshizawa ◽  
Masahiro Yoshida ◽  
Satoru Ogawa
Keyword(s):  
Parallel Computations ◽  
Cavity Flows ◽  
Supersonic Cavity

Comparative Numerical Study of Supersonic Cavity Flow

2022 ◽  
Author(s):  
Donald P. Rizzetta ◽  
Daniel J. Garmann ◽  
Scott Sherer ◽  
Miguel R. Visbal
Keyword(s):  
Numerical Study ◽  
Cavity Flow ◽  
Supersonic Cavity

scholarly journals Experimental and Numerical Study of Flow Structures Associated With Low Aspect Ratio Elliptical Cavities

2013 ◽  
Vol 135 (4) ◽  
Author(s):  
Taravat Khadivi ◽  
Eric Savory
Keyword(s):  
Aspect Ratio ◽  
Particle Image ◽  
Numerical Study ◽  
Three Dimensional ◽  
Reynolds Stress Model ◽  
Cavity Flows ◽  
Low Aspect Ratio ◽  
Image Velocimetry ◽  
Computational Fluid Dynamics Simulations ◽  
Dynamics Simulations

The flow regimes associated with 2:1 aspect ratio elliptical planform cavities of varying depth immersed in a turbulent boundary layer at a Reynolds number of 8.7 × 104, based on the minor axis of the cavity, have been quantified from particle image velocimetry measurements and three-dimensional steady computational fluid dynamics simulations (Reynolds stress model closure). Although these elliptical cavity flows have some similarities with nominally two-dimensional and rectangular cases, three-dimensional effects due to the low aspect ratio and curvature of the walls give rise to features exclusive to low aspect ratio elliptical cavities, including formation of cellular structures at intermediate depths and vortex structures within and downstream of the cavity.

A Numerical and Experimental Study of Laminar Unsteady Lid-Driven Cavity Flows

2017 ◽  
Author(s):  
K. M. Akyuzlu
Keyword(s):  
Experimental Study ◽  
Steady State ◽  
Flow Field ◽  
Numerical Study ◽  
Working Fluid ◽  
Cavity Flows ◽  
Square Cavity ◽  
Measured Velocity ◽  
Driven Cavity ◽  
Numerical Predictions

An experimental and numerical study was conducted to study unsteady lid-driven cavity flows. More specifically, the development of the circulation patterns inside a square cavity due to the movement of a rigid impermeable lid at constant velocity was observed experimentally and predicted numerically by CFD codes. Particle Image Velocimeter (PIV) technique was used to determine the flow field as it develops from stagnation to steady state inside a one inch (25.4 mm) square cavity driven by an impermeable lid. To avoid the three dimensional effects on the primary vortex, the depth of the cavity is taken to be 5 inches (127 mm). Working fluid is water and it is seeded with hallow glass spheres with 10 microns diameter. Experimental study was conducted for different lid velocities corresponding to Reynolds numbers for laminar to intermittent turbulence. The numerical study was carried out using commercial and in-house CFD codes for the steady state case, and using a commercial CFD code for the unsteady case. The predictions of unsteady flow field inside the two-dimensional square cavity were made using these codes which employ second order accurate (temporally and spatially) implicit numerical schemes. A time and mesh independence study was carried out to determine the optimum mesh size and time increment for the unsteady case study. Comparisons of the numerically predicted and experimentally measured velocity fields are made for steady and unsteady cases. The results indicate that the numerical predictions capture the characteristics of the circulation inside the cavity reasonably well however the magnitude of the velocities are underestimated.

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