Effects of Cavity Width on Compressible Resonance Dynamics using Time-Resolved Pressure Sensitive Paint and Particle Image Velocimetry

2017 ◽  
Author(s):  
Justin L. Wagner ◽  
Katya M. Casper ◽  
Steven J. Beresh ◽  
Edward P. Demauro ◽  
Russell Spillers ◽  
...  
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Pressure Sensitive Paint ◽  
Time Resolved ◽  
Pressure Sensitive ◽  
Image Velocimetry ◽  
Cavity Width

Algebraic Anisotropic Turbulence Modeling of Compound Angled Film Cooling Validated by Particle Image Velocimetry and Pressure Sensitive Paint Measurements

2013 ◽  
Vol 136 (3) ◽  
Author(s):  
Xueying Li ◽  
Yanmin Qin ◽  
Jing Ren ◽  
Hongde Jiang
Keyword(s):  
Particle Image Velocimetry ◽  
Flow Field ◽  
Film Cooling ◽  
Eddy Viscosity ◽  
Particle Image ◽  
Pressure Sensitive Paint ◽  
Anisotropic Model ◽  
Scalar Flux ◽  
Pressure Sensitive ◽  
Image Velocimetry

The complex structures in the film cooling flow field of gas turbines lead to the anisotropic property of the turbulent eddy viscosity and scalar diffusivity. An algebraic anisotropic turbulence model is developed aiming at a more accurate modeling of the Reynolds stress and turbulent scalar flux. In this study, the algebraic anisotropic model is validated by a series of in-house experiments for cylindrical film cooling with compound angle injection of 0, 45, and 90 deg. Adiabatic film cooling effectiveness and flow field are measured using pressure sensitive paint and particle image velocimetry techniques on film cooling test rig in Tsinghua University. Detailed analyses of computational simulations are performed. The algebraic anisotropic model gives a good prediction of the secondary vortices associated with the jet and the trajectory of the jet, therefore improves the prediction of the scalar field. On one hand, the anisotropic eddy viscosity improves the modeling of Reynolds stress and the predictive flow field. On the other hand, the anisotropic turbulent scalar-flux model includes the role of anisotropic eddy viscosity in modeling of scalar flux and directly improves the turbulent scalar flux prediction.

Effects of Cavity Width on Resonance Dynamics using Planform Time-Resolved Particle Image Velocimetry

2018 ◽  
Author(s):  
Justin L. Wagner ◽  
Steven J. Beresh ◽  
Katya M. Casper ◽  
Edward P. DeMauro ◽  
Kyle P. Lynch ◽  
...  
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Time Resolved ◽  
Image Velocimetry ◽  
Cavity Width

scholarly journals Time-resolved particle image velocimetry measurements of the turbulent Richtmyer–Meshkov instability

2021 ◽  
Vol 917 ◽  
Author(s):  
Everest G. Sewell ◽  
Kevin J. Ferguson ◽  
Vitaliy V. Krivets ◽  
Jeffrey W. Jacobs
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Time Resolved ◽  
Image Velocimetry

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