Preliminary Visualization Study on the Flat-Plate Boundary Layer with Continuous Freestream Turbulence

2013 ◽  
Author(s):  
Xiaohua Wu ◽  
Parviz Moin
Keyword(s):  
Boundary Layer ◽  
Flat Plate ◽  
Plate Boundary ◽  
Freestream Turbulence ◽  
Flat Plate Boundary Layer

scholarly journals Modeling of Laminar-Turbulent Transition in Boundary Layers and Rough Turbine Blades

2017 ◽  
Vol 139 (11) ◽  
Author(s):  
Liang Wei ◽  
Xuan Ge ◽  
Jacob George ◽  
Paul Durbin
Keyword(s):  
Boundary Layer ◽  
Flat Plate ◽  
Skin Friction ◽  
Current Model ◽  
Turbine Blades ◽  
Great Influence ◽  
Plate Boundary ◽  
Freestream Turbulence ◽  
Roughness Effects ◽  
Flat Plate Boundary Layer

A local, intermittency-function-based transition model was developed for the prediction of laminar-turbulent transitional flows with freestream turbulence intensity Tu at low (Tu < 1%), moderate (1% < Tu < 3%), and high Tu > 3% levels, and roughness effects in a broad range of industrial applications such as turbine and helicopter rotor blades, and in nature. There are many mechanisms (natural or bypass) that lead to transition. Surface roughness due to harsh working conditions could have great influence on transition. Accurately predicting both the onset location and length of transition has been persistently difficult. The current model is coupled with the k–ω Reynolds-averaged Navier–Stokes (RANS) model, that can be used for general computational fluid dynamics (CFD) purpose. It was validated on the ERCOFTAC experimental zero-pressure-gradient smooth flat plate boundary layer with both low and high leading-edge freestream turbulence intensities. Skin friction profiles agree well with the experimental data. The model was then tested on ERCOFTAC experimental flat plate boundary layer with favorable/adverse pressure gradients cases, periodic wakes, and flows over Stripf's turbine blades with roughness from hydraulically smooth to fully rough. The predicted skin friction and heat transfer properties by the current model agree well with the published experimental and numerical data.

Freestream turbulence effect on flow and heat transfer in the flat-plate boundary layer

2012 ◽  
Vol 47 (5) ◽  
pp. 590-592
Author(s):  
G. L. Lioznov ◽  
V. G. Lushchik ◽  
M. S. Makarova ◽  
A. E. Yakubenko
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Flat Plate ◽  
Plate Boundary ◽  
Freestream Turbulence ◽  
Flow And Heat Transfer ◽  
Turbulence Effect ◽  
Flat Plate Boundary Layer

Interaction of intersecting shocks with a flat-plate boundary layer in the presence of an entropy layer

2013 ◽  
Vol 48 (5) ◽  
pp. 636-647 ◽  
Author(s):  
V. Ya. Borovoy ◽  
I. V. Egorov ◽  
V. E. Mosharov ◽  
V. N. Radchenko ◽  
A. S. Skuratov ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Flat Plate ◽  
Plate Boundary ◽  
Entropy Layer ◽  
Flat Plate Boundary Layer

scholarly journals A Theory for Wake-Induced Transition

1989 ◽  
Author(s):  
R. E. Mayle ◽  
K. Dullenkopf
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Turbulent Flow ◽  
Flat Plate ◽  
Free Stream ◽  
Plate Boundary ◽  
Transition Model ◽  
Model Comparisons ◽  
Turbulent Wakes ◽  
Flat Plate Boundary Layer

A theory for transition from laminar to turbulent flow as the result of unsteady, periodic passing of turbulent wakes in the free stream is developed using Emmons’ transition model. Comparisons made to flat plate boundary layer measurements and airfoil heat transfer measurements confirm the theory.

VORTEX METHOD SIMULATION OF BLASIUS' FLAT-PLATE BOUNDARY LAYER

2014 ◽  
Vol 6 (6) ◽  
pp. 535-539
Author(s):  
Helaine C. Santos ◽  
Victor S. Santiago ◽  
Gustavo C. R. Bodstein
Keyword(s):  
Boundary Layer ◽  
Flat Plate ◽  
Plate Boundary ◽  
Vortex Method ◽  
Flat Plate Boundary Layer
Sign in / Sign up

Export Citation Format

Share Document