Reynolds-number-effects in flow around a rectangular cylinder with aspect ratio 1:5

2013 ◽  
Vol 39 ◽  
pp. 15-26 ◽  
Author(s):  
Günter Schewe
Keyword(s):  
Reynolds Number ◽  
Aspect Ratio ◽  
Rectangular Cylinder ◽  
Reynolds Number Effects

scholarly journals Aspect-Ratio and Reynolds-Number Effects on Short-Span Cross-Flow Impellers without Casings

2006 ◽  
Vol 49 (4) ◽  
pp. 1197-1205 ◽  
Author(s):  
Jiro FUNAKI ◽  
Nobuyuki KIMATA ◽  
Motohide HISADA ◽  
Katsuya HIRATA
Keyword(s):  
Reynolds Number ◽  
Aspect Ratio ◽  
Cross Flow ◽  
Reynolds Number Effects ◽  
Short Span

Reynolds Number Effects in Cascades and Axial Flow Compressors

1964 ◽  
Vol 86 (3) ◽  
pp. 236-242
Author(s):  
J. H. Horlock ◽  
R. Shaw ◽  
D. Pollard ◽  
A. Lewkowicz
Keyword(s):  
Reynolds Number ◽  
Aspect Ratio ◽  
Guide Vane ◽  
Axial Flow ◽  
Compressor Cascade ◽  
Compressor Blades ◽  
Laminar Separation ◽  
Reynolds Number Effects ◽  
Number Variation ◽  
Flow Compressor

A series of tests on guide vane and compressor cascades is reported. The Reynolds number was varied in the guide vane cascade tests, and the Reynolds number and the cascade aspect ratio were varied in the compressor cascade tests. The substantial laminar separation observed in the compressor cascades at high aspect ratio (and low Reynolds number) was suppressed in the cascade tests at low aspect ratio, 2:1. Effects of Reynolds number variation on the performance of a single stage axial flow compressor are also given, and compared with predictions of performance using the cascade tests. Calculations of laminar separation points agree quite well with the experimental observations. It appears that transition due to laminar boundary layer instability is unlikely to occur on compressor blades, in the normal operating range of Reynolds number.

scholarly journals Aspect-Ratio and Reynolds-Number Effects on Short-Span Cross-Flow Impellers without Casings

2007 ◽  
Vol 73 (736) ◽  
pp. 2514-2523
Author(s):  
Jiro FUNAKI ◽  
Nobuyuki KIMATA ◽  
Motohide HISADA ◽  
Katuya HIRATA
Keyword(s):  
Reynolds Number ◽  
Aspect Ratio ◽  
Cross Flow ◽  
Reynolds Number Effects ◽  
Short Span

scholarly journals The Turbulent Flow over the BARC Rectangular Cylinder: A DNS Study

2021 ◽  
Author(s):  
Alessandro Chiarini ◽  
Maurizio Quadrio
Keyword(s):  
Numerical Simulation ◽  
Reynolds Number ◽  
Direct Numerical Simulation ◽  
Finite Differences ◽  
Turbulence Models ◽  
Fine Tuning ◽  
Rectangular Cylinder ◽  
Budget Equation ◽  
Complete Set ◽  
First Time

AbstractA direct numerical simulation (DNS) of the incompressible flow around a rectangular cylinder with chord-to-thickness ratio 5:1 (also known as the BARC benchmark) is presented. The work replicates the first DNS of this kind recently presented by Cimarelli et al. (J Wind Eng Ind Aerodyn 174:39–495, 2018), and intends to contribute to a solid numerical benchmark, albeit at a relatively low value of the Reynolds number. The study differentiates from previous work by using an in-house finite-differences solver instead of the finite-volumes toolbox OpenFOAM, and by employing finer spatial discretization and longer temporal average. The main features of the flow are described, and quantitative differences with the existing results are highlighted. The complete set of terms appearing in the budget equation for the components of the Reynolds stress tensor is provided for the first time. The different regions of the flow where production, redistribution and dissipation of each component take place are identified, and the anisotropic and inhomogeneous nature of the flow is discussed. Such information is valuable for the verification and fine-tuning of turbulence models in this complex separating and reattaching flow.

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