A Method for Validating Two-Dimensional Flow Configurations in Particle Streak Velocimetry

2000 ◽  
Vol 122 (2) ◽  
pp. 438-439 ◽  
Author(s):  
Y. M. Gbamele´ ◽  
P. Desevaux ◽  
J.-P. Prenel
Keyword(s):  
Density Distribution ◽  
Flow Visualization ◽  
Laser Light ◽  
Two Dimensional ◽  
Visualization Technique ◽  
Power Density Distribution ◽  
Two Dimensional Flow ◽  
Particle Streak Velocimetry ◽  
Qualitative Technique ◽  
Flow Configurations

A polychromatic flow visualization technique for Particle Streak Velocimetry (PSV) is described. The method uses several adjoining laser light sheets of different wavelengths with a homogeneous power density distribution. This method allows us to make sure of the 2-D and 3-D nature of flows and to improve the frames quality processed in PSV. The feasibility study of this qualitative technique is established on a hydrodynamic flow. [S0098-2202(00)02402-0]

A Schwarz-Christoffel Method for Generating Two-Dimensional Flow Grids

1985 ◽  
Vol 107 (3) ◽  
pp. 330-337 ◽  
Author(s):  
K. P. Sridhar ◽  
R. T. Davis
Keyword(s):  
Internal Flow ◽  
Mesh Size ◽  
Simple Expression ◽  
Two Dimensional ◽  
Two Dimensional Flow ◽  
Mesh Spacing ◽  
Flow Configurations ◽  
External Flows ◽  
Christoffel Transformation ◽  
High Degree

A new coordinate generation technique, developed by Davis for external flows, is extended to allow for accurate grid generation for a variety of complex internal flow configurations. The approach is based on numerical integration of the Schwarz-Christoffel transformation for polygonal surfaces. It is shown to be second-order accurate with mesh size due to analytic treatment of boundary singularities. The method is flexible enough to allow for treatment of severe internal geometries, for a high degree of control of mesh spacing, and for generation of either orthogonal or nonorthogonal grids. In addition, this technique directly provides the two-dimensional incompressible potential flow solution for internal flows, as well as a simple expression for calculating the grid metric coefficients. Sample cases include symmetric and asymmetric channel, diffuser, and cascade flows.

The Prediction of Turbulent, Supersonic, Two-Dimensional, Boundary-Layer Flows

1971 ◽  
Vol 22 (3) ◽  
pp. 274-294 ◽  
Author(s):  
S. Sivasegaram ◽  
J. H. Whitelaw
Keyword(s):  
Experimental Data ◽  
Turbulent Energy ◽  
Two Dimensional ◽  
Boundary Layer Flows ◽  
Adiabatic Wall ◽  
Mean Velocity ◽  
Wide Range ◽  
Two Dimensional Flow ◽  
Dimensional Boundary ◽  
Flow Configurations

SummaryThe prediction procedures of Bradshaw and Ferriss and Spalding and Patankar are compared with a wide range of experimental data obtained in turbulent, supersonic, two-dimensional flow. Both procedures are shown to result in satisfactory predictions of mean velocity profiles and wall shear stress in adiabatic-wall situations: in addition, the procedure of Spalding and Patankar is shown to be satisfactory in heat transfer situations. The Bradshaw and Ferriss procedure employs a turbulent energy hypothesis in contrast to the mixing-length assumptions used in the present version of the Spalding and Patankar procedure. The close agreement between the predictions of the two procedures indicates a lack of experimental data obtained in flow configurations with suddenly imposed or relaxed pressure gradients.

Laboratory Study of Two-Dimensional Flow Components of Bridge Flow

Volume 1 ◽  
2004 ◽  
Author(s):  
Alfred D. Parr
Keyword(s):  
Fluid Mechanics ◽  
Flow Visualization ◽  
Laboratory Study ◽  
Two Dimensional ◽  
Dimensional Flow ◽  
Two Dimensional Flow ◽  
Flow Components ◽  
Set Up

This paper describes a laboratory set-up that introduces undergraduate fluid mechanics student to the concept of two-dimensional flow at bridges. The experiment involves mostly flow visualization using dye injection. The students are asked to identify angles of attack through the bridge opening, areas of ineffective flow and location with dominant eddies.

Two-Dimensional Flow of Polymer Solutions Through Porous Media

1999 ◽  
Vol 2 (3) ◽  
pp. 251-262
Author(s):  
P. Gestoso ◽  
A. J. Muller ◽  
A. E. Saez
Keyword(s):  
Porous Media ◽  
Polymer Solutions ◽  
Two Dimensional ◽  
Dimensional Flow ◽  
Two Dimensional Flow

STUDY OF NON-ISOTHERMAL TWO-DIMENSIONAL FLOW OVER A SQUARE CYLINDER IMMERSED IN A CHANNEL

2019 ◽  
Author(s):  
Gabriel Machado dos Santos ◽  
Ítalo Augusto Magalhães de Ávila ◽  
Hélio Ribeiro Neto ◽  
João Marcelo Vedovoto
Keyword(s):  
Two Dimensional ◽  
Square Cylinder ◽  
Dimensional Flow ◽  
Two Dimensional Flow
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