Experimental and numerical analysis of different flow modifier on the reversal flow region in s-shaped aggressive diffuser

2018 ◽  
Author(s):  
Raed A. Jessam ◽  
Hussain H. Al-Kayiem ◽  
Mohammad S. Nasif
Keyword(s):  
Numerical Analysis ◽  
Flow Region ◽  
Reversal Flow ◽  
Flow Modifier

scholarly journals RANS-based design of experimental flow model for investigation of complex curved turbulent wakes subjected to adverse pressure gradient

2021 ◽  
Vol 2103 (1) ◽  
pp. 012203
Author(s):  
E K Guseva ◽  
D A Nikulin ◽  
A K Travin ◽  
R Radespiel ◽  
P Scholz
Keyword(s):  
Pressure Gradient ◽  
Flat Plate ◽  
Flow Model ◽  
Flow Region ◽  
Adverse Pressure Gradient ◽  
Turbulent Wake ◽  
Wake Flows ◽  
Wide Range ◽  
Reversal Flow ◽  
The One

Abstract Results are presented of a series of RANS computations aimed at creating a new experimental flow model of a curved turbulent wake evolving under adverse pressure gradient. In the course of the computations, key geometric parameters of the model (the angle of attack of a flat plate generating the wake and the shape and the angles of attack of liner foils creating the pressure gradient) were varied in a wide range. The purpose was to find the parameters ensuring desirable features of the flow, namely, a considerable wake curvature and its strong deceleration leading to formation of a large stagnation or even a reversal flow region, on the one hand, and no flow separation either from the flat plate or from the surfaces of the liner foils, on the other hand. As a result, the design satisfying all these demands has been found. This design will be implemented and studied in the framework of recently launched joint German-Russian project “Complex Wake Flows” which presents a continuation of an earlier similar project devoted to symmetric wakes.

Numerical analysis of electro-osmotic flows through elliptic microchannels

2013 ◽  
pp. 42-49 ◽  
Author(s):  
Pamela Vocale ◽  
Michela Geri ◽  
Luca Cattani ◽  
Gian Luca Morini ◽  
Marco Spiga
Keyword(s):  
Numerical Analysis
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