Shock wave detection in two-dimensional flow based on the theory of characteristics from CFD data

2011 ◽  
Vol 230 (8) ◽  
pp. 3085-3092 ◽  
Author(s):  
Masashi Kanamori ◽  
Kojiro Suzuki
Keyword(s):  
Shock Wave ◽  
Two Dimensional ◽  
Wave Detection ◽  
Dimensional Flow ◽  
Two Dimensional Flow

Three-dimensional effects in wind tunnel studies of shock wave reflection

2000 ◽  
Vol 407 ◽  
pp. 85-104 ◽  
Author(s):  
B. W. SKEWS
Keyword(s):  
Shock Wave ◽  
Wave Reflection ◽  
Wedge Angle ◽  
Three Dimensional ◽  
Wave System ◽  
Two Dimensional ◽  
Shock Wave Reflection ◽  
Dimensional Flow ◽  
Dimensional Effects ◽  
Two Dimensional Flow

This paper concentrates on establishing the three-dimensional flow geometry associated with studies of shock wave reflection between two symmetrical wedges in supersonic flow. It considers the issue of hysteresis in such flows, and draws a distinction between three different aspects of hysteresis, associated with: ideal two-dimensional flow, flow with noise, and three-dimensional effects. The three-dimensional nature of the flow field is elucidated by the use of oblique shadowgraph photography where the optical axis of the shadowgraph system passes at an oblique angle, of as much as 55°, through the test section. The traces of the wave system reflecting off the tunnel window are identified and are used to assist in identification of wave profiles. The nature of the approach of the peripheral Mach reflections collapsing towards the centre of the flow becomes evident, as does the mechanism of transition from Mach reflection to regular reflection. Distinct evidence of the effects of flow perturbations at the mechanical equilibrium transition point are presented, as are changes in the rate of growth of the Mach stem near this point.It is shown that three-dimensional effects can have a major effect on the wedge angle for transition. In the present tests, at Mach 3.1 and a wedge aspect ratio of 0.5, this occurs at a wedge angle of about 5° higher than the theoretical maximum for the corresponding two-dimensional flow, where the dual solution domain extends over only two degrees.

scholarly journals Simulation of flow field in steam ejector and analysis of shock wave characteristics

2018 ◽  
Vol 198 ◽  
pp. 03001
Author(s):  
Yi Cui
Keyword(s):  
Shock Wave ◽  
Flow Field ◽  
Back Pressure ◽  
Two Dimensional ◽  
Dimensional Flow ◽  
Wave Characteristics ◽  
Steam Ejector ◽  
Two Dimensional Flow ◽  
Fluent Software ◽  
Throat Diameter

Fluent software is used to simulate the two-dimensional flow field in the steam ejector. The generation, development and end of shock in the flow field are analyzed. The influence of the shock wave characteristics on the ejector performance is discussed. The results show that the working back pressure in the steam ejector and the throat diameter of the nozzle all affect the position and intensity of the shock wave. When the shock wave ends prematurely or belatedly , it all affect the performance of the injector.

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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