Shock Wave Attenuation by Perforated Plates with Various Hole Sizes

1977 ◽  
Author(s):  
Charles Kingery ◽  
Richard Pearson ◽  
George Coulter
Keyword(s):  
Shock Wave ◽  
Wave Attenuation ◽  
Perforated Plates ◽  
Shock Wave Attenuation

Shock wave attenuation using rigid obstacles with large- and small-scale geometrical features

2019 ◽  
Vol 2 (4) ◽  
pp. 269-279
Author(s):  
Alexander Ivanov ◽  
Nicolas Fassardi ◽  
Christina Scafidi ◽  
Tal Shemen ◽  
Veronica Eliasson
Keyword(s):  
Shock Wave ◽  
Wave Attenuation ◽  
Small Scale ◽  
Shock Wave Attenuation ◽  
Geometrical Features

scholarly journals Nonsteady Shock Wave Attenuation Due to Leakage

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3275
Author(s):  
Chenyuan Liu ◽  
Huoxing Liu
Keyword(s):  
Shock Wave ◽  
Boundary Value Problem ◽  
Wave Attenuation ◽  
Initial Boundary ◽  
Initial Boundary Value Problem ◽  
Leakage Flow ◽  
Shock Wave Attenuation ◽  
Wave Rotors ◽  
Loss Prediction ◽  
Initial Boundary Value

Leakage flow between the rotor and the stator can cause serious performance degradation of wave rotors which utilize nonsteady shock waves to directly transfer energy from burned gases to precompressed air. To solve this problem, primary flow features relevant to leakage are extracted and it was found that the leakage-attributed performance degradation could be abstracted to a special initial-boundary value problem of one-dimensional Euler equations. Then, a general loss assessment method is proposed to solve the problem of nonsteady flow loss prediction. Using the above method, a reasonable physical hypothesis of the initial-boundary value problem depicting the nonsteady leakage flow process is proposed and further, a closed-form leakage loss analytical model combined with an empirical correction method for the discharge coefficient is established. Finally, with the experimentally verified CFD method, comprehensive numerical verification is conducted for the loss prediction model; it is proved that the physical hypothesis of the proposed model in this paper is reasonable and the model is capable of predicting nonsteady shock wave attenuation due to leakage exactly within the range of parameter variations of wave rotors.

Influences of obstacle geometries on shock wave attenuation

Shock Waves ◽  
2014 ◽  
Vol 24 (6) ◽  
pp. 573-582 ◽  
Author(s):  
S. Sha ◽  
Z. Chen ◽  
X. Jiang
Keyword(s):  
Shock Wave ◽  
Wave Attenuation ◽  
Shock Wave Attenuation

Measurement and computation of shock wave attenuation in a rough pipe

1990 ◽  
Vol 26 (3) ◽  
pp. 335-338 ◽  
Author(s):  
B. E. Gel'fand ◽  
S. M. Frolov ◽  
S. P. Medvedev
Keyword(s):  
Shock Wave ◽  
Wave Attenuation ◽  
Shock Wave Attenuation
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