High Pressure Shock Wave Attenuation

The experimental progress of laser equation of state (EOS) studies at Shanghai Institute of Laser Plasma (SILP) is discussed in this paper. With a unique focal system, the uniformity of the laser illumination on the target surface is improved and a laser-driven shock wave with good spatial planarity is obtained. With an inclined aluminum target plane, the stability of shock waves are studied, and the corresponding thickness range of the target of laser-driven shock waves propagating steadily are given. The shock adiabats of Cu, Fe, SiO2 are experimentally measured. The pressure in the material is heightened remarkably with the flyer increasing pressure, and the effect of the increasing pressure is observed. Also, the high-pressure shock wave is produced and recorded in the experimentation of indirect laser-driven shock waves with the hohlraum target.

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Shock Wave Attenuation, Interaction, and Reflection

Dynamic Behavior of Materials ◽

10.1002/9780470172278.ch7 ◽

1994 ◽

pp. 179-201 ◽

Cited By ~ 3

Keyword(s):

Shock Wave ◽

Wave Attenuation ◽

Shock Wave Attenuation

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Shock Wave Attenuation by Perforated Plates with Various Hole Sizes

10.21236/ada041854 ◽

1977 ◽

Author(s):

Charles Kingery ◽

Richard Pearson ◽

George Coulter

Keyword(s):

Shock Wave ◽

Wave Attenuation ◽

Perforated Plates ◽

Shock Wave Attenuation

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

Multiscale and Multidisciplinary Modeling Experiments and Design ◽

10.1007/s41939-019-00053-2 ◽

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

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Numerical investigation of shock wave attenuation in channels using water obstacles

Multiscale and Multidisciplinary Modeling Experiments and Design ◽

10.1007/s41939-018-00041-y ◽

2019 ◽

Vol 2 (3) ◽

pp. 159-173 ◽

Cited By ~ 1

Author(s):

Qian Wan ◽

Ralf Deiterding ◽

Veronica Eliasson

Keyword(s):

Shock Wave ◽

Numerical Investigation ◽

Wave Attenuation ◽

Shock Wave Attenuation

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Nonsteady Shock Wave Attenuation Due to Leakage

Energies ◽

10.3390/en11123275 ◽

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.

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