Spherical shock-wave propagation in three-dimensional granular packings

2011 ◽  
Vol 83 (2) ◽  
Author(s):  
Kun Xue ◽  
Chun-Hua Bai
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Three Dimensional ◽  
Shock Wave Propagation ◽  
Spherical Shock Wave ◽  
Granular Packings ◽  
Spherical Shock

Kinetic measurements of shock wave propagation in a three-dimensional complex (dusty) plasma

2003 ◽  
Vol 67 (3) ◽  
Author(s):  
D. Samsonov ◽  
G. Morfill ◽  
H. Thomas ◽  
T. Hagl ◽  
H. Rothermel ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Dusty Plasma ◽  
Three Dimensional ◽  
Shock Wave Propagation ◽  
Kinetic Measurements

scholarly journals Characterization of shock wave signatures at millimetre wavelengths from Bifrost simulations

2020 ◽  
Vol 379 (2190) ◽  
pp. 20200185 ◽  
Author(s):  
Henrik Eklund ◽  
Sven Wedemeyer ◽  
Ben Snow ◽  
David B. Jess ◽  
Shahin Jafarzadeh ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Brightness Temperature ◽  
Spectral Band ◽  
Three Dimensional ◽  
Strong Shock ◽  
Shock Wave Propagation ◽  
Small Scale ◽  
Solar Chromosphere ◽  
Brightness Temperatures

Observations at millimetre wavelengths provide a valuable tool to study the small-scale dynamics in the solar chromosphere. We evaluate the physical conditions of the atmosphere in the presence of a propagating shock wave and link that to the observable signatures in mm-wavelength radiation, providing valuable insights into the underlying physics of mm-wavelength observations. A realistic numerical simulation from the three-dimensional radiative magnetohydrodynamic code Bifrost is used to interpret changes in the atmosphere caused by shock wave propagation. High-cadence (1 s) time series of brightness temperature ( T b ) maps are calculated with the Advanced Radiative Transfer code at the wavelengths 1.309 mm and 1.204 mm, which represents opposite sides of spectral band 6 of the Atacama Large Millimeter/submillimeter Array (ALMA). An example of shock wave propagation is presented. The brightness temperatures show a strong shock wave signature with large variation in formation height between approximately 0.7 and 1.4 Mm. The results demonstrate that millimetre brightness temperatures efficiently track upwardly propagating shock waves in the middle chromosphere. In addition, we show that the gradient of the brightness temperature between wavelengths within ALMA band 6 can potentially be used as a diagnostics tool in understanding the small-scale dynamics at the sampled layers. This article is part of the Theo Murphy meeting issue ‘High-resolution wave dynamics in the lower solar atmosphere’.

Three-dimensional mesoscopic modelling of shock wave propagation and attenuation in gravel granular filter

2021 ◽  
Vol 394 ◽  
pp. 838-852
Author(s):  
Qi Yuan ◽  
Xiangzhen Kong ◽  
Jinhua Zhang ◽  
Qin Fang ◽  
Jian Hong
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Three Dimensional ◽  
Shock Wave Propagation ◽  
Granular Filter ◽  
Mesoscopic Modelling

scholarly journals A Cartesian grid method for the three-dimensional numerical simulation of shock wave propagation in complex-shape domains with moving boundaries

2019 ◽  
pp. 309-322
Author(s):  
В.В. Елесин ◽  
Д.А. Сидоренко ◽  
П.С. Уткин
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Numerical Algorithm ◽  
Quantitative Estimation ◽  
Three Dimensional ◽  
Grid Method ◽  
Cartesian Grid ◽  
Shock Wave Propagation ◽  
Computational Domain ◽  
Cartesian Grid Method

Статья посвящена разработке и количественной оценке свойств вычислительного алгоритма метода декартовых сеток для трехмерного математического моделирования распространения ударных волн в областях сложной изменяющейся формы. Представлено подробное описание вычислительного алгоритма, ключевым элементом которого является определение численного потока через грани, по которым внутренние, регулярные ячейки расчетной области соседствуют с внешними, пересекаемыми границами тел ячейками. Работоспособность алгоритма продемонстрирована в результате сравнения рассчитанных и экспериментальных данных в задачах о взаимодействии ударной волны с неподвижной сферой и подвижной частицей. This paper is devoted to the development and quantitative estimation of a numerical algorithm based on the Cartesian grid method for the threedimensional mathematical simulation of shock wave propagation in domains of complex varying shapes. A detailed description of the numerical algorithm is presented. Its key element is the specification of numerical fluxes through the edges that are common for the inner regular cells of the computational domain and the outer cells intersected by the boundaries of the bodies. The efficiency of the algorithm is shown by comparing the numerical and experimental data in the problems of interaction of a shock wave with a fixed sphere and a moving particle.

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