scholarly journals Numerical simulations of Z-Pinch experiments to create supersonic differentially-rotating plasma flows

2012 ◽  
Vol 58 ◽  
pp. 167-171
Author(s):  
M. Bocchi ◽  
B. Ummels ◽  
J.P. Chittenden ◽  
S.V. Lebedev
Keyword(s):  
Numerical Simulations ◽  
Plasma Flows ◽  
Z Pinch

scholarly journals NUMERICAL SIMULATIONS OF Z-PINCH EXPERIMENTS TO CREATE SUPERSONIC DIFFERENTIALLY ROTATING PLASMA FLOWS

2013 ◽  
Vol 767 (1) ◽  
pp. 84 ◽  
Author(s):  
M. Bocchi ◽  
B. Ummels ◽  
J. P. Chittenden ◽  
S. V. Lebedev ◽  
A. Frank ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Plasma Flows ◽  
Z Pinch

scholarly journals Numerical simulations of Z-pinch experiments to create supersonic differentially-rotating plasma flows

2013 ◽  
Vol 9 (1) ◽  
pp. 108-111 ◽  
Author(s):  
Matteo Bocchi ◽  
Jerry P. Chittenden ◽  
Sergey V. Lebedev ◽  
Gareth N. Hall ◽  
Matthew Bennett ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Plasma Flows ◽  
Z Pinch

scholarly journals Self-organization observed in numerical simulations of a hard-core diffuse Z pinch

2005 ◽  
Vol 12 (4) ◽  
pp. 042312 ◽  
Author(s):  
V. Makhin ◽  
R. E. Siemon ◽  
B. S. Bauer ◽  
A. Esaulov ◽  
I. R. Lindemuth ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Hard Core ◽  
Self Organization ◽  
Z Pinch

scholarly journals Scaling stellar jets to the laboratory: The power of simulations

2009 ◽  
Vol 27 (4) ◽  
pp. 709-717 ◽  
Author(s):  
C. Stehlé ◽  
A. Ciardi ◽  
J.-P. Colombier ◽  
M. González ◽  
T. Lanz ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Laboratory Experiments ◽  
Scaling Laws ◽  
Laser System ◽  
High Energy ◽  
Laboratory Astrophysics ◽  
High Energy Density ◽  
Radiative Shocks ◽  
Stellar Jets ◽  
Z Pinch

AbstractAdvances in laser and Z-pinch technology, coupled with the development of plasma diagnostics, and the availability of high-performance computers, have recently stimulated the growth of high-energy density laboratory astrophysics. In particular, a number of experiments have been designed to study radiative shocks and jets with the aim of shedding new light on physical processes linked to the ejection and accretion of mass by newly born stars. Although general scaling laws are powerful tools to link laboratory experiments with astrophysical plasmas, the phenomena modeled are often too complicated for simple scaling to remain relevant. Nevertheless, the experiments can still give important insights into the physics of astrophysical systems and can be used to provide the basic experimental validation of numerical simulations in regimes of interest to astrophysics. We will illustrate the possible links between laboratory experiments, numerical simulations, and astrophysics in the context of stellar jets. First we will discuss the propagation of stellar jets in a cross-moving interstellar medium and the scaling to Z-pinch produced jets. Our second example focuses on slab-jets produced at the Prague Asterix Laser System laser installation and their practical applications to astrophysics. Finally, we illustrate the limitations of scaling for radiative shocks, which are found at the head of the most rapid stellar jets.

Hydrodynamic analogy of nonlinear plasma flows

1988 ◽  
Vol 39 (1) ◽  
pp. 27-39 ◽  
Author(s):  
S. V. Bazdenkov ◽  
O. P. Pogutse
Keyword(s):  
Magnetic Field ◽  
Numerical Simulations ◽  
Shallow Water ◽  
Nonlinear Evolution ◽  
Wave Excitation ◽  
Plasma Flows ◽  
Nonlinear Plasma ◽  
Resonant Wave ◽  
Hydrodynamic Analogy ◽  
Rotating Shallow Water

Some new aspects of an analogy between plasma in a magnetic field and a rotating shallow liquid are considered. Effects of gyroscopic screening and resonant wave excitation are studied. The results of numerical simulations of the nonlinear evolution of sheared flows in rotating shallow water are presented.

Simplified CFD based Approach for Estimation of Heat Flux over Wedge Models in High Speed Plasma Flows

2017 ◽  
Vol 67 (5) ◽  
pp. 497
Author(s):  
L. Aravindakshan Pillai ◽  
Praveen Nair
Keyword(s):  
Heat Flux ◽  
Numerical Simulations ◽  
High Speed ◽  
Complex Flow ◽  
Plasma Flows ◽  
Flow Physics ◽  
Blunt Bodies ◽  
Real Gas Effects ◽  
Computational Fluid Dynamics Cfd ◽  
Simplified Procedure

<p>Analysis of plasma flows at hypersonic velocity over blunt bodies is quite complex and challenging as it involves complex flow physics and carries several uncertainties. Simultaneous simulation of all the parameters as existing in re-entry flight puts constraints on most of the ground based experiments. Numerical simulations, on the other hand, require modelling of ionisation and real gas effects and prove to be computationally costly. This paper highlights the development of unstructured, cell centred second order accurate parallel version of in-house computational fluid dynamics (CFD) solver where high temperature equivalent properties used from Hansen’s 7 species model and establishment of a simplified procedure for estimation of heat flux over wedge models tested in Plasma Wind Tunnel facility, Vikram Sarabhai Space Centre. Numerical simulations were carried out for Plasma tunnel initially to get the flow properties inside the tunnel when operated without any model. A simplified CFD based approach is established for computing the heat flux over the bodies tested inside the tunnel and compared with the measured data. The comparison of numerical and measured values shows that the proposed methodology captures the flow physics and various parameters with acceptable levels of accuracy.</p>

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