One-dimensional radiation-hydrodynamic simulations of imploding spherical plasma liners with detailed equation-of-state modeling

Davis, J. S.; Hsu, S. C.; Golovkin, I. E.; MacFarlane, J. J.; Cassibry, J. T.
October 2012
Physics of Plasmas;Oct2012, Vol. 19 Issue 10, p102701
Academic Journal
This work extends the one-dimensional radiation-hydrodynamic imploding spherical argon plasma liner simulations of Awe et al. [Phys. Plasmas 18, 072705 (2011)] by using a detailed tabular equation-of-state (EOS) model, whereas Awe et al. used a polytropic EOS model. Results using the tabular EOS model give lower stagnation pressures by a factor of 3.9-8.6 and lower peak ion temperatures compared to the polytropic EOS results. Both local thermodynamic equilibrium (LTE) and non-LTE EOS models were used in this work, giving similar results on stagnation pressure. The lower stagnation pressures using a tabular EOS model are attributed to a reduction in the liner's ability to compress arising from the energy sink introduced by ionization and electron excitation, which are not accounted for in a polytropic EOS model. Variation of the plasma liner species for the same initial liner geometry, mass density, and velocity was also explored using the LTE tabular EOS model, showing that the highest stagnation pressure is achieved with the highest atomic mass species for the constraints imposed.


Related Articles

  • New High Head Leaf Gate Form with Smooth Upstream Face. Brankovic, Jelena Markovic; Drobier, Helmut // TEM Journal;Feb2013, Vol. 2 Issue 1, p3 

    This paper presents new smooth upstream face high head gate form that heavily reduces hydrodynamic forces in conjunction to a total absence of uplift (negative downpull) forces. The research work at the Institute of Hydraulic Engineering investigated techniques to reduce the hydrodynamic load on...

  • Analytic criteria for shock ignition of fusion reactions in a central hot spot. Ribeyre, X.; Tikhonchuk, V. T.; Breil, J.; Lafon, M.; Le Bel, E. // Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p102702 

    Shock ignition is an inertial confinement fusion scheme where the ignition conditions are achieved in two steps. First, the DT shell is compressed at a low implosion velocity creating a central core at a low temperature and a high density. Then, a strong spherical converging shock is launched...

  • Frictional contact problem with wear for electro-viscoelastic materials with long memory. Selmani, Mohamed // Bulletin of the Belgian Mathematical Society - Simon Stevin;2013, Vol. 20 Issue 3, p461 

    We study a mathematical model for a quasistatic process of contact with normal compliance and friction when the wear of the contact surface due to friction is taken into account. The material is electro-viscoelastic with long memory. We establish a variational formulation for the model and prove...

  • [N]pT Monte Carlo simulations of the cluster-crystal-forming penetrable sphere model. Zhang, Kai; Charbonneau, Patrick // Journal of Chemical Physics;6/7/2012, Vol. 136 Issue 21, p214106 

    Certain models with purely repulsive pair interactions can form cluster crystals with multiply-occupied lattice sites. Simulating these models' equilibrium properties is, however, quite challenging. Here, we develop an expanded isothermal-isobaric [N]pT ensemble that surmounts this problem by...

  • The equation of state of flexible chains of tangent hard spheres at high-density region from simulation and thermodynamic perturbation theory. Alavi, Farzad; Feyzi, Farzaneh // Journal of Chemical Physics;1/14/2013, Vol. 138 Issue 2, p024903 

    Radial and triplet correlation functions of the reference hard sphere system are determined at several solid densities by canonical Monte Carlo (MC) simulations. These customized data are used to extend the second order thermodynamic perturbation theory (TPT) to the solid phase of flexible hard...

  • Solute Transport in Open-Channel Networks in Unsteady Flow Regime. Yi Zhang; Aral, Mustafa M. // Environmental Fluid Mechanics;Sep2004, Vol. 4 Issue 3, p225 

    In this paper we propose a robust algorithm to evaluate solute transport in open-channel networks with transient storage under an unsteady flow regime. In the proposed approach, through the integration of junction equations into the model and solving them explicitly, the analysis of solute...

  • STUDYING THE INFLUENCE OF RIVER WORKS USING 1D HYDRODINAMIC MODELLING TOOL. GHITESCU, Marie - Alice; CONSTANTIN, Albert - Titus; GIRBACIU, Alina Irina // Proceedings of the International Multidisciplinary Scientific Ge;2016, Vol. 1, p691 

    The present work presents a comparative study flow modelling in the natural riverbed and regularized. Hydrodynamic model was developed in one-dimensional program HEC -RAS for a section of the river Baraolt, Covasna County. The river reach analysed had a length L=2,15km, and 20 cross section. For...

  • The role of particle-particle interactions in bubbling gas-fluidized beds of Geldart A particles: A discrete particle study. Wang, J. W.; van der Hoef, M. A.; Kuipers, J. A. M. // AIP Conference Proceedings;3/1/2010, Vol. 1207 Issue 1, p766 

    Discrete particle simulations are by now well established as an effective tool to study the mechanics of complex gas-solid flows in gas-fluidized beds. In this study, a state-of-the-art discrete particle model is used to explore the role of particle-particle interactions in bubbling...

  • Mathematical simulation of evolution of solitary spherical gas bubble based on homobaric model. Desyatov, A.; Il'mov, D.; Kubyshkin, A.; Cherkasov, S. // High Temperature;Jun2011, Vol. 49 Issue 3, p422 

    Thermophysical and hydrodynamic processes in a spherical vapor bubble and the surrounding fluid are studied at an increase in the external pressure using the method of numerical simulation. The study was carried out based on a mathematical model belonging to the class of homobaric bubble models...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics