Virginia Tech Electrothermal Instability Progress: Section 3.2
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Ares is a Lawrence Livermore National Lab code with the ability to study 2D (r-z) pulsed power fusion platforms. The code solves the magnetohydrodynamic equations along with thermal and electrical diffusion equations by using a staggered grid hydro solve with Arbitrary Lagrangian-Eulerian mesh handling. For the diffusion equations Ares uses fully implicit backward Euler time discretization (1st order). Ares is also capable of using multi-material non-ideal equation of state treatment, and is also capable of using tabulated thermal and electrical conductivities. The simulation is setup with three regions the first being aluminum, the second being Parylene-N, and the third being vacuum. The aluminum is modeled with SESAME 3720 for the EOS and QLMD (quotidian Lee-More Desjarlais) 29373 for the thermal and electrical conductivities. The Paralene-N coating is modeled with SESAME 7771 for the EOS and 1.0e-10 (→ 0) for the thermal and electrical conductivities. The vacuum is modeled with CV → 0 for the EOS and the same conductivities as the Parylene- N coatings. The domain of each simulation is 60 μm and the range varies based on the dielectric coating size but mainly is from $$r_i$$ ε(100,250)μm and $$r_o$$ (450,550)μm. The resolution for the uncoated simulations is 128x256 and 128x384 for the coated simulations.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1592025
- Report Number(s):
- LLNL-TR-801198; 1004575; TRN: US2102517
- Country of Publication:
- United States
- Language:
- English
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