scholarly journals The “2T” ion-electron semi-analytic shock solution for code-comparison with xRAGE: A report for FY16

2016 ◽  
Author(s):  
Jim Michael Ferguson
Keyword(s):  
Code Comparison ◽  
Shock Solution

scholarly journals A high-fidelity realization of the Euclid code comparison N-body simulation with Abacus

2019 ◽  
Vol 485 (3) ◽  
pp. 3370-3377 ◽  
Author(s):  
Lehman H Garrison ◽  
Daniel J Eisenstein ◽  
Philip A Pinto
Keyword(s):  
Power Spectrum ◽  
High Performance ◽  
High Fidelity ◽  
Step Size ◽  
Time Step ◽  
Code Comparison ◽  
Force Accuracy ◽  
Integration Errors ◽  
Better Than ◽  
Good Agreement

Abstract We present a high-fidelity realization of the cosmological N-body simulation from the Schneider et al. code comparison project. The simulation was performed with our AbacusN-body code, which offers high-force accuracy, high performance, and minimal particle integration errors. The simulation consists of 20483 particles in a $500\ h^{-1}\, \mathrm{Mpc}$ box for a particle mass of $1.2\times 10^9\ h^{-1}\, \mathrm{M}_\odot$ with $10\ h^{-1}\, \mathrm{kpc}$ spline softening. Abacus executed 1052 global time-steps to z = 0 in 107 h on one dual-Xeon, dual-GPU node, for a mean rate of 23 million particles per second per step. We find Abacus is in good agreement with Ramses and Pkdgrav3 and less so with Gadget3. We validate our choice of time-step by halving the step size and find sub-percent differences in the power spectrum and 2PCF at nearly all measured scales, with ${\lt }0.3{{\ \rm per\ cent}}$ errors at $k\lt 10\ \mathrm{Mpc}^{-1}\, h$. On large scales, Abacus reproduces linear theory better than 0.01 per cent. Simulation snapshots are available at http://nbody.rc.fas.harvard.edu/public/S2016.

A shock solution for the nonlinear shallow water equations

2010 ◽  
Vol 658 ◽  
pp. 166-187 ◽  
Author(s):  
MATTEO ANTUONO
Keyword(s):  
Shock Wave ◽  
General Solution ◽  
Theoretical Analysis ◽  
Asymptotic Behaviour ◽  
Shallow Water ◽  
Shallow Water Equations ◽  
Boundary Data ◽  
Depth Analysis ◽  
Nonlinear Shallow Water Equations ◽  
Shock Solution

A global shock solution for the nonlinear shallow water equations (NSWEs) is found by assigning proper seaward boundary data that preserve a constant incoming Riemann invariant during the shock wave evolution. The correct shock relations, entropy conditions and asymptotic behaviour near the shoreline are provided along with an in-depth analysis of the main quantities along and behind the bore. The theoretical analysis is then applied to the specific case in which the water at the front of the shock wave is still. A comparison with the Shen & Meyer (J. Fluid Mech., vol. 16, 1963, p. 113) solution reveals that such a solution can be regarded as a specific case of the more general solution proposed here. The results obtained can be regarded as a useful benchmark for numerical solvers based on the NSWEs.

Radiating-Conducting Thick-Transparent Normal Shock Solution

1972 ◽  
Vol 15 (12) ◽  
pp. 2150 ◽  
Author(s):  
Leland A. Carlson
Keyword(s):  
Normal Shock ◽  
Shock Solution

Comparative analysis of VERA depletion benchmark through consistent code-to-code comparison

2019 ◽  
Vol 124 ◽  
pp. 385-398 ◽  
Author(s):  
Jinsu Park ◽  
Azamat Khassenov ◽  
Wonkyeong Kim ◽  
Sooyoung Choi ◽  
Deokjung Lee
Keyword(s):  
Comparative Analysis ◽  
Code Comparison

Study of Potential for In-Vessel Retention Through External Reactor Vessel Flooding: Code Comparison

2017 ◽  
pp. 601-615
Author(s):  
Junying Xu ◽  
Lei Zhang ◽  
Dekui Zhan ◽  
Huiyong Zhang ◽  
Yahelle Laroche ◽  
...  
Keyword(s):  
Reactor Vessel ◽  
Code Comparison

scholarly journals The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project

2019 ◽  
Vol 243 (2) ◽  
pp. 26 ◽  
Author(s):  
Oliver Porth ◽  
Koushik Chatterjee ◽  
Ramesh Narayan ◽  
Charles F. Gammie ◽  
Yosuke Mizuno ◽  
...  
Keyword(s):  
Event Horizon ◽  
Code Comparison ◽  
General Relativistic

scholarly journals Launch of the FarmConners Wind Farm Control benchmark for code comparison

2020 ◽  
Vol 1618 ◽  
pp. 022040
Author(s):  
Tuhfe Göçmen ◽  
Konstanze Kölle ◽  
Søren Juhl Andersen ◽  
Irene Eguinoa ◽  
Thomas Duc ◽  
...  
Keyword(s):  
Wind Farm ◽  
Code Comparison
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