Numerical simulation of a 30 GHz gyrotron resonator with a 3D high-order discontinuous galerkin approach based particle-in-cell method

2012 ◽  
Author(s):  
A. Stock ◽  
J. Neudorfer ◽  
C.-D Munz ◽  
R. Schneider
Keyword(s):  
Numerical Simulation ◽  
Discontinuous Galerkin ◽  
High Order ◽  
Galerkin Approach ◽  
Particle In Cell ◽  
Cell Method

Three-Dimensional Numerical Simulation of a 30-GHz Gyrotron Resonator With an Explicit High-Order Discontinuous-Galerkin-Based Parallel Particle-In-Cell Method

2012 ◽  
Vol 40 (7) ◽  
pp. 1860-1870 ◽  
Author(s):  
Andreas Stock ◽  
Jonathan Neudorfer ◽  
Marc Riedlinger ◽  
Georg Pirrung ◽  
Gregor Gassner ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Discontinuous Galerkin ◽  
Three Dimensional ◽  
High Order ◽  
Particle In Cell ◽  
Cell Method

Three-Dimensional Gyrotron Simulation Using a High-Order Particle-in-Cell Method

2012 ◽  
pp. 637-649 ◽  
Author(s):  
A. Stock ◽  
J. Neudorfer ◽  
B. Steinbusch ◽  
T. Stindl ◽  
R. Schneider ◽  
...  
Keyword(s):  
Three Dimensional ◽  
High Order ◽  
Particle In Cell ◽  
Cell Method

Application of Positivity-Preserving Discontinuous Galerkin Scheme in Gaseous Detonations

2017 ◽  
Vol 14 (01) ◽  
pp. 1750005 ◽  
Author(s):  
Cheng Wang ◽  
Yong Bi ◽  
Wenhu Han
Keyword(s):  
Numerical Simulation ◽  
Discontinuous Galerkin ◽  
Chemical Reaction ◽  
High Order ◽  
Gaseous Detonation ◽  
Computational Domain ◽  
Positivity Preserving ◽  
2D Euler Equations ◽  
Numerical Computing ◽  
Complicated Geometry

In numerical simulation of gaseous detonation, due to the complexity of the computational domain, negative density and pressure often emerge in high resolution numerical computing, which leads to blow-ups. The paper provides high order discontinuous Galerkin (DG) positivity-preserving scheme for two-dimensional (2D) Euler equations with two-step chemical reaction which preserve positivity of density, pressure and chemical reaction process. A positivity-preserving limiter is added in high order DG scheme without influencing conservation, accuracy and stability. The method is verified by parallel numerical simulations and is approved to be well applied to numerical simulation of gaseous detonation propagation with complicated geometry boundary.

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