6533b7d0fe1ef96bd125ad57

RESEARCH PRODUCT

On the numerical scheme employed in gyrotron interaction simulations

O. DumbrajsTrach-minh TranK.a. AvramidesStefano AlbertiA. K. RamStefan Kern

subject

PhysicsScheme (programming language)DiscretizationPhysicsQC1-999Space (mathematics)law.inventionlawGyrotronConvergence (routing)Range (statistics)Statistical physicsddc:620computerEngineering & allied operationscomputer.programming_language

description

We report on the influence of the numerical scheme employed in gyrotron interaction simulations. Results obtained with the Crank-Nicolson scheme are compared with those obtained with the Backward Time – Centred Space (BTCS) fully implicit scheme. We present realistic cases where, for discretisation parameters in the range usually used in gyrotron simulations, the results can be very different. Hence, the numerical scheme used can be responsible for obscuring the underlying physics if its convergence is not tested carefully.

https://dx.doi.org/10.5445/ir/1000040644