2024年3月4日 · M3D-C1 Website [ M3D-C1 Overview | M3D-C1 Users Guide(old) | M3D-C1 Users Guide(new-in progress) | Weekly Meeting Minutes | User License Agreement | M3DC1 Publications ] Last modified on 4 Mar 2024. Please email contributions to [email protected] ...

M3D-C1 is a code that solves the extended-magnetohydrodynamic (MHD) equations, which is a model that describes plasma as electrically conducting fluids of ions and electrons. This code is primarily used for calculating the equilibrium, stability, and dynamics of fusion plasmas, but has also been used for a variety of other applications ...

M3D-C1 is a code developed with funding from the US Department of Energy, and is intended for open scientific research. If you intend to run M3D-C1, please complete the following steps: Request access to the code using the form https://pppl.tiny.us/code-release-form.

4 天之前 · Maps input equilibrium to M3D-C1 uniform mesh. Computes equilibrium on uniform mesh. Creates shape, n_e, T_e, and T_i plots to check for good equilibrium match. Adapts mesh to equilibrium. Runs selected calculations

• M3D-C1 • Goals: to understand the large-scale equilibria and stability of fusion plasmas • Part of CEMM SciDAC (DOE) – Steve Jardin (PI), J. Breslau, J. Chen. • Collaboration with ITAPS for meshing software; TOPS for solvers. – Mark Shephard (RPI) . B) Science Lesson . • Extended MHD is a fluid model of plasma.

To obtain accurate solutions efficiently, over a broad range of temporal and spatial scales, M3D-C1 employs advanced numerical methods, such as: high-order, $C^1$, finite elements, an unstructured geometrical mesh, fully-implicit and semi-implicit time integration, physics-based preconditioning, domain-decomposition parallelization, and the use ...

6 天之前 · Specifically, the version of M3D-C1 that was used incorporates a more realistic representation of features like gas valves. It also offers a new approach to creating simulations called non-equidistant meshing, which enables finer resolution where it matters most. The M3D-C1 mesh divides the tokamak into slices. But the gas jets are small ...

M3D-C1 is a 3D nonlinear two-fluid MHD code. For more information refer to the PPPL Theory Department website.

With more advanced finite-element representation and implicit time advance method, M3D-C1 can study the nonlinear problem with larger timestep and save computation time. Explicit particle pushing can be accelerated using modern HPC with GPU, like in PIC codes. In M3D-K, particles are loaded homogeneously in both real and momentum space.

• M3D-C1 is now being used to simulate disruption mitigation by pellet injection in DIII-D • 3D modeling of benchmark case showed significant current spike driven by instabilities • Initial SPI validation shows proper trends with pellet composition • Increased localization of impurity deposition –Poloidal: more MHD and radiation