Kinetic Alfvén Wave Research Plan (simulations)
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Quataert and Cowley provide analytic direction and leadership in this
area. Dorland is supervising Kate Despain (a Maryland graduate
student in physics) in the required development of GS2.
Morales will link results to PIC simulations currently underway at
UCLA. Stone and Hammett will develop and test collisionless fluid
damping models for ZEUS.
Research Plan
- Year 1: Simulations of Alfvén wave collisions in LAPD using
GS2. Model antenna configuration and boundary conditions.
Begin experimental comparisons. Compare output of GS2
calculations of damping and nonlinear interaction with collisionless
fluid models implemented in ZEUS
- Year 2: Cascade simulations with LAPD parameters using
GS2 and ZEUS. Investigate
spectra, isotropy, damping and heating. Study scaling with stirring
amplitude and plasma parameters. Continue experimental
comparisons.
- Year 3: Perform high-beta astrophysical cascade
calculations. Investigate coupling to the whistler cascade.
Investigate coupling to slow-wave cascade.
- Year 4: Develop an algorithm to use small scales of larger-scale
simulations to drive large scales of smaller-scale simulations.
Thereby construct a long cascade with this crude multiscale
approach. Use to study cascade from large, collisional scales
through collisionless scales.
- Year 5: Multiscale investigation of slow plasma heating by the
cascade and feedback on the cascade.
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