Ion Propulsion Simulations Using Parallel Supercomputer
نویسندگان
چکیده
A parallel, three-dimensional electrostatic PIC code is developed for largescale electric propulsion simulations using parallel supercomputers. Two algorithms are implemented in the code, a standard finite-difference (FD) PIC and a newly developed immersed-finite-element (IFE) PIC. The IFE-PIC is designed to handle complex boundary conditions accurately while maintaining the computational speed of the standard PIC code. Domain decomposition is used in both field solve and particle push to divide the computation among processors. Two simulations studies are presented to demonstrate the capability of the code. The first is a high-resolution simulation of multiple ion thruster plume interactions for a realistic spacecraft using a domain enclosing the entire solar array panel. The second is a full particle simulation of ion beam neutralizer interactions using real ion to electron mass ratio. The IFE-PIC and FD-PIC run with similar overall speed and the IFE-PIC achieves a high parallel efficiency of ≥ 90%.
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