Bulletin of the American Physical Society
73rd Annual Gaseous Electronics Virtual Conference
Volume 65, Number 10
Monday–Friday, October 5–9, 2020; Time Zone: Central Daylight Time, USA.
Session DM1: Tutorial II: Plasma Physics Fundamentals IILive
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Chair: Steve Shannon, North Carolina State University |
Monday, October 5, 2020 12:30PM - 2:00PM Live |
DM1.00001: Solving the plasma fluid model in open source frameworks: Two-stream instability as a case study Invited Speaker: Venkattraman Ayyaswamy The plasma fluid model obtained by taking suitable moments of the Boltzmann equation represents an important tool in the study of basic plasma phenomenon. While analytical solutions of the plasma fluid model do exist for certain problems, numerical solutions are required for most problems of interest. This tutorial will focus on the utility of open source computational frameworks for solving the plasma fluid model with specific emphasis on the OpenFOAM C$++$ library for solving partial differential equations using the finite volume method. After a brief introduction to the library, the tutorial will provide a hands-on demonstration of developing a module to solve the plasma fluid model and applying it to the two-stream instability problem. The numerical solutions obtained from the OpenFOAM plasma fluid model will be compared with results obtained from analytical and kinetic methods. The tutorial will conclude with a quick overview of other modules developed in the OpenFOAM framework that are relevant to plasma science and engineering. This tutorial can be expected to provide graduate students and other researchers with the fundamental knowledge to develop their own generic plasma code in existing open source frameworks. [Preview Abstract] |
Monday, October 5, 2020 2:00PM - 2:15PM |
DM1.00002: Break (2:00pm - 2:15pm) |
Monday, October 5, 2020 2:15PM - 3:45PM Live |
DM1.00003: Particle Methods for Revealing Kinetic Plasma Behavior Invited Speaker: Benjamin Yee Particle methods are appealing tools for modeling the behavior of plasmas for several reasons. Their implementation can be extremely simple both in terms of the physical models and the numerical methods. However, despite this simplicity they are capable of reproducing complex plasma dynamics. From a pedagogical perspective, they provide an appreciation for the connection between the microscopic view of a plasma and its characteristic collective effects. The primary downsides of particle methods are their computational cost and the stochastic nature of their output. This talk will review the foundational principles of the particle-in-cell (PIC) method and basic numerical methods required for its implementation. From there, some of the basic constraints for accurate solutions will be presented, followed by a hands-on demonstration of using a PIC code to simulate the two-stream instability. The results from this simulation will then be compared to the analysis of the instability and the fluid results. By the end of this talk, attendees can expect to learn the essential components of PIC codes, important considerations in interpreting their results, and publicly available resources. [Preview Abstract] |
Monday, October 5, 2020 3:45PM - 4:00PM |
DM1.00004: Break (3:45pm - 4:00pm) |
Monday, October 5, 2020 4:00PM - 4:30PM |
DM1.00005: Discussion (4:00pm - 4:30pm) |
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