Abstract
To advance recent research on super low-altitude satellites, it is necessary to investigate atmospheric drag, which is approximately 1000 times stronger in low- than in high-altitude satellites. The Direct Simulation Monte Carlo (DSMC) method is widely used to analyze this. However, the present DSMC method is extremely time consuming and costly due to high air density. In this study, we propose a new particle tracking method to reduce that cost by algebraic calculation using rectangular cell to create calculation cell. As a result, we reduced the cost of molecular movement up to 1/300.
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