A series of CFD simulations with gradually increasing timesteps is considered in this paper to improve efficiency in analyzing a 200-mm caliber sounding rocket nozzle. The accuracy of this method is compared to a simulation using a single timestep size for the entire burning duration. The simulations are conducted using two different calculation approaches. The first set used a constant timestep of 0.01 s throughout the burning period of 10 s, whereas in the second set, the timestep started at 10–4 s and increased tenfold up to 0.1 s. The results demonstrated consistent trends in crucial properties, including static pressure, wall total heat flux, and static temperature contour for both methods. Both simulations indicate that the highest heat flux of 3.4 MW/m2 occurs in the nozzle throat area within the first second.
Constant and Variable Timesteps Evaluation of CFD Simulation for a 200-mm Caliber Sounding Rocket Nozzle
Springer Proceedings Phys.
International Seminar on Aerospace Science and Technology ; 2024 ; Bali, Indonesia September 17, 2024 - September 17, 2024
Proceedings of the 10th International Seminar on Aerospace Science and Technology; ISAST 2024; 17 September, Bali, Indonesia ; Kapitel : 52 ; 498-507
15.02.2025
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
timestep size , numerical timestep , rocket nozzle simulation , rocket nozzle CFD , CFD simulation Physics , Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) , Aerospace Technology and Astronautics , Climate, general , Ecology , Astronomy, Astrophysics and Cosmology , Measurement Science and Instrumentation , Physics and Astronomy
Variable-caliber rotatable nozzle and water jet propulsion system
Europäisches Patentamt | 2024
|NTIS | 1965
|NTRS | 1998
|NTIS | 1998
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