12 Apr '17, 11am

Meeting Design Challenges with Multiphysics Simulation

The following is an excerpt from COMSOL News 2016, spotlighting NASA’s use of multiphysics simulation in optimizing the acoustics of rocket propulsion systems, entitled “Multiphysics Software Models Mean Flow-Augmented Acoustics in Rocket Systems.” Historic difficulties in modeling and predicting combustion instability have reduced most instances of rocket systems experiencing instability to a costly fix through testing, or to scrapping of the system entirely. During the early development of rocket propulsion technology scientists and engineers were cued to the underlying physics at play through the measurement of vibrating test stands, observation of fluctuating exhaust plumes, and, most notably, the audible tones accompanying instabilities. These observations lead the pioneers of combustion instability research to focus their modeling efforts on the acoustic waves inside...

Full article: http://spectrum.ieee.org/computing/software/minimizing-hu...

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