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Aerospace Engineering
2D vs 3D Method of Characteristics for Rocket Nozzle Design
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[QUOTE="Astronuc, post: 6398385, member: 15685"] I'm pretty sure one can model a circular cross-section in 2D. 2D assumes azimuthal symmetry, where the central element(s) would be circular wedges and other elements annular sections. About 35 years ago, I used a code from Marshall Space Flight Center, a fully coupled finite-rate chemistry simulation code, RAMP (Reacting And Multiphase Program), which uses Method of Characteristics, with another code, BLIMPJ (Boundary Layer Integral Matrix Program – Jet Version). We were modeling typical nozzles with circular cross-sections. 2D codes were used when there were significant memory (and bit) limitations in both storage and computational systems. As far as I know, the are still used, and have been used with variable and constant specific heat ratio frozen flow simulations. Variations in turbulence models, temperature boundary conditions and thermodynamic properties of the plume have been investigated. I believe the codes can be obtained from NASA Marshall subject to the usual restrictions. [/QUOTE]
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2D vs 3D Method of Characteristics for Rocket Nozzle Design
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