NASA Technical Reports Server (NTRS) : Numerical pdf

NASA Technical Reports Server (NTRS) : Numerical

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Description of the Book:

Numerical codes developed for the calculation of three-dimensional nozzle exhaust flow fields associated with hypersonic airbreathing aircraft are described. Both codes employ reference plane grid networks with respect to three coordinate systems. Program CHAR3D is a characteristic code utilizing a new wave preserving network within the reference planes, while program BIGMAC is a finite difference code utilizing conservation variables and a one-sided difference algorithm. Secondary waves are numerically captured by both codes, while the underexpansion shock and plume boundary are treated discretely. The exhaust gas properties consist of hydrogen-air combustion product mixtures in local chemical equilibrium. Nozzle contours are treated by a newly developed geometry package based on dual cubic splines. Results are presented for simple configurations demonstrating two- and three-dimensional multiple wave interactions

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 1/1/1975
• Year: 1975
• Book Topics/Themes: NASA Technical Reports Server (NTRS), EXHAUST FLOW SIMULATION, EXHAUST NOZZLES, NOZZLE FLOW, THREE DIMENSIONAL FLOW, COMPUTER PROGRAMS, HYPERSONIC AIRCRAFT, PREDICTION ANALYSIS TECHNIQUES, Dash, S. M., Delguidice, P. D

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