Numerical simulations are carried out to evaluate the nozzle damping of rocket motors. A subscale cold flow experimental condition where nozzle damping coefficients are evaluated through the pulse decay method is taken as a validation case. The flowfield of the motor is simulated by solving three-dimensional Reynolds-averaged Navier–Stokes equations using commercial computational fluid dynamics software. The trend of the pressure decay in the head end is well captured for different values of port-to-throat area ratios, and a very good match is obtained between the computed and experimental values of the nozzle decay coefficient. Validated methodology is used to evaluate the damping coefficient of a burning solid rocket motor with composite propellant.
Damping Coefficient Prediction of Solid Rocket Motor Nozzle Using Computational Fluid Dynamics
Journal of Propulsion and Power ; 30 , 1 ; 19-23
2013-12-31
5 pages
Article (Journal)
Electronic Resource
English
Damping Coefficient Prediction of Solid Rocket Motor Nozzle Using Computational Fluid Dynamics
Online Contents | 2014
|Nozzle Damping in Solid Rocket Instabilities
AIAA | 1973
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