Quasi-one Dimensional Model of Pressure Oscillations in Aft-Finocyl Solid Rocket Motors: a Critical Evaluation of Alternative Closure Sub-Models and Calibrations

2019 ◽  
Author(s):  
Marco Grossi ◽  
Mariasole Laureti ◽  
Bernardo Favini
Keyword(s):  
Critical Evaluation ◽  
Dimensional Model ◽  
Pressure Oscillations ◽  
Solid Rocket Motors ◽  
Rocket Motors ◽  
One Dimensional ◽  
Solid Rocket

Instabilities and pressure oscillations in solid rocket motors

2003 ◽  
Vol 7 (3) ◽  
pp. 191-200 ◽  
Author(s):  
Yves Fabignon ◽  
Jöel Dupays ◽  
Gérard Avalon ◽  
Francois Vuillot ◽  
Nicolas Lupoglazoff ◽  
...  
Keyword(s):  
Pressure Oscillations ◽  
Solid Rocket Motors ◽  
Rocket Motors ◽  
Solid Rocket

Quasi-One-Dimensional Modeling of Internal Ballistics and Axial Acoustics in Solid Rocket Motors

2016 ◽  
Vol 32 (4) ◽  
pp. 882-891
Author(s):  
V. Kalyana Chakravarthy ◽  
Arvind S. Iyer ◽  
Debasis Chakraborty
Keyword(s):  
Solid Rocket Motors ◽  
Rocket Motors ◽  
One Dimensional ◽  
Dimensional Modeling ◽  
Internal Ballistics ◽  
Solid Rocket

Damping of modal perturbations in solid rocket motors

2016 ◽  
Vol 120 (1231) ◽  
pp. 1425-1445 ◽  
Author(s):  
A.S. Iyer ◽  
V.K. Chakravarthy ◽  
S. Saha ◽  
D. Chakraborty
Keyword(s):  
Computational Fluid Dynamic ◽  
Fluid Dynamic ◽  
Sectional Area ◽  
Dynamic Simulations ◽  
Cross Sectional ◽  
Solid Rocket Motors ◽  
Rocket Motors ◽  
One Dimensional ◽  
Solid Rocket ◽  
High Length

ABSTRACTQuasi-one-dimensional (quasi-1D) tools developed for capturing flow and acoustic dynamics in non-segmented solid rocket motors are evaluated using multi-dimensional computational fluid dynamic simulations and used to characterise damping of modal perturbations. For motors with high length-to-diameter ratios (of the order of 10), remarkably accurate estimates of frequencies and damping rates of lower modes can be obtained using the the quasi-1D approximation. Various grain configurations are considered to study the effect of internal geometry on damping rates. Analysis shows that lower cross-sectional area at the nozzle entry plane is found to increase damping rates of all the modes. The flow-turning loss for a mode increases if the more mass addition due to combustion is added at pressure nodes. For the fundamental mode, this loss is, therefore, maximum if burning area is maximum at the centre. The insights from this study in addition to recommendations made by Blomshield(1)based on combustion considerations would be very helpful in realizing rocket motors free from combustion instability.

Pressure Oscillations Numerical Simulation in Solid Rocket Motors

2012 ◽  
Author(s):  
Enrico Cavallini ◽  
Viviana Ferretti ◽  
Bernando Favini ◽  
Maurizio Di Giacinto ◽  
Ferruccio Serraglia
Keyword(s):  
Numerical Simulation ◽  
Pressure Oscillations ◽  
Solid Rocket Motors ◽  
Rocket Motors ◽  
Solid Rocket
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