On the laminar-turbulent transition in injection-driven porous chambers

Gazanion, Bertrand; Chedevergne, F.; Casalis, Grégoire

doi:10.1007/s00348-013-1643-y

Cited by 11 publications

(5 citation statements)

References 21 publications

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“…The larger growth rates were shown to correspond to higher acoustic frequencies, and the larger growth rates correspond to higher acoustic oscillation amplitude. The perturbation frequencies with the largest growth rate were found to be concentrated in the range from 100 to 250, which are much larger than that for the steady basic flow [12][13][14][15][16].…”

Section: Resultsmentioning

confidence: 99%

Analysis of the Oscillatory Taylor-Culick Flow Using the Multiple Time Scale Method

Liu¹

2017

AAOAJ

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The pressure oscillations of the solid rocket motor could reduce the performance of rocket motors and damage the payloads. Therefore, it is required to predict the conditions leading to turbulent transition from near-laminar to a turbulent flow in the vicinity of the propellant surface, and it is a problem of hydrodynamic instability. In this work, linear stability theory together with the spectral collocation method has been applied on the biglobal hydrodynamic stability analysis of the oscillatory Taylor-Culick flow. Setting the time scale of the basic flow and the hydrodynamic mode as the slow time and the fast time respectively, the linear stability equations are solved using the multiple time scale method. The biglobal hydrodynamic modes are obtained, and the results show that the maximum growth rate of the hydrodynamic mode and its corresponding frequency vary in one period of the basic flow. Furthermore, the parametric study, including the amplitude and the frequency of acoustic motions, is also carried out. The results show that an increase in the amplitude and the frequency of acoustic motions can both make the flow more unstable.

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Section: Resultsmentioning

confidence: 99%

Analysis of the Oscillatory Taylor-Culick Flow Using the Multiple Time Scale Method

Liu¹

2017

AAOAJ

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“…1b). For large values of L∕R, the coherent structures are very large and are expected to induce the transition to turbulence, as measured in cold-gas setups [26]. The structures are more or less dissipated by the turbulence so that the amplitude of the coherent structures passing throughout the nozzle may become very small.…”

Section: Earlier Work On Pressure Oscillationsmentioning

confidence: 92%

Variable Fuel Grains Burn Velocities to Reduce Solid-Rocket-Motor Pressure Oscillations

Anthoine

Jézéquel

Prévost

et al. 2015

Journal of Propulsion and Power

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Large solid rocket motors are subjected to pressure oscillations for which the origin lies in the coupling between hydrodynamic instabilities and the first longitudinal acoustic modes of the combustion chamber. Static firing tests using two propellant grains in the combustion chamber have been performed. The pressure oscillation amplitude can be strongly modified by varying the burn velocity ratio between the two solid fuel grains. The pressure oscillations are significantly reduced when increasing the burn velocity of the upstream grain and are higher in the opposite case.

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“…The main orginality of this work is the consideration of PVS vortices in the transition process, in order to simulate a relevant transition applicable to the pressureoscillations study. As a consequence the simulation domain is the entire channel of an ONERA cold-gas experiment (VALDO) in which both PVS modes and transition have been measured 7 . The simulation parameters, and especially the injected perturbation, are chosen to be consistent with the experiment.…”

Section: Introductionmentioning

confidence: 99%

Large Eddy Simulation of the Laminar-Turbulent Transition in the Flow Induced by Wall Injection

2015

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Laminar-turbulent transition of an experimental configuration representative of the flow in Solid Rocket Motors is investigated using Large Eddy Simulation. The specific instability of this flow is reproduced and a turbulent region is recovered, using a spatial perturbation model built upon an analysis of the noise related to injection. The results show the axial natural growth of instabilities until the laminar-turbulent transition occurs near the end of the channel. Comparisons to measurements are made to validate the numerical procedure.

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On the laminar-turbulent transition in injection-driven porous chambers

Cited by 11 publications

References 21 publications

Analysis of the Oscillatory Taylor-Culick Flow Using the Multiple Time Scale Method

Analysis of the Oscillatory Taylor-Culick Flow Using the Multiple Time Scale Method

Variable Fuel Grains Burn Velocities to Reduce Solid-Rocket-Motor Pressure Oscillations

Large Eddy Simulation of the Laminar-Turbulent Transition in the Flow Induced by Wall Injection

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