Finite Solid Acoustic Filters

Acoustic-Mean Flow Interaction in Solid Propellant Rocket Motors

There are several sources for pressure oscillations in solid propellant rocket motors. Oscillatory flow field is one of them. Free shear layers in motor flow field cause vortex shedding. End edges of propellant grains and baffle edge in two-segmented motors are samples of such zones. These vortices move from their forming points and strike the field walls. The kinetic energy of vortices change ...

Acoustic-Mean Flow Interaction in Solid Propellant Rocket Motors

There are several sources for pressure oscillations in solid propellant rocket motors. Oscillatory flow field is one of them. Free shear layers in motor flow field cause vortex shedding. End edges of propellant grains and baffle edge in two-segmented motors are samples of such zones. These vortices move from their forming points and strike the field walls. The kinetic energy of vortices change ...

Finite Length Discrete Matched Filters

Finite Impulse Response ( FIR ) Filters

Staggered Finite-Difference Schemes to Model Acoustic Wave Propagation in a Three-Dimensional Fluid-Solid Configuration

In this work, some strategies and methods, based on finite-difference schemes, are introduced to model the propagation of acoustic waves in a three-dimensional fluid-solid configuration. Specifically, we have considered a heterogeneous propagation medium placed inside a 3D rectangular volume. A plane interface separates the volume into two regions: the first region is a fluid and the second one...