High Altitude Plume Simulations for a Solid Propellant Rocket
نویسندگان
چکیده
A simulation scheme is proposed for flowfield and radiation analysis of solid rocket exhaust plumes at high altitude. Several recently developed numerical procedures are used to determine properties of the gas and condensed phase Al2O3 particles, and spectrally resolved plume radiation calculations are performed using a Monte Carlo ray trace model. Simulations are run for a representative plume flow at 114 km, and a comparison is made with experimental measurements of UV radiance. A series of parametric studies involving simulations of this same flow are used to evaluate the influence of physical processes and input parameters related to gas-particle interaction, particle radiation, and the presence of soot.
منابع مشابه
Monte Carlo Simulation of a Rarefied Multiphase Plume Flow
A method for the simulation of flows involving a disperse particle phase and a rarefied gas is extended for increased accuracy and efficiency in modeling the high altitude plume flow from a solid propellant rocket. First, a procedure is presented so that calculations involving the interphase transfer of momentum and energy may be avoided in regions where these calculations will have negligible ...
متن کاملMonte Carlo Simulation of Particle Radiation in High Altitude Solid Rocket Plumes (Invited)
Several recently developed numerical schemes are used in an integrated framework to simulate the plume flow from a representative solid propellant rocket at an altitude of 114 km. In nonequilibrium regions the gas is modeled using the direct simulation Monte Carlo method, while a particle simulation method based on a simplified approximation of the Boltmann equation is used in near-equilibrium ...
متن کاملPlume Temperature Measurements of a Spin-Stabilized Rocket
Rocket plume temperature distribution plays an important role on the heat transfer analysis of launch carriers. Thus, a non-intrusive IR scanner is used in this paper to analyze the influence of spin motion on plume centerline temperature measurements of spinning solid-propellant rockets. Results show that the average error of temperature measurement is below 3.5% even with a 10% error of estim...
متن کاملA Monte Carlo Radiation Model for Simulating Rarefied Multiphase Plume Flows
A Monte Carlo ray trace radiation model is presented for the determination of radiative properties of Al2O3 particles in the high altitude plume of a solid propellant rocket. A polydisperse distribution of non-gray particles is modeled as an emitting, absorbing and scattering medium of arbitrary optical thickness. Strong two-way coupling is allowed between radiation and flowfield calculations, ...
متن کاملAcoustic-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 ...
متن کامل