Numerical Simulation of Gas-Dynamic Processes in Model Solid-Propellant Engines

This paper presents a computational technology for modeling unsteady gas mixture flows in the paths and chambers of solid-propellant rocket engines (SPREs). The technique is focused on the use of supercomputer technologies for three-dimensional modeling of propulsion systems with simulation of their...

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Vydané v:Mathematical models and computer simulations Ročník 17; číslo 5; s. 511 - 519
Hlavní autori: Zhukov, V. T., Krasnov, M. M., Kritsky, B. V., Novikova, N. D., Feodoritova, O. B., Arnst, E. A., Gross, I. N., Milekhin, Y. M., Sadovnichii, D. N., Shkurin, A. I.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Moscow Pleiades Publishing 01.10.2025
Springer Nature B.V
Predmet:
Boundary conditions
Chebyshev approximation
Computer simulation
Convection-diffusion equation
Distributed memory
Energy
Engines
Gas flow
Gas mixtures
Gases
Heat conductivity
High temperature gases
Mass flow
Mathematical Modeling and Industrial Mathematics
Mathematical models
Mathematics
Mathematics and Statistics
Numerical models
Propulsion systems
Simulation and Modeling
Software
Solid propellant rocket engines
Supercomputers
Thermal conductivity
Unsteady flow
Variables
Viscosity
Navier–Stokes equations
gas mixture
solid-propellant engine model
numerical simulation
ISSN:2070-0482, 2070-0490
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Shrnutí:This paper presents a computational technology for modeling unsteady gas mixture flows in the paths and chambers of solid-propellant rocket engines (SPREs). The technique is focused on the use of supercomputer technologies for three-dimensional modeling of propulsion systems with simulation of their operation with the specialized boundary conditions set close to realistic ones. The long-term goal is to transition to the virtual modeling of working processes instead of expensive full-scale experiments. The mathematical basis for describing the dynamics of a multicomponent gas mixture is the system of Navier–Stokes equations augmented by the convection–diffusion equations of the mixture’s components. The characteristics of the mixture (viscosity, thermal conductivity, heat capacity, and diffusion) are found by averaging the corresponding values of individual chemical components. The numerical model combines the advantages of splitting the system of determining equations, the reliability of the S.K. Godunov scheme for the realization of the convective stage, and the algorithmic efficiency of the Chebyshev scheme for solving the parabolic system of equations at the diffusion stage. The complete computational algorithm is implemented in C++ as a system of programs with tools to improve computational performance, including the use of parallel technologies for supercomputers with distributed and shared memory and graphics processors. The effectiveness of the approach is confirmed by computational studies of complex unsteady flows. The presented results of computations of gas-dynamic parameters of model devices testify to the correctness of the adopted problem formulation with the formulation of conditions determining the law of change in the mass flow of a high-temperature gas mixture at the given input boundary of the computational domain.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:2070-0482
2070-0490
DOI:10.1134/S2070048225700255