numerical simulation of shock waves structure in an annular channel
Authors
abstract
in this work, the feasibility study for design of a laboratory sample rde which has an annular geometry with diameter of 76 mm and length of 101 mm has been performed. detonation engines are expected to be used as propulsion system in aerospace applications in the future. several types of detonation engines are currently under examination, including the rotating detonation engine (rde). first, numerical studies are validated comparing the fluent results with the experimental ones. then, the geometry and equivalence ratio of injection mixture are investigated parametrically. considering the negligible variations of thermodynamics parameters in the radial direction of flow field to reduce the computational costs, also a 2d model is used for numerical simulations. results show for the case with the equivalence ratio of 1.2, detonation speed, pressure, and temperature behind detonation front is more than the equivalence ratio of 0.8. also, maximum detonation speed and pressure behind detonation take place in stoichiometric conditions. the parametric study of the chamber length effects was also conducted using a length 0.5 and 2 times of the main chamber. because the chamber outflow is subsonic at some regions, chamber length change has a significant effect on the engine performance and flow field. the results point out that increasing the chamber length in low injection pressure and high injection pressure leads to increasing and decreasing the height of detonation front, respectively.
similar resources
effect of sub-grid scales on large eddy simulation of particle deposition in a turbulent channel flow
چکیده ندارد.
15 صفحه اولNumerical modeling of shock waves in biomedicine
We have developed a multi-phase compressible fluid solver that can handle shock waves efficiently and accurately. Using a level set formulation to treat sharp interfaces and employing multi-resolution techniques, we can study complex shock-bubble interactions. In this work, shock-induced bubble collapse interactions near a deformable interface are presented as a model for a simplified extracorp...
full textNumerical simulation of Faraday waves
Laboratoire de Physique et Mécanique des Milieux Hétérogènes (PMMH) Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI) Centre National de la Recherche Scientifique (CNRS) UMR 7636 Université Paris 6 et Paris 7 10, rue Vauquelin 75231 Paris Cedex 5 France Laboratoire d’Informatique pour la Mécanique et les Sciences de l’Ingénieur (LIMSI) Centre National de la Re...
full textNumerical Solution of Cylindrically Converging Shock Waves
Abstract—The cylindrically converging shock wave was numerically simulated by solving the Euler equations in cylindrical coordinates with TVD scheme and MUSCL [1] approach, using Roe's approximate Riemann solver [2] and super-bee nonlinear limiter [3]. The present study used the in house code developed for this purpose. The behavior of the solution in the vicinity of axis is investigated and ...
full textWave Theory II — Numerical Simulation of Waves — (1) Weve Equations and Numerical Simulation of Waves
This course describes the fundamental theories of the numerical simulation methods of wave phenomena by using computers. In this first lecture, wave equations in different areas are briefly reviewed, and are generalized into the common equation. Then, the purposes and the advantages of the numerical simulation are described. Finally, the methods which are described in this course are introduced...
full textMy Resources
Save resource for easier access later
Journal title:
مکانیک سیالات و آیرودینامیکجلد ۴، شماره ۲، صفحات ۰-۰
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023