Numerical Simulation of Supersonic Gas Jet Flows and Acoustics Fields
ثبت نشده
چکیده
منابع مشابه
Use of Stochastic Turbulence Models in Jet Acoustics
There are many approaches to determine the sound propagated from turbulent flows. In hybrid methods, the turbulent noise source field is computed or modeled separately from the far-field calculations. To have an initial and quick estimation of the sound propagation, less computationally intensive methods can be developed using stochastic models of the turbulent fluctuations. In this paper, ...
متن کاملAn Innovation in Film Cooling of the Gas Turbine Blades Applying an Upstream Jet
A new design concept is introduced to control the near-wall integration between the hot-gas boundary layer and the cooling jets in order to enhance the adiabatic film cooling effectiveness of the gas turbine blades. In this new approach, another film cooling port, having a very low blowing ratio, which prevents formation of the counter-rotating vortex pare, is applied just upstream of the main ...
متن کاملCFD Analysis of Supersonic Coaxial Jets on Effect of Compressible Spreading Rates
Prevailing high-speed air-breathing propulsion systems invariably banks on coaxial jets which plays a vigorous role in stabilization of flames and combustion emission. Coaxial jets have applications in supersonic ejectors, noise control techniques and enhancement of mixing. Coaxial jet nozzles regulate spreading rates by developing virtuous mean flow and shortening primary flow potential core l...
متن کاملOptimization Studies of Planar Supersonic Gas-jets for Beam Profile Monitor Applications *
Supersonic gas-jets have attracted much interest as experimental targets in several fields of science since they combine low internal temperatures with high directionality. Axisymmetric jets have found widespread application, triggering a wealth of studies on their properties, while only a limited number of detailed studies have been done on planar jets. In this paper, the design of a beam prof...
متن کاملRans/les Methodology for Supersonic Transverse Jet Interactions with Approach Flow*
This work discusses some ongoing efforts towards the simulation of supersonic transverse jet interactions using LES. The code numerics feature a higher-order scheme with a "resurrected" limiting approach by the Jameson's dissipation scheme for dealing with shocks and other discontinuities. The methodology involves generating a "realistic" turbulent boundary layer using the "recycling-rescaling"...
متن کامل