PDF Simulations of a Bluff-Body Stabilized Flow
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چکیده
منابع مشابه
Near-Blowoff Dynamics of a Bluff-Body Stabilized Flame
This paper describes an experimental investigation of the dynamics of a near-blowoff, bluff-body stabilized flame. This work is motivated by a number of prior observations showing that near-blowoff flames exhibit enhanced unsteadiness. Laser sheet imaging studies and particle image velocimetry velocity field measurements show that the transient dynamics of these flames occur in two distinct sta...
متن کاملLarge eddy simulation/probability density function simulations of bluff body stabilized flames
0 10 20 30 −50 0 50 100 150 r (mm) U (m /s ) x/DB = 0.2 0 10 20 30 −10 −5 0 5 10 r (mm) V (m /s ) x/DB = 0.2 0 10 20 30 −50 0 50 100 150 r (mm) U (m /s ) x/DB = 0.6 0 10 20 30 −10 −5 0 5 10 r (mm) V (m /s ) x/DB = 0.6 0 10 20 30 −50 0 50 100 150 r (mm) U (m /s ) x/DB = 1.4 0 10 20 30 −10 −5 0 5 10 x/DB = 1.4 r (mm) V (m /s ) Experiment Raman et al. LES/HPDF Liu et al. Merci et al. Fig. 1. Mean ...
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The aerodynamic plasma actuators have shown to be efficient flow control devices in various applications. In this study the results of flow control experiments utilizing single dielectric barrier discharge plasma actuators to control flow separation and unsteady vortex shedding from a circular cylinder in cross-flow are reported. This work is motivated by the need to reduce landing gear noise f...
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Joint probability density function (PDF) calculations are reported of the bluff-body stabilized flames (HM1, HM2, and HM3) and the results are compared with the available experimental data. The calculations are based on the modeled transport equation for the joint PDF of velocity, turbulence frequency, and composition (species mass fractions and enthalpy) using the interaction by exchange with ...
متن کاملBluff Body Flow Separation Control using Surface Dielectric Barrier Discharges
Surface dielectric barrier discharges (DBDs) are used to delay flow separation behind a bluff body in atmospheric pressure air. The bluff body is made by connecting a flat plate to a half cylinder tangentially as a round-cornered trailing edge. Four DBD plasma actuators are attached along the surface of the half cylinder. Particle Image Velocimetry (PIV) is utilized for studying the velocity fi...
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ژورنال
عنوان ژورنال: Journal of Computational Physics
سال: 2001
ISSN: 0021-9991
DOI: 10.1006/jcph.2001.6704