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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2013, Volume 54, Issue 6, Pages 45–59
(Mi pmtf1120)
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This article is cited in 22 scientific papers (total in 22 papers)
Dispersion of a cloud of particles by a moving shock: Effects of the shape, angle of rotation, and aspect ratio
S. L. Davisa, T. B. Dittmanna, G. B. Jacobsa, W.-S. Donb a San Diego State University, San Diego, CA, 92182, USA
b Hong Kong Baptist University, Hong Kong, China
Abstract:
This paper discusses the particle-laden flow development from a cloud of particles in an accelerated flow behind a normal moving shock. The effects of the aspect ratio of a rectangular and ellipsoidal cloud and the cloud's angle of attack with respect to the carrier flow are studied. Computations are performed with an in-house high-order weighted essentially non-oscillatory (WENO-Z) finite-difference scheme-based Eulerian–Lagrangian solver that solves the conservation equations in the Eulerian frame, while particles are traced in the Lagrangian frame. Streamlined elliptically shaped clouds exhibit a lower dispersion than blunt rectangular clouds. The averaged and root-mean-square locations of the particle coordinates in the cloud show that the cloud's streamwise convection velocity increases with decreasing aspect ratio. With increasing rotation angle, the cross-stream dispersion increases if the aspect ratio is larger than unity. The particle-laden flow development of an initially moderately rotated rectangle is qualitatively and quantitatively comparable to the dispersion of an initially triangular cloud.
Keywords:
dispersion of particles, shock wave, high-order finite-difference monotonic scheme.
Received: 09.07.2012
Citation:
S. L. Davis, T. B. Dittmann, G. B. Jacobs, W.-S. Don, “Dispersion of a cloud of particles by a moving shock: Effects of the shape, angle of rotation, and aspect ratio”, Prikl. Mekh. Tekh. Fiz., 54:6 (2013), 45–59; J. Appl. Mech. Tech. Phys., 54:6 (2013), 900–912
Linking options:
https://www.mathnet.ru/eng/pmtf1120 https://www.mathnet.ru/eng/pmtf/v54/i6/p45
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