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Thursday 04 December 2008, 14:15-16:00
The Behaviour of Inertial Particles in a Turbulent, Variable Temperature Flow >
- đ¤ Speaker: James J Riley, PACCAR Professor of Engineering, University of Washington
- đ Date & Time: Thursday 04 December 2008, 14:15 - 16:00
- đ Venue: Lecture Room 6, Engineering Department
Abstract
We have conducted direct numerical simulations and theoretical analysis to study the behaviour of inertial particle dispersion and temperature statistics in stationary, isotropic turbulence subject to a uniform temperature gradient. The analysis for both particle dispersion and particle temperature statistics follows from the classical theory of Taylor (PLMS, 1921). From this theory, as with particle dispersion, both the short and long time behaviour of the mean and fluctuating particle temperature can be cast in simple analytical form. Surprisingly, it is found that the long-time behaviour of the particle temperature does not depend explicitly on the particle Stokes number. The results from the direct numerical simulations are consistent with this prediction.
Series This talk is part of the Engineering Department Energy, Fluids and Thermo seminars series.
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