Effects of subfilter velocity modelling on dispersed phase in LES of heated channel flow - Publikacja - MOST Wiedzy

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Effects of subfilter velocity modelling on dispersed phase in LES of heated channel flow

Abstrakt

A non-isothermal turbulent flow with the dispersed phase is modelled using the Large Eddy Simulation (LES) approach for fluid, one-way coupled with the equations of point-particle evolution. The channel is heated at both walls and isoflux boundary conditions are applied for fluid. Particle velocity and thermal statistics are computed. Of particular interest are the r.m.s. profiles and the probability density function of particle temperature in the near-wall region. We compare our findings with available reference data for particle-laden, heated channel flow. Moreover, an open issue in LES is the influence of non-resolved (residual) scales of fluid velocity and temperature fields on particles. In the present contribution, we apply a stochastic model for subfilter fluid velocity at the particle positions that aims at reconstructing the effects of the smallest scales of turbulence on particle dynamics. We analyse the impact of this model on particle thermal statistics.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
Journal of Physics : Conference Series nr 333,
ISSN: 1742-6588
Język:
angielski
Rok wydania:
2011
Opis bibliograficzny:
Pozorski J., Knorps M., Łuniewski M.: Effects of subfilter velocity modelling on dispersed phase in LES of heated channel flow// Journal of Physics : Conference Series -Vol. 333, (2011),
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1088/1742-6596/333/1/012014
Weryfikacja:
Politechnika Gdańska

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