- Autor
- Municchi, Federico
- Radl, Stefan
- TitelMomentum, heat and mass transfer simulations of bounded dense mono-dispersed gas-particle systems
- Datei
- Persistent Identifier
- Erschienen inInternational journal of heat and mass transfer
- Erscheinungsjahr2017
- LicenceCC BY-NC-ND
- Download Statistik1340
- Peer ReviewJa
- AbstractParticle Resolved Direct Numerical Simulation (PR-DNS) is employed to study momentum, heat and mass transfer in confined gas-particle suspensions. In this work, we show that the presence of wall boundaries induces an inhomogeneous particle distribution, and as a consequence continuous phase fields exhibit peculiar profiles in the wall-normal direction. Therefore, we first propose a correlation for the particle volume fraction as a function of the distance from the wall and the bulk particle concentration. Secondly, we quantify wall effects on flow field and interphase transfer coeffcients (i.e., the flow field, a scalar field, as well as the Nusselt number and drag coeffcient). We show that these effects do not depend significantly on the Reynolds number in case an appropriate scaling is applied. Finally, we propose correlations to reconstruct the continuous phase fields in the proximity of adiabatic walls. Also, we provide interpolation tables for the correction to the drag force and the Nusselt number that are helpful in unresolved Euler-Lagrange simulations.
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