Abstract
Turbulence modulation in particle-laden fluid flow, especially the influence of vortex shedding, was investigated based on the direct numerical simulation. To this end, we developed a finite-difference scheme to resolve the flow around each particle moving in turbulence. Energy budget around a sphere suggested that the energy production due to vortex shedding was about 20% of work by the particle. Homogeneous turbulence including many particles showed a modulation in background turbulence; namely, energy transfer from larger to smaller scale through wavenumber region corresponding to the mean spacing of particles. Taking these findings into account, a one-equation model for subgrid scale turbulence was suggested for the large-eddy simulation of particle-laden turbulence.
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© 1999 Springer Science+Business Media Dordrecht
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Kajishima, T., Takiguchi, S., Miyake, Y. (1999). Modulation and Subgrid Scale Modeling of Gas-Particle Turbulent Flow. In: Knight, D., Sakell, L. (eds) Recent Advances in DNS and LES. Fluid Mechanics and its Applications, vol 54. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4513-8_20
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DOI: https://doi.org/10.1007/978-94-011-4513-8_20
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