Journal
ACTA MECHANICA
Volume 230, Issue 2, Pages 517-539Publisher
SPRINGER WIEN
DOI: 10.1007/s00707-018-2268-2
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Funding
- U.S. National Science Foundation (NSF) [CNS1513031, CBET-1706130]
- Southern University of Science and Technology, China
- National Center for Atmospheric Research [CISL-P35751014, CISL-UDEL0001]
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In this paper, turbulent pipe flows laden with finite-size particles are investigated, using the direct numerical simulations based on the lattice Boltzmann method. Our focus is on the modulation of turbulence statistics in the pipe due to the presence of finite-size neutrally buoyant particles, and the question if the characteristics of modulation differ from those in a turbulent channel flow under comparable system parameters in order to reveal the effect of curved walls in the pipe. The mechanisms responsible for modulations of the turbulent intensity in the pipe flow are clarified through a quantitative budget analysis of the turbulent kinetic energy.
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