Searched for: subject%3A%22multiphase%255C%2Band%255C%2Bparticle%255C-laden%255C%2Bflows%22
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Schutte, K.C.J. (author), Portela, L. (author), Twerda, A. (author), Henkes, R.A.W.M. (author)
We have developed and applied an Eulerian-Lagrangian model for the transport, formation, break-up, deposition and re-entrainment of particle agglomerates. In this paper, we focus on agglomeration and break-up. Simulations were carried out to investigate what changes in the turbulent flow are inflicted by the presence of the agglomerates. Also...
journal article 2018
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Pacha Sanjeevi, S.K. (author), Padding, J.T. (author)
The flow around different prolate (needle-like) and oblate (disc-like) spheroids is studied using a multi-relaxation-time lattice Boltzmann method. We compute the mean drag coefficient CD,ϕ at different incident angles ϕ for a wide range of Reynolds numbers ( Re ). We show that the sine-squared drag law CD,ϕ=CD,ϕ=0∘+(CD,ϕ=90∘−CD,ϕ=0∘)sin2ϕ holds...
journal article 2017
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Gillissen, J.J.J. (author)
Using direct numerical simulations of turbulent Couette flow, we predict drag reduction in suspensions of neutrally buoyant fluid spheres, of diameter larger than the Kolmogorov length scale. The velocity fluctuations are enhanced in the streamwise direction, and reduced in the cross-stream directions, which is similar to the more studied case...
journal article 2013
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Zhao, L. (author), Andersson, H.I. (author), Gillissen, J.J.J. (author)
Transfer of mechanical energy between solid spherical particles and a Newtonian carrier fluid has been explored in two-way coupled direct numerical simulations of turbulent channel flow. The inertial particles have been treated as individual point particles in a Lagrangian framework and their feedback on the fluid phase has been incorporated in...
journal article 2013
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Belt, R.J. (author), Daalmans, A.C.L.M. (author), Portela, L.M. (author)
In fully developed single-phase turbulent flow in straight pipes, it is known that mean motions can occur in the plane of the pipe cross-section, when the cross-section is non-circular, or when the wall roughness is non-uniform around the circumference of a circular pipe. This phenomenon is known as secondary flow of the second kind and is...
journal article 2012
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