Searched for: author%3A%22Pacha+Sanjeevi%2C+S.K.%22
(1 - 7 of 7)
document
Pacha Sanjeevi, S.K. (author), Padding, J.T. (author)
We investigate the average drag, lift, and torque on static assemblies of capsule-like particles of aspect ratio 4. The performed simulations are from Stokes flow to high Reynolds numbers (0.1 ≤ Re ≤ 1,000) at different solids volume fraction (0.1 ≤ ɛ<sub>s</sub> ≤ 0.5). Individual particle forces as a function of the incident angle ϕ with...
journal article 2020
document
Pacha Sanjeevi, S.K. (author)
This work focuses on creating a recipe for parametrizing flow around assemblies of non-spherical particles. A multi-relaxation time lattice Boltzmann method (MRT-LBM) is used to simulate the flow. The research focuses on 3 different developments. First, different boundary conditions available in the literature for LBM are tested to identify the...
doctoral thesis 2019
document
Fitzgerald, B. (author), Zarghami, A. (author), Mahajan, V.V. (author), Pacha Sanjeevi, S.K. (author), Mema, I. (author), Vikrant, V. (author), El Hasadi, Yousef M.F. (author), Padding, J.T. (author)
In this paper, we present a number of key numerical methods that can be used to study elongated particles in fluid flows, with a specific emphasis on fluidised beds. Fluidised beds are frequently used for the production of biofuels, bioenergy, and other products from biomass particles, which often have an approximate elongated shape. This...
journal article 2019
document
Vila, A. (author), Pacha Sanjeevi, S.K. (author), Padding, J.T. (author), Pirker, Stefan (author)
Fractures of particle assemblies happen frequently in dense gas-solid systems leading to a notable heterogeneity in the particle configuration, especially in case of cohesive powders and non-spherical particle interlocking. In this work, we investigate the influence of such heterogeneities on the hydrodynamic drag by studying the idealized...
journal article 2019
document
Pacha Sanjeevi, S.K. (author), Zarghami, A. (author), Padding, J.T. (author)
Various curved no-slip boundary conditions available in literature improve the accuracy of lattice Boltzmann simulations compared to the traditional staircase approximation of curved geometries. Usually, the required unknown distribution functions emerging from the solid nodes are computed based on the known distribution functions using...
journal article 2018
document
Pacha Sanjeevi, S.K. (author), Kuipers, J. A.M. (author), Padding, J.T. (author)
Accurate direct numerical simulations are performed to determine the drag, lift and torque coefficients of non-spherical particles. The numerical simulations are performed using the lattice Boltzmann method with multi-relaxation time. The motivation for this work is the need for accurate drag, lift and torque correlations for high Re regimes,...
journal article 2018
document
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
Searched for: author%3A%22Pacha+Sanjeevi%2C+S.K.%22
(1 - 7 of 7)