New model to predict the velocity and acceleration of accelerating spherical particles

H Kalman, D Portnikov - Powder Technology, 2023 - Elsevier
The equation of motion for an accelerating particle is complicated to solve, primarily
because of the Basset-history term. Therefore, most solutions found in the literature are …

Sediment movement over type A piano key weirs

B Kumar, S Kadia, Z Ahmad - Journal of Irrigation and Drainage …, 2021 - ascelibrary.org
This investigation deals with the mechanics of movement of singular quartz gravel and
coarse sand riverbed particles upstream and over the inlet key of three Type A piano key …

Acceleration length and time of falling spherical particles

H Kalman, D Portnikov - Powder Technology, 2023 - Elsevier
Acceleration length and time are required for various aspects of system design. However,
simple and accurate equations that can be used by designers are lacking. Therefore, in this …

Free falling of non-spherical particles in Newtonian fluids, A: Terminal velocity and drag coefficient

H Kalman, D Portnikov - Powder Technology, 2024 - Elsevier
The terminal velocity and drag coefficient are vital parameters for designing industrial
systems involving free-falling particles. While the literature on spherical particles is …

Modeling of conductive particle motion in viscous medium affected by an electric field considering particle-electrode interactions and microdischarge phenomenon

G Eslami, E Esmaeilzadeh, AT Pérez - Physics of Fluids, 2016 - pubs.aip.org
Up and down motion of a spherical conductive particle in dielectric viscous fluid driven by a
DC electric field between two parallel electrodes was investigated. A nonlinear differential …

Free falling of nonspherical particles in Newtonian fluids, B: Acceleration

H Kalman, D Portnikov - Powder Technology, 2024 - Elsevier
The acceleration length of nonspherical particles is required for various aspects of system
design. However, no simple or usable equations can be found in literature. Therefore, this …

Development and validation of a reduced order history force model

HA Elghannay, DK Tafti - International Journal of Multiphase Flow, 2016 - Elsevier
The history force model accounts for temporal development in fluid gradients in the viscous
region surrounding a particle in point particle methods. The calculation of the history force …

Analysis of the velocity and displacement of a condensing bubble in a liquid solution

P Donnellan, E Byrne, K Cronin - Chemical Engineering Science, 2015 - Elsevier
The absorption of steam bubbles in a hot aqueous solution of Lithium Bromide is a key
process that occurs in the absorber vessel of a heat transformer system. During the …

Free Falling of Spheres in a Quiescent Fluid

S Hedayati Nasab - 2017 - spectrum.library.concordia.ca
Motion of spheres falling through fluids is a classical problem in fluid mechanics. The
problem is solved for steady motion and other special cases such as for small and large …

Homotopy perturbation method for unsteady motion of a single bubble in a highly viscous liquid

M Shahsavari, MR Oshaghi, H Afshin… - Chemical Engineering …, 2021 - Taylor & Francis
In this study, the dynamics of the accelerated and steady-state motion of a single bubble in a
quiescent highly viscous Newtonian liquid was investigated theoretically and …