32 citations · 94 across the 16 of their papers we have counts for
16 papers
CFD study of particle back-flow in pneumatic conveying systems due to triboelectrification
Otome Obukohwo, Andrew Sowinski, Poupak Mehrani +1
In industrial plants, pneumatic conveying systems are often used to convey particles from one location to another. Surprisingly, in bench-scale experiments, clusters of particles s…
Spatially resolved measurement of the electrostatic charge of turbulent powder flows
Wenchao Xu, Simon Jantač, Tatsushi Matsuyama +1
This article reports on measurements of the electrostatic charge of particles in a turbulent duct flow. In contrast to previous charge measurements, which do not apply to turbulent…
Airborne Virus Transmission: Increased Spreading Due to Formation of Hollow Particles
Gizem Ozler, Holger Grosshans
The globally supported social distancing rules to prevent airborne transmission of COVID-19 assume small saliva droplets evaporate fast and large ones, which contain most viral cop…
Triboelectric Charging Model for Particles with Rough Surfaces
Simon Jantač, Jarmila Pelcová, Jana Sklenářová +3
The triboelectric charging of particles depends on the contact area of the particle and the contacting surface. Even though the surface topology determines the real contact area, p…
Suppression and Control of Bipolar Powder Charging by Turbulence
Simon Jantač, Holger Grosshans
Current models predict particles of the same material but different sizes to charge bipolar upon contacts; the resulting charge peaks endanger process safety. However, we found wal…
Effect of Drag Force Modeling on the Flow of Electrostatically Charged Particles
Gizem Ozler, Mustafa Demircioglu, Holger Grosshans
In CFD simulations of two-phase flows, accurate drag force modeling is essential for predicting particle dynamics. However, a generally valid formulation is lacking, as all availab…
Influence of weak electrostatic charges and secondary flows on pneumatic powder transport
Holger Grosshans
The dynamics of the transported powder determines the functionality and safety of pneumatic conveying systems. The relation between the carrier gas flow, induced by the flown-throu…
Recent progress in CFD modeling of powder flow charging during pneumatic conveying
Holger Grosshans, Simon Jantač
Thus far, Computational Fluid Dynamics (CFD) simulations fail to predict the electrostatic charging of particle-gas flows reliably. The lack of a predictive tool leads to powder op…
Experimental study of humidity influence on triboelectric charging of particle-laden duct flows
Wenchao Xu, Holger Grosshans
Electrostatic charge on powders arises during pneumatic transport due to particle-particle and particle-surface interactions via triboelectrification. This is a potential threat to…
Review on CFD modeling of electrostatic powder charging during pneumatic conveying
Holger Grosshans, Simon Jantac
Thus far, Computational Fluid Dynamics (CFD) simulations fail to reliably predict the electrostatic charging of powder during pneumatic conveying. The lack of a predictive tool is…
Simulation of PMMA powder flow electrification using a new charging model based on single-particle experiments
Holger Grosshans, Wenchao Xu, Tatsushi Matsuyama
Thus far, simulations have failed to predict accurately electrostatic powder charging during pneumatic transport. We advanced the modeling of powder flow charging by a three-part s…
Simulation of the flow of an explosive atmosphere exposed to a hot surface
Subrahmanyeswara Velagala, Priyank Raval Sai Charan Singh Chowhan, Ghazaleh Esmaeelzade +2
The accidental ignition of combustible atmospheres by hot surfaces is of great concern for chemical and process plant safety. In this paper, we present our research regarding the e…
Eulerian formulation for the triboelectric charging of polydisperse powder flows
Metin Zeybek, Holger Grosshans
We propose an Eulerian formulation for the triboelectric charging of powder flows. Recently, continuum descriptions of the charging of monodisperse and bidisperse powder appeared.…
Measurement of the deposit formation during pneumatic transport of polydisperse PMMA powder
Nuki Susanti, Holger Grosshans
Deposits which form during the pneumatic transport of particles are a frequent source of explosions in industrial facilities. Thus, to contribute to the operational safety of indus…
The effect of electrostatic charges on particle-laden duct flows
Holger Grosshans, Claus Bissinger, Mathieu Calero +1
We report on direct numerical simulations of the effect of electrostatic charges on particle-laden duct flows. The corresponding electrostatic forces are known to affect particle d…
Numerical investigation of transient, low-power metal vapour discharges occurring in near limit ignitions of flammable gas
Rajiv Shekhar, Sergey Gortschakow, Holger Grosshans +2
This article presents an investigation of a transient (30 μs - 5 ms) electrical discharge in metal vapour with low voltage (< 50 V) and current (< 1 A), drawn between two separatin…