60 citations · 194 across the 17 of their papers we have counts for
6 papers · 1 filter
Modeling and simulations of moving droplet in a Rarefied gas
S. Tiwari, A. Klar, G. Russo
We study a two phase flow with interactions of liquid and rarefied gas inside the gas phase. The gas phase is modeled by the BGK model of the Boltzmann equation. The liquid phase i…
Thermophoresis of Janus particles at large Knudsen numbers
Tobias Baier, Sudarshan Tiwari, Samir Shrestha +2
The force and torque on a Janus sphere moving in a rarefied gas with a thermal gradient are calculated. The regime of large Knudsen number is considered, with the momenta of imping…
Simulation of Fluid Particle Cutting - Validation and Case Study
Mark W. Hlawitschka, Sudarshan Tiwari, James Kwizera +2
In this paper we present the comparison of experiments and numerical simulations for bubble cutting by a wire. The air bubble is surrounded by water. In the experimental setup an a…
Thermally-driven flows between a Leidenfrost solid and a ratchet surface
Steffen Hardt, Sudarshan Tiwari, Tobias Baier
The significance of thermally-driven flows for the propulsion of Leidenfrost solids on a ratchet surface is studied based on a numerical solution of the Boltzmann equation. In cont…
Momentum and Mass Fluxes in a Gas Confined between Periodically Structured Surfaces at Different Temperatures
A. A. Donkov, Sudarshan Tiwari, Tengfei Liang +3
It is well known that in a gas-filled duct or channel along which a temperature gradient is applied, a thermal creep flow is created. Here we show that a mass and momentum flux can…
Momentum Transfer to Nanoobjects between Parallel Heated Plates
Steffen Hardt, Sudarshan Tiwari, Axel Klar
A small-scale, trapezoidal rigid body in the gas-filled gap between two parallel plates at different temperatures is considered. An analytical expression for the force onto the bod…