40 citations · 237 across the 34 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…
Simulating spiraling bubble movement in the EL approach
Andreas Weber, Hans-Jörg Bart, Axel Klar
Simulating the detailed movement of a rising bubble can be challenging, especially when it comes to bubble path instabilities. Free rising ellipsoidal bubbles not only move in stra…
Experimental Validation of a Microscopic Ellipsoidal Particle Model Immersed in Fluid Flow
A. Meurer, A. Weber, H. -J. Bart +1
A simulation of ellipsoidal particles inside a fluid flow is presented and validated from our own lab size experiments where data has been recorded using a camera set-up and post-p…
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…