Engineering topics
Koehler, Timothy
Publications and source records attributed to Koehler, Timothy.
Compact Diffusion Bonded Heat Exchanger Fatigue Life Simulations.
Abstract not provided.
DSMC Simulations of Turbulent Flows at Moderate Reynolds Numbers.
Abstract not provided.
Molecular-Gas-Dynamics Simulation of Turbulent Minimal Couette Flow.
Abstract not provided.
Molecular-Level Simulations of the Turbulent Taylor-Green Flow.
Abstract not provided.
Three-Dimensional DSMC Simulations of the Rayleigh-Taylor Instability.
Abstract not provided.
DSMC Simulations of Turbulent Energy Decay in the Taylor-Green Vortex Flow.
Abstract not provided.
Continuum and Particle Simulations of the Richtmyer-Meshkov Instabilities.
Abstract not provided.
Gas-Induced Motion of an Object in a Liquid-Filled Housing During Vibration: I. Analysis.
Abstract not provided.
Gas-Induced Motion of an Object in a Liquid-Filled Housing during Vibration: II. Experiments.
Abstract not provided.
Gas-Induced Rectified Motion of a Solid Object in a Liquid-Filled Housing during Vibration: Analysis and Experiments.
Abstract not provided.
Three-Dimensional DSMC Simulations of the Rayleigh-Taylor Instability in Gases.
Abstract not provided.
Direct simulation Monte Carlo investigation of the Rayleigh-Taylor instability
In this paper, the Rayleigh-Taylor instability (RTI) is investigated using the direct simulation Monte Carlo (DSMC) method of molecular gas dynamics. Here, fully resolved two-dimensional DSMC RTI simulations are performed to quantify the growth of flat and single-mode perturbed interfaces between two atmospheric-pressure monatomic gases as a function of the Atwood number and the gravitational acceleration. The DSMC simulations reproduce many qualitative features of the growth of the mixing layer and are in reasonable quantitative agreement with theoretical and empirical models in the linear, nonlinear, and self-similar regimes. In some of the simulations at late times, the instability enters the self-similar regime, in agreement with experimental observations. Finally, for the conditions simulated, diffusion can influence the initial instability growth significantly.
Direct Simulation Monte Carlo Investigation of Hydrodynamic Instabilities in Gases.
Abstract not provided.