Analysis of the Interfacial Mixing Properties of a Richtmyer- Meshkov Instability

Lehrstuhl für Aerodynamik
Semesterarbeit / Masterarbeit /

Interfacial instabilities that can develop during the fluiddynamic interaction between fluids are essential to a range of technical applications. The Richtmyer-Meshkov instability (RMI) develops when a perturbed interface between two fluids with different density is impulsively accelerated. An engineering application of the RMI is the enhancement of mixing processes. Recent numerical and experimental studies investigate the influence of the initial disturbance amplitude on the interfacial mixing properties. Previous studies at the chair of aerodynamics have shown that numerical simulations of the RMI using the in-house CFD solver ALPACA capture the relevant physical phenomena of the RMI.

In the scope of this thesis the RMI developing at a Vshaped Air-Helium interface (see figure 1) shall be investigated and compared to experimental results [1]. After a suitable simulation setup is identified, the relation between the initial disturbance amplitude and the linear growth rate, an indicator for the interfacial mixing properties, should be investigated. The results can be compared to analytical models and experimental data.

What you learn during this thesis
Insights into the modeling of fluid interfaces and the simulation of interfacial instabilities in a stateof- the-art research CFD code Working on modern HPC computing systems of the Leibniz-Rechenzentrum (LRZ).



Interest in multiphase flows and interfacial instabilities Knowledge of Unix based systems and the C++ or Python programming language is helpful, but not required.

Möglicher Beginn
Josef Winter
Raum: 1616
Tel.: 089 289 16127