Direct Numerical Simulation of Oil/Water Mixtures Using Front Capturing Techniques

I started my PhD project on the 1st of September, 2001. On June 12, 2007, I received my PhD title with my thesis on “Interactive visualisation techniques for large time-dependent data sets”. Take a look at my PhD wiki page for some more info about my thesis and the defence.

From the original project description: Numerical simulation of multiphase flows is currently one of the most challenging areas in Computational Fluid Dynamics (CFD). The present state of the art of the numerical methods for multiphase flows makes use of so-called two or multi-fluid models, in which volume averaged equations for the different phases are derived. Due to the averaging, information related to the small flow scales is lost. The main goal of this project is to create a numerical technique capable of simulating in detail the dynamics of a two-phase flow mixture, for example oil droplets in water or air bubbles in water.

In this project we aim to

  • develop visual data analysis and steering scenarios for semi-immersive virtual environments (VEs), and VE representations of the phase-front, with interactive particle tracing in the frontal zone.
  • develop an architecture for a co-processing visualization tool with an on-line network connection between the simulation and the visualization system.
  • develop efficient methods for the detection and time tracking of the front between different phases, based on previous work in this area. Based on the detection algorithm, techniques to adjust the grid at the position of the phase front will be developed.

For visualization of complex three-dimensional flows we want to make use of advanced 3D visualization facilities such as the Virtual Workbench at the Delft University of Technology.

The research will be performed in cooperation with Fluid Mechanics (TUD-OCP) and Applied Mathematical Analysis (TUD-EWI).

This research is funded by the NWO-EW Computational Science programme.