Numerical impacts on the strength of simulated dust devils
Responsible: Fabian Hoffmann?
Project type: bachelor thesis
Duration: 29/08/2011-21/11/2011

The strength of simulated dust devils is smaller than observed values. Particularly, the pressure deviation from ambient is more than one order of magnitude too small. The impact of numerical methods is investigated on the strength, frequency and structure of dust devils in a high resolution large-eddy simulation. Analysed numerical methods are the calculation of perturbation pressure and different advection schemes (Piacsek and Williams (1970) and Wicker and Skamarock (2002)).