Extraction of initial dynamics of magnetic micro-convection

M. Klevs - A. Tatuļčenkovs - L. Puķina-Slava - G. Kitenbergs

MMML Lab, Department of Physics, University of Latvia, 3 Jelgavas str., Riga, LV-1004, Latvia

Abstract
Complex fluid flows are important in many real-life problems. For an in-depth understanding, new and more elaborate methods of flow description are necessary. Often experimental and numerical data are accumulated in large quantities, however, only simple flow properties are extracted. Here we present an approach that allows quantitative extraction of the initial dynamics for magnetic micro-convection. It analyzes the initial time dynamics of the Fourier coefficients of 2D flow snapshots. We demonstrate its effectiveness in both numerical and experimental data. In addition, the method is refined to account for noise that can be present in real-world data. This method can serve as a tool to directly compare mathematical models with experiments. Figs 6, Refs 17.