Post-processing of numerical and experimental data

Date and time: Monday, 13.30 - 15.00
Location: Lecture room at the institute of fluid mechanics
Begin: 25.04.2022
Lecturer: Dr. R. Semaan, PhD
  The lecture is held in english language.
  For acceptance of the module "Post-processing of numerical and experimental data" you also have to participate in the exercise sessions.
Date and time: Monday, 15.00 - 16.30
Location: CIP pool at the institute of fluid mechanics (if Corona regulations allow).
Begin: 02.05.2022
Tutor: Dr. R. Semaan, PhD

Course objective

The course teaches students how to analyze and assess all types of flow data. These are numerical (CFD) and experimental (PIV, hot-wire, etc.) data. At the end of the course, the students should be able to quantify how good their data are, to extract the main flow features and visualize them. In particular, the students should be able to assess the statistical and geometric error of their data for the first (mean) and second order (Reynolds stresses) quantities. They will also learn how to infer the error sources and their propagation. The students will be able to visualize and detect vortices and vorticity fields. Finally, the students will analyze the spectral content of their data using Fourier transform and dynamic mode decomposition, and extract coherent structures using proper orthogonal decomposition.

Course content

  • Fourier transform, Correlation function and spectra
  • Statistical principles, Statistical error, Geometric error, Estimator, expectation, variance and variability
  • Propagation of error
  • Vortex detection
  • Proper orthogonal decomposition, Dynamic mode decomposition