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Process Fluid Dynamics and Turbomachinery

Oliver Litfin, M. Sc.

Bastian Schöneberger, M. Sc.

Illustrative Picture of the research group's topics

Top: Visualization of the turbulent structures including vortex shedding at the trailing edge of a centrifugal pump impeller from a Detached-Eddy-Simulation (SST-IDDES, Isosurface of Q-Criterion coloured with spanwise velocity);
Bottom: Film splitting in the coating gap at a reverse roll coating process (numerical simulation, VOF-method)

The research group „Process Fluid Dynamics and Turbomachinery“ deals with fluid mechanical and thermodynamical processes in the fields of process-, food- and medical engineering as well as development, design and optimization of turbomachines. Aside from the academical research the group successfully collaborates with industry.

In the field of turbomachinery the research group has long-term experience in designing and optimizing blowers for household appliances. Additionally, fans and blowers for special purposes are a main area of research, for example fans for respiratory devices, tunnel ventilation or large-scale blowers for pyrolysis plants. The group also has great expertise in the field of centrifugal pumps, especially pumps for wastewater applications.

The research field of process fluid dynamics is mainly filled with topics from life sciences. Core topics here are personalozied respiration and coating of transdermal therapeutical systems as well as novel cooling and drying technologies for food processing technology.

Based on the application the research group works with analytical, numerical or experimental methods.

No projects found.

Erosion optimzed blowers

Modeling erosion in turbomachinery is still a challenge to many academics and constructers. Although many models may exist, it is still mainly empirical and experimental. Through this work, it is to numerically study erosion in turbomachinery and to develop new turbomachinery design methods capable of producing low erosion fans and pumps and to develop existing erosion models to better describe its effects. The benefit of these methods regarding erosion are studied through CFD simulation coupled with erosion modeling as well as through experiment.

Comparative picture showing the differences in erosion rate depending on the fan design method

Left: Erosion rate in generic fan design; Right: Erosion rate in a fan designed through a new design method from this study

Software

  • ANSYS CFX, ANSYS Fluent, ANSYS Polyflow
  • Siemens Star-CCM+
  • Flow-3D
  • OpenFOAM
  • Siemens NX
  • MATLAB
  • LabVIEW

 

Test benches

  • Test rig for centrifugal pumps
  • Suction side test chamber for small fans and blowers
  • 5 generations artifical lung test bench

2019

  • , :
    Numerical investigation of trailing edge flow in centrifugal pump impellers
    13th European Turbomachinery Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2019 (Lausanne, 8. April 2019 - 12. April 2019)
    In: 13th European Turbomachinery Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2019
  • , , :
    Einflussfaktoren bei der Abkühlung von Backwaren
    27. GALA-Fachtagung "Experimentelle Strömungsmechanik" (Erlangen, 3. September 2019 - 5. September 2019)
    In: Proceedings der 27. GALA-Fachtagung "Experimentelle Strömungsmechanik"

2018

2017

2014

2012

2011