Logo Leibniz Universität Hannover
Institute of Turbomachinery and Fluid Dynamics
Logo Leibniz Universität Hannover
Institute of Turbomachinery and Fluid Dynamics
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Dipl.-Ing. Lars Wein


Head of Group
room: 213, Geb. 8140

phone:+49 511 762 2347
mail:weintfd.uni-hannover.de

Bild von Dipl.-Ing. Lars Wein

Activities

  • Computational Fluid Dynamics (CFD)
  • Labyrinth Seals
  • Axial Turbines
  • Test Rig Design
  • Constant Temperature Anemometry

Research Projects

Experimental and Numerical Investigation of Labyrinth Seals for Axial Turbomachinery

Labyrinth seals can be used to control the leakage of fluid through the clearance between shrouded blades and the stationary casing in turbomachinery applications. Since the leakage is a source of multiple aerodynamic loss mechanisms in the turbine stage, the leakage mass flow rate has to be minimized. At the same time, a minimum leakage rate has to be guaranteed to prevent heat damage when the seal is used in turbine rim seals. The Institute for Turbomachinery and Fluid Dynamics investigates the leakage behavior of different labyrinth seal designs and their interaction with the main flow path of low pressure turbines. It is the aim to gain a deeper knowledge of the flow inside the labyrinth seal and at the interface of the labyrinth seal and the main flow path. Therefore, experimental as well as turbulence resolving simulations will be performed. The investigations are conducted as part of the joint research program COOREFLEX-Turbo 4.2.5a in the frame of AG Turbo. It is supported by the Bundesministerium für Wirtschaft und Technologie (BMWi) and MTU Aero Engines AG.

Studies

  • Doctoral Studies: Institute for Turbomachinery and Fluid Dynamics, Leibniz Universität Hannover
  • Diploma Thesis: Design of a Test Rig for Optical and Pneumatic Measurements of the Leakage Flow in Contactless Seals
  • Thesis: Numerical Investigation of the Incident Flow of Turbocharger Compressors
  • Thesis: Numerical Investigation of Laminar to Turbulent Transition with LESOCC 2
  • Mechanical Engineering: Leibniz Universität Hannover. 2008-2014

Work Experience

  • Current Position: Research assistant at the Institute for Turbomachinery and Fluid Dynamics, since May 2014
  • Internship:  Siemens Industrial Turbomachinery AB, Finspång, Schweden 2013
  • Student Assistant: Institute for Turbomachinery and Fluid Dynamics, 2010-2014