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Institute of Turbomachinery and Fluid Dynamics
Logo Leibniz Universität Hannover
Institute of Turbomachinery and Fluid Dynamics
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Malte Nyhuis, M.Sc.


Wissenschaftlicher Mitarbeiter
room: 211, Geb. 8140

phone:+49 511 762 14132
mail:nyhuistfd.uni-hannover.de

Research

Turbulent interactions in multistage compressors

At present, there is no numerical model that provides equally acceptable predictions of local flow and integral operating behaviour for compressor cascades and multi-stage axial compressors. However, individual model combinations lead to a sufficiently accurate prediction of flow fields. Furthermore, a so far not understood excessive turbulence production in compressor cascades is observed. It is hypothesized that even small deviations of the inlet boundary conditions in connection with adverse pressure gradients and work input into the flow cause large deviations downstream. This influence is fueled by prediction errors of the turbulence and transition model and multi-stage effects. This hypothesis will be investigated to allow an improvement of the numerical flow prediction of multistage compressors.  For this purpose, scale-resolving simulations are used, which provide an insight into flows that cannot be achieved experimentally.

Arbeitsgebiete

  • Computational Fluid Dynamics (RANS / LES)
  • Turbulent flows

Studium

  • Doctoral studies: Institut für Turbomaschinen und Fluid-Dynamik (TFD) seit 2020
  • Master thesis: "Development of an advanced turbulent boundary condition"
  • Bachelor thesis: "Modelling and numerical analysis of the axial force compensation system from an electrical driven transsonic diagonal compressor”
  • M.Sc Leibniz Universität Hannover 2020
  • B.Sc Leibniz Univerisität Hannover 2018