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@PHDTHESIS{Sabelberg:840791,
      author       = {Sabelberg, Enno},
      othercontributors = {Kneer, Reinhold and de Doncker, Rik W.},
      title        = {{E}mpirical model for evaluating jet impingement heat
                      transfer in presence of a spatially varying heat source},
      school       = {Rheinisch-Westfälische Technische Hochschule Aachen},
      type         = {Dissertation},
      address      = {Aachen},
      publisher    = {RWTH Aachen University},
      reportid     = {RWTH-2022-01255},
      pages        = {1 Online-Ressource : Illustrationen, Diagramme},
      year         = {2021},
      note         = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
                      University 2022; Dissertation, Rheinisch-Westfälische
                      Technische Hochschule Aachen, 2021},
      abstract     = {Jet impingement is a cooling technique with high local heat
                      transfer rates and suitable for applications with high local
                      thermal loads. In the field of power electronics, the power
                      density of electrical components and modules has risen
                      immensely in recent years. Due to high local thermal losses
                      of electronic modules, jet impingement cooling is a
                      promising approach for these applications. Yet, the
                      numerical evaluation of jet impingement cooling is
                      computational expensive, especially for more dimensional
                      setups. Jet impingement is examined as cooling application
                      focusing on the reduction of the computational effort.
                      Therefore, methods are developed to calculate
                      multi-dimensional temperature profiles for supplied
                      spatially varying heat flux. The methods are extended with
                      further heat conducting interlayer between heat source and
                      jet impingement. The jet impingement issue is therefore
                      continuously reduced to simplified problems, which are
                      solved separately and later combined to solve the general
                      issue. First, the simplified problem of rotationally
                      symmetric jet impingement with partial heating along the
                      wall is solved. Second, correlations for the temperature
                      distribution along the wall are identified. Third, the
                      correlations are combined with the principle of
                      superposition to generate the temperature profile for
                      rotationally symmetric but radially varying heat fluxes. The
                      superposition method is extended to solve a two-dimensional
                      temperature field with spatially varying heat fluxes. In
                      order to find a solution for the heat transfer in jet
                      impingement, including an interlayer, the superposition
                      method is coupled with a thermal conduction model. Compared
                      to simulation data, the iterative approach achieves adequate
                      results and requires significantly less calculation efforts.
                      This study presents stringent and reliable methods to solve
                      the temperature field for different setups of jet
                      impingement, focusing on cooling of spatially varying heat
                      fluxes, which is for example supplied by a power electronic
                      modules with multiple electrical components. This allows for
                      a computational efficient design process for jet impingement
                      coolers, in which additional interlayers have to be
                      considered.},
      cin          = {412610},
      ddc          = {620},
      cid          = {$I:(DE-82)412610_20140620$},
      typ          = {PUB:(DE-HGF)11},
      doi          = {10.18154/RWTH-2022-01255},
      url          = {https://publications.rwth-aachen.de/record/840791},
}