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Thermal Finite-Element Model of Electric Machine Cooled by Spray

Author

Listed:
  • Christian Bergfried

    (Institute for Accelerator Science and Electromagnetic Fields (TEMF), Technische Universität Darmstadt, 64289 Darmstadt, Germany
    Graduate School of Excellence Computational Engineering (CE), Technische Universität Darmstadt, 64289 Darmstadt, Germany)

  • Samaneh Abdi Qezeljeh

    (Graduate School of Excellence Computational Engineering (CE), Technische Universität Darmstadt, 64289 Darmstadt, Germany
    Institute for Fluid Mechanics and Aerodynamics (SLA), Technische Universität Darmstadt, 64289 Darmstadt, Germany)

  • Ilia V. Roisman

    (Institute for Fluid Mechanics and Aerodynamics (SLA), Technische Universität Darmstadt, 64289 Darmstadt, Germany)

  • Herbert De Gersem

    (Institute for Accelerator Science and Electromagnetic Fields (TEMF), Technische Universität Darmstadt, 64289 Darmstadt, Germany
    Graduate School of Excellence Computational Engineering (CE), Technische Universität Darmstadt, 64289 Darmstadt, Germany)

  • Jeanette Hussong

    (Graduate School of Excellence Computational Engineering (CE), Technische Universität Darmstadt, 64289 Darmstadt, Germany
    Institute for Fluid Mechanics and Aerodynamics (SLA), Technische Universität Darmstadt, 64289 Darmstadt, Germany)

  • Yvonne Späck-Leigsnering

    (Institute for Accelerator Science and Electromagnetic Fields (TEMF), Technische Universität Darmstadt, 64289 Darmstadt, Germany
    Graduate School of Excellence Computational Engineering (CE), Technische Universität Darmstadt, 64289 Darmstadt, Germany)

Abstract

The demand for higher power density in electrical machines necessitates advanced cooling strategies. Spray cooling emerges as a promising and relatively straightforward technology, albeit involving complex physics. In this paper, a quasi-3D thermal finite-element model of stator winding is created by the extrusion of a 2D cross-sectional finite-element model along the winding direction. The cooling effects of the spray impact are simulated as a heat flux that uses an impedance boundary condition at the surface of the winding overhang. The results confirm the advantageous performance of spray cooling, indicating that it may enable a tenfold increase in power density compared to standard air- or water-cooled machines.

Suggested Citation

  • Christian Bergfried & Samaneh Abdi Qezeljeh & Ilia V. Roisman & Herbert De Gersem & Jeanette Hussong & Yvonne Späck-Leigsnering, 2024. "Thermal Finite-Element Model of Electric Machine Cooled by Spray," Energies, MDPI, vol. 18(1), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:18:y:2024:i:1:p:84-:d:1555517
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