Highly Efficient Heat Transfer Through Multi-phase Cooling (B02)

• Subject Area: Fluid Mechanics
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 492661287

Cooling is essential for light-weight electrical machine development, in particular for unsteady machine operation. Heat can be most efficiently transferred by multi-phase fluid flows. The present project investigates rotor cooling by heat pipes, which are attractive for both efficiency and simple design. Optimisation potential by the working medium and the structure of a porous medium inside, together with system rotation, is investigated. The project develops a highly accurate numerical model using an eXtended Discontinuous Galerkin method to calculate the coupled flow and heat transfer in heat pipes in detail. The project complements the project B1, in which boiling in the stator is considered.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 361: Computational Electric Machine Laboratory: Thermal Modelling, Transient Analysis, Geometry Handling and Robust Design
• International Connection: Austria
• Applicant Institution: Technische Universität Darmstadt
• Project Heads: Professor Dr.-Ing. Günter Brenn; Professor Dr.-Ing. Martin Oberlack