Complex Convective Heat Transfer of Condenser Combining Hybrid Fluid Network With Thermal Network

Abstract

The LCSC has a high electromagnetic load and heat, and its unique multi cavity cooling method of stator core has become an effective thermal management method for generators. However, due to the complex ventilation and cooling structure inside the LCSC, the research on CHTC in the stator core linear section isn't yet in-depth enough. In this paper, a HFNM is proposed for the first time for modelling the 3D fluid network method of the stator core linear section of the LCSC, combined with the 2D FNM of the LCSC end. This paper uses the HFNM results as the model boundary and establishes a comprehensive fluid-solid coupling model for LCSC. Using CFD, the flow rate variation law of the stator core linear section under different cold and hot cavity domains was thoroughly studied. Subsequently, a new dimensionless formula was redefined using the dimensionless constant as the Reynolds number and applied to a 3D thermal network of the LCSC to quickly assess the temperature distribution of the core. Finally, a temperature rise experiment was conducted to verify the accuracy of the simulation results.