Scale resolving simulations of the water flow through a rod bundle with split-type spacer grid

16th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Matyushenko, A.A.^1 ; Garbaruk, A.V.^1

Saint-Petersburg State Politechnical University Russia, Politechnicheskaya 29, Saint-Petersburg

195251, Russia^1

关键词: Rod bundles;    Spacer grid;    Subchannels;    Water flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/572/1/012058/pdf
DOI  :  10.1088/1742-6596/572/1/012058

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Unsteady isothermal turbulent flow in periodic sub-channel of 5×5 rod bundle with split-type spacer grid is investigated using modern Scale Resolving Simulation methods: Wall Modelling Large Eddy Simulation (WMLES) and Scale Adapting Simulation (SAS). Solutions obtained with both methods show complicated swirling flow dissipating over the distance from spacer grid and are in a good agreement with the experimental data except an area in close vicinity of the vanes.