2026-04-17T19:07:56Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3324652026-02-07T01:06:15Zcom_2072_1033col_2072_452949

Detached eddy simulation of blade-pod interactions Dong, Xiao-Qian Yang, Chen-Jun Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits Finite element method Marine engineering Podded Propulsor, DES, RANS, CFD For the tractor type podded propulsor there is a strong interaction between propeller wake and pod housing, which would cause fluctuation of pod housing forces, even lead to cavitation on pod housing. In this paper, the DES model is employed to simulate the interaction between propeller blade wake and the pod housing for a puller-type podded propulsor. The DES simulation results are compared with those from the RANS simulations using the same grid set. It is shown that propeller and propulsor performances obtained by the two methods are quite similar, however, turbulence model and grid density have a great effect on the average and unsteady fluctuation of pod housing lateral force. Stronger vortexes after propeller are simulated by DES model and fine grid. Especially, at downstream of strut and pod, vortex structures of DES model are more complex, and stronger flow separation happens at the end of strut, cause larger pressure fluctuation near the end of the strut. 2015 Conference report Dong, X.-Q.; Yang, C.-J. Detached eddy simulation of blade-pod interactions. A: MARINE VI. "MARINE VI : proceedings of the VI International Conference on Computational Methods in Marine Engineering". CIMNE, 2015, p. 639-645. ISBN 978-84-943928-6-3. 978-84-943928-6-3 https://hdl.handle.net/2117/332465 eng Open Access 7 p. application/pdf CIMNE