Large-Eddy Simulation of Propeller Flows Using an Unstructured Overset Grid Method*

We discuss the application of a novel unstructured overset grid methodology to compute the flow around a marine propeller. The numerical algorithm is based on that developed by Mahesh et al. [J. Compt. Phys (2004) 197:215-240], and addresses two significant challenges posed by the overset methodology - discrete conservation and scaling. The simulations consider both forward and crashback modes of operation. The results are compared to available experimental data and previous LES studies. Details of the flow field are discussed.