Affiliation:
1. College of Shipbuilding Engineering, Harbin Engineering University, 145 Nantong Street, Harbin 150001, China
Abstract
With recent development of computer technology, the use of large eddy simulation method to solve industrial problems is gaining acceptance. From a theoretical and applied perspective, a local dynamic k-equation subgrid-scale model is applied to study the flow over a marine propeller. This local dynamic SGS model of LES have already been used in simple flows such as classical Taylor-Green vortex flow to investigate its robustness and superior than other dynamic SGS models. In this paper it will be applied to a more complex flows, i.e., simulation of a marine propeller wake, to further evaluate its ability range. 42 intentionally selected numerical experiments were conducted. The results of this local dynamic model of LES shows some superior than the dynamic Smagorinsky model, and well captures the wake evolution mechanism of a propeller, although which actually depends on its geometry.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Open Fund of the Key Laboratory of Far-shore Wind Power Technology of Zhejiang Province in China
Natural Science Foundation of Heilongjiang Province in China
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science