High-order sliding-mesh spectral difference method for petascale simulations of turbulent flows around marine propellers
Abstract
The objectives of this research project are 1) to develop a new high-order accurate and highly efficient solver for turbulent flows about complex rotating geometries such as propellers and 2) to perform massively parallel high-order accurate large eddy simulations for turbulent flows around marine propulsors at practical Reynolds numbers that have been used in experiments. After two-year development of the computational solver using a new curved sliding-meshing technology, we have now a predictive capability for turbulent flows around single open propellers as well as multiple propellers, e.g., contrarotating propellers. We have successfully simulated turbulent flows over a rotating P4119 propeller using three highly integrated sliding-mesh interfaces at Reynolds number 10,000. Such a simulation was demonstrated with satisfactory results after a preliminary stage of validation against experimental data. In the remaining performance period of this project, we will conduct a detailed validation against the experimental data for turbulent flows around P4119 propeller at a Reynolds number of 1.46 million. Meanwhile, we will perform large eddy simulation for turbulent flows past two counter-rotating propellers at a similar Reynolds number. The geometries of such counter-rotating propellers have beenprovided by Dr. Thad Michael of NSWC Carderock. We have successfully completed meshing two counter-rotating propellers using POINTWISE software. Our simulations will be performed on DoD ORS computers as well as the newly built ACRES computer cluster of Clarkson University.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 26, 2019
- Source ID
- N000142012007
Entities
People
- Chunlei Liang
Organizations
- Clarkson University
- Office of Naval Research
- United States Navy