The unsteady flow around a tractor thruster is simulated by solving the RANS equations with a sliding mesh technique. A muitiblock Navier-Stokes solver (FINFLO) developed at Helsinki University ofTechnology is used in the calculations. In this paper a computational method with special emphasis on the sliding"mesh technique is described. The flow over a BB series propeller is analysed and a comparison with experimental data is made. This calculation is made with a fine grid and used as a reference for the rest ofthe computations, where the flow around the tractor thruster is simulated. The thruster consists of the BB-series propeller, a pod and a strut. The sliding surface is located between the propeller and strut. The calculations are performed in two different ways. In the first case the flow quantities are circumferentially averaged on the sliding surface in order to reduce computing time. The second calculation is time-accurate.
|Title of host publication||Proceedings of 7th International Conference on Numerical Ship Hydrodynamics|
|Publisher||U.S. Office of Naval Research (ONR)|
|Number of pages||12|
|Publication status||Published - 1999|
|MoE publication type||A4 Article in a conference publication|
|Event||7th International Conference on Numerical Ship Hydrodynamics - Nantes, France|
Duration: 19 Jul 1999 → 22 Jul 1999
|Conference||7th International Conference on Numerical Ship Hydrodynamics|
|Period||19/07/99 → 22/07/99|
Sanchez-Caja, A., Rautaheimo, P., Salminen, E., & Siikonen, T. (1999). Computation of the incompressible viscous -flow around a tractor thruster using a sliding-mesh technique. In J. Piquet (Ed.), Proceedings of 7th International Conference on Numerical Ship Hydrodynamics [3.2] U.S. Office of Naval Research (ONR).