A numerical method for 3D barotropic flows in turbomachinery |
| |
Authors: | Edoardo Sinibaldi François Beux Maria Vittoria Salvetti |
| |
Affiliation: | (1) Scuola Normale Superiore di Pisa, Piazza dei Cavalieri 7, 56126 Pisa, (Italy);(2) Dip. di Ingegneria Aerospaziale, Università di Pisa, via Caruso, 56122 Pisa, (Italy) |
| |
Abstract: | A numerical method for the simulation of 3D inviscid barotropic flows in rotating frames is presented. A barotropic state law incorporating a homogeneous-flow cavitation model is considered. The discretisation is based on a finite-volume formulation applicable to unstructured grids. A shock-capturing Roe-type upwind scheme is proposed for barotropic flows. The accuracy of the proposed method at low Mach numbers is ensured by ad-hoc preconditioning, preserving time consistency. An implicit time advancing only relying on the algebraic properties of the Roe flux function, and thus applicable to a variety of problems, is presented. The proposed numerical ingredients, already validated in a 1D context and applied to 3D non-rotating computations, are then applied to the 3D water flow around a typical turbopump inducer. |
| |
Keywords: | Barotropic Cavitation Turbomachinery Unstructured grids Low Mach Preconditioning Implicit |
本文献已被 SpringerLink 等数据库收录! |
|