Numerical simulations of time-periodic flows are an essential design tool for a wide range of engineered systems, including jet engines, wind turbines and flapping wings. Conventional solvers for time-periodic flows are limited in accuracy and efficiency by the low-order Finite Volume and time-marching methods they typically employ. These methods introduce significant numerical dissipation in t...

The objective of the Stanford ASC project is to develop a framework able to perform multi-disciplinary, integrated simulations on massively parallel platforms. 4 This paper focuses on the turbomachinery computation and, in particular, on the physics of interaction of different turbomachinery components in the engine. Typical flow features such as tip and horse-shoe vortices as well as blade wak...

Multiblock structured meshes offer better computational efficiency than the unstructured meshes which, on the other hand, are more flexible for complex geometries. The multiblock structured meshing could be more useful if the partitioning of the domain can be performed automatically. In this paper, we consider various automated blocking approaches for some turbomachinery zones. We then assess t...

An implicit procedure based on the artificial compressibility formulation is presented for the numerical solution of the two-dimensional incompressible steady Navier-Stokes equations

Considerable progress in development and application of CFD for aeroengine internal flow systems has been made in recent years. CFD is regularly used in industry for assessment of air systems, and the performance of CFD for basic axisymmetric rotor/rotor and stator/rotor disc cavities with radial throughflow is largely understood and documented. Incorporation of three dimensional (3D) geometric...

The recent improvements in turbomachinery design combined to the unavoidable requirements of kerosene savings require to analyze the exceptional operating regime of bladed disks, for which large deformations and large displacements can occur. It seems then quite appropriate to consider the geometrically nonlinear effects in the computational models dedicated to the analysis of mistuned turbomac...

* NRC Research Associate, Turbomachinery and Propulsion System Division, Member AIAA. Located at Ohio Aerospace Institute ICOMP, 22800 Cedar Point Rd., Cleveland, OH 44142, USA = Senior Scientist, Turbomachinery and Propulsion System Division, Associate Fellow AIAA # Associate Professor, Institute of Fluid Science, Associate Fellow AIAA Copyright © 2002 by the American Institute of Aeronautics ...