Preconditioned multigrid methods for unsteady incompressible flows

C Liu, X Zheng, CH Sung - Journal of Computational physics, 1998 - Elsevier
A highly efficient numerical approach based on multigrid and preconditioning methods is
developed for modeling 3D steady and time-dependent incompressible flows. Thek-ω …

Multipoint design optimization of a transonic compressor blade by using an adjoint method

J Luo, C Zhou, F Liu - Journal of Turbomachinery, 2014 - asmedigitalcollection.asme.org
This paper presents the application of a viscous adjoint method to the multipoint design
optimization of a rotor blade through blade profiling. The adjoint method requires about …

A Strongly Coupled Time-Marching Method for Solving the Navier–Stokes andk-ω Turbulence Model Equations with Multigrid

F Liu, X Zheng - Journal of Computational Physics, 1996 - Elsevier
Many researchers use a time-lagged or loosely coupled approach in solving the Navier–
Stokes equations and two-equation turbulence model equations in a time-marching method …

Turbulent transition simulation using the k–ω model

X Zheng, C Liu, F Liu, CI Yang - International Journal for …, 1998 - Wiley Online Library
This paper describes a novel approach in simulating laminar to turbulent transition by using
two‐equation models. The Total Stresses Limitation (TSL) concept is used to make the two …

A Modified Low-Reynolds-Number k-ω Model for Recirculating Flows

SH Peng, L Davidson, S Holmberg - 1997 - asmedigitalcollection.asme.org
A modified form of Wilcox's low-Reynolds-number k-ω model (Wilcox, 1994) is proposed for
predicting recirculating flows. The turbulent diffusion for the specific dissipation rate, ω, is …

[PDF][PDF] Turbulence modelling and turbulent-flow computation in aeronautics

MA Leschziner, D Drikakis - Aeronautical Journal, 2002 - cfd.spbstu.ru
Competitive pressures and economic constraints are driving aircraft manufacturers towards
an ever-increasing exploitation of CFD for design, optimisation and prediction of off-design …

A k-omega turbulence model for quasi-three-dimensional turbomachinery flows

R Chima - 34th Aerospace Sciences Meeting and Exhibit, 1995 - arc.aiaa.org
A two-equation k-co turbulence model has been developed and applied to a quasi-three-
dimensional viscous analysis code for blade-to-blade flows in turbomachinery. The code …

Low-speed preconditioning for strongly coupled integration of Reynolds-averaged Navier–Stokes equations and two-equation turbulence models

MS Campobasso, M Yan, A Bonfiglioli… - Aerospace Science and …, 2018 - Elsevier
Computational fluid dynamics codes using the density-based compressible flow formulation
of the Navier–Stokes equations have proven to be very successful for the analysis of high …

Turbulent Navier–Stokes analysis of an oscillating wing in a power-extraction regime using the shear stress transport turbulence model

MS Campobasso, A Piskopakis, J Drofelnik… - Computers & Fluids, 2013 - Elsevier
A wing that is simultaneously heaving and pitching may extract energy from an oncoming air
or water stream. The aerodynamic performance of this device in terms of extracted power …

Statistical evaluation of performance impact of flow variations for a transonic compressor rotor blade

Z Xia, J Luo, F Liu - Energy, 2019 - Elsevier
The effects of flow variations to the aerodynamic performance of turbomachinery blades are
considerable in the real world. Uncertainty quantification of aerodynamic performance is …