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Xin Zhang, Heng Zhang and Jie Li
A zonal detached eddy simulation (ZDES) method, based on the two-equation k-? SST turbulence model, was employed to predict stall characteristics and capture small-scale vortex structures in the wake region of the main wing under the post-stall condition...
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Witold Klimczyk and Adam Sieradzki
Modeling of Unmanned Aerial Vehicles (UAV) propellers in a global, multidisciplinary aeroacoustic optimization was investigated. The modeling consists of three aspects: geometry, aerodynamics, and aeroacoustics. Firstly, a parametric geometry model was e...
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Lukas Sandmaier, Peter Meusburger and Helmut Benigni
The complex flow conditions in Pelton turbines make it challenging to gain detailed insight into the local flow processes. However, CFD methods offer vast potential for developing and optimising Pelton turbines due to these flow conditions. In a comprehe...
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Rafik Absi and Hitoshi Tanaka
Turbulence related to flow oscillations near the seabed, in the wave bottom boundary layer (WBBL), is the phenomenon responsible for the suspension and transport of sediments. The vertical distribution of turbulent eddy viscosity within the WBBL is a key...
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Satoshi Matsuda and Tokihiro Katsui
The Reynolds-averaged Navier?Stokes (RANS)-based computational fluid dynamics (CFD) calculation using a two-equation turbulence model, such as the k?omega shear-stress transport (SST) model, is a mainstream method with sufficient accuracy for the estimat...
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Songyan Tian, Yanhui Duan and Hongbo Chen
To facilitate future Hypersonic Flight Vehicle (HFV) implementation with high maneuverability throughout its reentry trajectory, an Active Jets-Matrix (AJM) is designed to serve as the flapless pitch control surface. The AJM consists of four control grou...
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Christoph Bode, Jens Friedrichs, Dominik Frieling and Florian Herbst
For the numerical prediction of turbomachinery flows, a two-equation turbulence model in combination with a proper transition model to account for laminar boundary layers and their transition to turbulence is state of the art. This paper presents the abi...
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Zizang Yang, Lianyuan Zheng, Phillip Richardson, Edward Myers and Aijun Zhang
NOAA?s National Ocean Service is upgrading three existing northern Gulf of Mexico (GOM) operational nowcast/forecast systems (OFS) by integrating them into one single system (INGOFS) and developing additional domain coverage to encompass the lower Missis...
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Hermann Knaus, Martin Hofsäß, Alexander Rautenberg and Jens Bange
A model for the simulation of wind flow in complex terrain is presented based on the Reynolds averaged Navier?Stokes (RANS) equations. For the description of turbulence, the standard k-e, the renormalization group (RNG) k-e, and a Reynolds stress turbule...
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B. S. Purwanto
Pág. pp. 58 - 68
Density current is a type of current that occurs when fluid flow enters a fluid body of different density. The density difference introduces stratification state that requires treatment in the parameterization of turbulence. Due to the geometric shape of...
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