Fluid Dynamics and Turbulent Flows

In the light of rapidly increasing applications of large-eddy simulations (LES), it is deemed necessary to impose some quality assessment measures for such studies. The verification of LES calculations is difficult because of the fact that both the subgrid scale (SGS) model contribution and numerical discretization er…

Detailed instantaneous velocity fields of a jet in crossflow have been measured with stereoscopic particle image velocimetry (PIV). The jet originated from a fully developed turbulent pipe flow and entered a crossflow with a turbulent boundary layer. The Reynolds number based on crossflow velocity and pipe diameter wa…

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• GAMZE GEDİZ İLİŞ

A finite volume method based on a velocity-only formulation is used to solve the flow field around a confined circular cylinder in a channel in order to investigate lateral wall proximity effects on stability, Strouhal number, hydrodynamic forces and wake structure behind the cylinder for a wide range of blockage rati…

• MEHMET ŞAHİN

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• AHMET CİHAT BAYTAŞ

The writers’ experiments on local scour at vertical cylinders placed in a sand bed show that similitude of large-scale turbulence is an important consideration influencing equilibrium depth of local scour. For the range of cylinder diameters used in their experiments, the writers identify a direct trend between equili…

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• MURAT ÇETİN

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• KADİR BİLEN

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• OSMAN TURAN

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• ERCAN ERTÜRK

River confluences are complex hydrodynamic environments where convergence of incoming flows produces complicated patterns of fluid motion, including the development of large‐scale turbulence structures. Accurately simulating confluence hydrodynamics represents a considerable challenge for numerical modeling of river f…

• GÖKHAN KİRKİL