Numerical simulation of turbulent flow in open channel with groynes

This book provides students and researchers in fluid engineering with an up-to-date overview of turbulent flow research in the areas of simulation and modeling. A key element of the book is the systematic, rational development of turbulence closure models and related aspects of modern turbulent flow theory and prediction. Starting with a review of the spectral dynamics of homogenous and inhomogeneous turbulent flows, succeeding chapters deal with numerical simulation techniques, renormalization group methods and turbulent closure modeling. Each chapter is authored by recognized leaders in their respective fields, and each provides a thorough and cohesive treatment of the subject.

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Numerical simulation of turbulent flow and forced heat transfer of water/CuO nanofluid inside a horizontal dimpled fin

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-019-08752-1 ◽

2019 ◽

Vol 139 (6) ◽

pp. 3711-3724

Author(s):

Farzad Pourfattah ◽

Omid Ali Akbari ◽

Vahid Jafrian ◽

Davood Toghraie ◽

Elnaz Pourfattah

Keyword(s):

Heat Transfer ◽

Numerical Simulation ◽

Turbulent Flow

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Direct Numerical Simulation of Turbulent Flow in a Wavy Channel.

JSME International Journal Series B ◽

10.1299/jsmeb.41.447 ◽

1998 ◽

Vol 41 (2) ◽

pp. 447-453 ◽

Cited By ~ 6

Author(s):

Takashi OHTA ◽

Yutaka MIYAKE ◽

Takeo KAJISHIMA

Keyword(s):

Numerical Simulation ◽

Direct Numerical Simulation ◽

Turbulent Flow ◽

Wavy Channel

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Interactions between Tandem Cylinders in an Open Channel: Impact on Mean and Turbulent Flow Characteristics

Water ◽

10.3390/w13131718 ◽

2021 ◽

Vol 13 (13) ◽

pp. 1718

Author(s):

Hasan Zobeyer ◽

Abul B. M. Baki ◽

Saika Nowshin Nowrin

Keyword(s):

Turbulent Flow ◽

Open Channel ◽

Recirculation Zone ◽

Three Dimensional ◽

Flow Characteristics ◽

Flow Recirculation ◽

Tandem Cylinders ◽

Flow Development ◽

The Mean ◽

Recirculation Length

The flow hydrodynamics around a single cylinder differ significantly from the flow fields around two cylinders in a tandem or side-by-side arrangement. In this study, the experimental results on the mean and turbulence characteristics of flow generated by a pair of cylinders placed in tandem in an open-channel flume are presented. An acoustic Doppler velocimeter (ADV) was used to measure the instantaneous three-dimensional velocity components. This study investigated the effect of cylinder spacing at 3D, 6D, and 9D (center to center) distances on the mean and turbulent flow profiles and the distribution of near-bed shear stress behind the tandem cylinders in the plane of symmetry, where D is the cylinder diameter. The results revealed that the downstream cylinder influenced the flow development between cylinders (i.e., midstream) with 3D, 6D, and 9D spacing. However, the downstream cylinder controlled the flow recirculation length midstream for the 3D distance and showed zero interruption in the 6D and 9D distances. The peak of the turbulent metrics generally occurred near the end of the recirculation zone in all scenarios.

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