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Keywords: turbulence
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Journal Articles
Article Type: Research-Article
J. Fluids Eng. February 2022, 144(2): 021501.
Paper No: FE-21-1146
Published Online: August 9, 2021
...Anurag Sharma; Bimlesh Kumar This present study analyzes the Reynolds stress anisotropy in the nonuniform sediment beds under the condition of no seepage and downward seepage flow. The results show the estimation of the deviation measure from the isotropic turbulence in view of Reynolds stress...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. October 2021, 143(10): 101204.
Paper No: FE-21-1025
Published Online: June 4, 2021
... without a noncondensation gas. e-mail:  anh.ld@vnu.edu.vn e-mail:  phanhoang90@pusan.ac.kr e-mail:  tranthehung_k24@lqdtu.edu.vn 24 01 2021 29 04 2021 04 06 2021 cavitation noncondensation gas thermodynamic effect homogeneous model turbulence Cavitation...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. March 2021, 143(3): 031503.
Paper No: FE-20-1201
Published Online: December 11, 2020
...M. Coussirat; F. Moll Cavitation in pressure injectors/atomizers affects the liquid/spray jet behavior at its outlet. The type of atomization induced by cavitation allows developing efficient devices if this cavitation state is controlled. Cavitating flow is related to turbulent and multiphase...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. July 2020, 142(7): 071207.
Paper No: FE-19-1718
Published Online: March 27, 2020
... is to analyze the turbulent characteristics around specially designed three-dimensional (3D) breakwaters, and its impact on sediment deposition under coastal wave actions. Both computational fluid dynamics (CFD) simulations and experimental measurements were conducted. In order to validate the CFD models used...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. May 2020, 142(5): 051301.
Paper No: FE-19-1472
Published Online: February 4, 2020
... rotation turbulence Bluff bodies under motion are generally exposed to short or extended acceleration and deceleration periods. Such motions induce unsteady loading and wakes that may differ significantly from bodies under constant speed. The distinct flow dynamics experienced by accelerated...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. October 2019, 141(10): 101202.
Paper No: FE-18-1717
Published Online: April 15, 2019
... ρ = fluid density Φ = flow rate coefficient Ψ = head coefficient ω = angular speed Subscripts eff = efficiency h = hydraulic lam = laminar p = power tur = turbulent w = rotational speed References [1...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. March 2019, 141(3): 031302.
Paper No: FE-17-1760
Published Online: October 4, 2018
...; published online October 4, 2018. Assoc. Editor: Samuel Paolucci. This work is in part a work of the U.S. Government. ASME disclaims all interest in the U.S. Government's contributions. 27 11 2017 10 08 2018 gas-liquid mixing multiphase flows turbulence duct channel and pipe flows...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021303.
Paper No: FE-18-1237
Published Online: August 16, 2018
...David A. Hullender A new approach for obtaining a normalized closed-form frequency domain analytical model for the non-Newtonian shear thinning effects on the pressure and shear stress transients in a pretransient turbulent flow of fluids in smooth circular lines is formulated. The Oldroyd-B model...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021101.
Paper No: FE-17-1671
Published Online: June 29, 2018
...-dimensional computational fluid dynamics (CFD) study is carried out. Shear stress transport (SST) turbulence and Rayleigh–Plesset cavitation models are used in simulations. Inlet blade angles for both hub and shroud are changed and pump performance (head-discharge) and cavitation (head-inlet pressure) graphs...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021401.
Paper No: FE-17-1756
Published Online: June 29, 2018
... coils using half-rods. Although the rods are wall-bounded, the flow still exhibits the turbulent characteristics and fluctuations from vortex shedding that one would expect from crossflow around a cylinder. The spectral element, computational fluid dynamics (CFD) code Nek5000, is used to capture...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021103.
Paper No: FE-18-1030
Published Online: June 29, 2018
... is 163.93 Hz, and the cavitation shedding frequency at the short side is 306.67 Hz, which is about twice the value of the former. The filtered vorticity transport equation is employed to investigate the cavitation–vortex–turbulence interaction. Results indicate that vortex stretching is the major promoter...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011205.
Paper No: FE-17-1612
Published Online: June 29, 2018
...Varun Chitta; Tausif Jamal; D. Keith Walters This paper investigates the ability of computational fluid dynamics (CFD) simulations to accurately predict the turbulent flow separating from a three-dimensional (3D) axisymmetric hill using a recently developed four-equation eddy-viscosity model (EVM...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011103.
Paper No: FE-18-1056
Published Online: June 27, 2018
...Kuldeep Singh; José Carlos Páscoa In the present work, a numerical study is carried out to compare the performance of seven turbulence models on a single pitching blade of cycloidal rotor operating in deep dynamic stall regime at moderate Reynolds number. The investigated turbulence models were: (i...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. December 2018, 140(12): 121108.
Paper No: FE-18-1031
Published Online: June 26, 2018
... representations of reality. The twin jet water facility (TJWF) designed and built at the University of Tennessee, Knoxville was created for this purpose. The facility features twin planar-like turbulent free shear jets injecting fluid into a transparent tank to study a variety of flow behavior. The experimental...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. December 2018, 140(12): 121101.
Paper No: FE-17-1509
Published Online: June 13, 2018
... Drag Turbulence Turbulence modeling Wakes Partially‐averaged Navier–Stokes (PANS) [ 1 , 2 ] simulations have been successfully used for several different flow and heat transfer studies around ground vehicles and more generally bluff bodies [ 3 , 4 ]. Examples are the flow around a square...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. November 2018, 140(11): 111202.
Paper No: FE-18-1007
Published Online: May 18, 2018
...Seyed Sobhan Aleyasin; Nima Fathi; Mark Francis Tachie; Peter Vorobieff; Mikhail Koupriyanov The aim of this study is to examine the effects of Reynolds number (Re = 6000–20,000) on mean and turbulent quantities as well as turbulent structures in the near and intermediate regions of equilateral...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. August 2018, 140(8): 081107.
Paper No: FE-17-1545
Published Online: April 10, 2018
... the mean flow and the turbulence characteristics. Here, the proper orthogonal decomposition (POD) technique was employed on the velocity measurements obtained using particle image velocimetry (PIV) to quantify the external characteristics of a superheated water jet released into water. This was done...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. August 2018, 140(8): 081103.
Paper No: FE-17-1615
Published Online: March 29, 2018
... in the J OURNAL OF F LUIDS E NGINEERING . Manuscript received September 27, 2017; final manuscript received February 13, 2018; published online March 29, 2018. Assoc. Editor: Kwang-Yong Kim. 27 09 2017 13 02 2018 Boundary layers Computational fluid dynamics Turbulence Unsteady...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. August 2018, 140(8): 081102.
Paper No: FE-17-1404
Published Online: March 29, 2018
...Brian R. Elbing; Libin Daniel; Yasaman Farsiani; Christopher E. Petrin Commercial water tunnels typically generate a momentum thickness based Reynolds number (Re θ ) ∼1000, which is slightly above the laminar to turbulent transition. The current work compiles the literature on the design of high...
Journal Articles
Article Type: Research-Article
J. Fluids Eng. August 2018, 140(8): 081203.
Paper No: FE-17-1518
Published Online: March 29, 2018
...Kamal Selvam; Emir Öngüner; Jorge Peixinho; El-Sayed Zanoun; Christoph Egbers Velocity fluctuations are widely used to identify the behavior of developing turbulent flows. The pressure on the other hand, which is strongly coupled with the gradient of the mean velocity and fluctuations, is less...