...Chitrangini Sahu; T. I. Eldho; B. S. Mazumder This study investigates the turbulent flow properties experimentally in the vicinity of two side-by-side circular cylinders, along with the influence of the third cylinder of the same dimension placed in the upstream and successively in the downstream...

...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...

... 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...

...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...

... 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...

... 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...

... . Manuscript received October 28, 2018; final manuscript received March 6, 2019; published online April 15, 2019. Assoc. Editor: Wayne Strasser. 28 10 2018 06 03 2019 pumps flow (dynamics) friction viscosity Reynolds number computational fluid dynamics empirical modeling turbulence...

.... 965 – 972 . 10.2514/1.9589 [33] Quinn , W. R. , 2005 , “ Near-Field Measurements in an Equilateral Triangular Turbulent Freejet ,” AIAA J. , 43 ( 12 ), pp. 2574 – 2585 . 10.2514/1.14372 [34] Nikitopoulos , D. E. , Bitting , J. W. , and Gogineni , S. , 2003...

...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...

...-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...

... 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...

... 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...

...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...

...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...

... 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...

... ) and σ ε u = σ ε ( f k 2 / f ε ) are the counterpart of the unresolved kinetic energy and dissipation, respectively. In this way, f k and f ε contribute to changing the turbulent transport Prandtl number contributing to the decrease of the unresolved eddy...

...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...

... 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...

... 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...

...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...