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Keywords: LES
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Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2020, 142(1): 011403.
Paper No: FE-19-1304
Published Online: October 4, 2019
... simulation (LES). High resolution is guaranteed by carefully fulfilling the requisites of y + < 1 , Δ x + < 100 , and Δ z + < 40 to resolve at least 80% of the turbulent kinetic energy. The result indicates that the cavity in growth is always undeveloped as the ambient hydrostatic pressure keeps...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021401.
Paper No: FE-17-1756
Published Online: June 29, 2018
...Jonathan K. Lai; Elia Merzari; Yassin A. Hassan Large eddy simulation (LES) is conducted for the flow over the shell side of a helical coil steam generator (HCSG) heat exchanger. Simulations are conducted on a simplified experimental test section that represents a one-column region of the helical...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021103.
Paper No: FE-18-1030
Published Online: June 29, 2018
... January 17, 2018; final manuscript received June 2, 2018; published online June 29, 2018. Assoc. Editor: Daniel Livescu. 17 01 2018 02 06 2018 Cavitation Cavity flows Hydrodynamics LES Turbulence Unsteady flows Vortices Cavitation is the process of vaporization, bubble...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011106.
Paper No: FE-17-1562
Published Online: June 29, 2018
... NGINEERING . Manuscript received September 7, 2017; final manuscript received June 1, 2018; published online June 29, 2018. Assoc. Editor: Bart van Esch. 07 09 2017 01 06 2018 Cavitation Jets LES Multiphase flows Vortices Two-stage electrohydraulic servovalves play important...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. November 2018, 140(11): 111201.
Paper No: FE-17-1757
Published Online: May 18, 2018
...Solkeun Jee; Jongwook Joo; Ray-Sing Lin An efficient large-eddy simulation (LES) approach is investigated for laminar-to-turbulent transition in boundary layers. This approach incorporates the boundary-layer stability theory. Primary instability and subharmonic perturbations determined...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. July 2018, 140(7): 071401.
Paper No: FE-17-1051
Published Online: March 16, 2018
...Puxuan Li; Steve J. Eckels; Garrett W. Mann; Ning Zhang The setup of inlet conditions for a large eddy simulation (LES) is a complex and important problem. Normally, there are two methods to generate the inlet conditions for LES, i.e., synthesized turbulence methods and precursor simulation methods...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. June 2018, 140(6): 061104.
Paper No: FE-17-1384
Published Online: March 13, 2018
... 2018 Aerodynamics Computational fluid dynamics Fluid-structure interaction Hydrodynamics LES Vortices Wind and tidal turbines work under highly turbulent conditions and are subjected to a large range of velocities and turbulence intensities compromising their survivability...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. July 2018, 140(7): 071203.
Paper No: FE-17-1617
Published Online: March 13, 2018
... in the channel. Reynolds-averaged Navier–Stokes (RANS) equations and large eddy simulation (LES) results revealed changes in vortex topology, with the flow regime changing from laminar to turbulent. During the turbulent flow regime in the recirculation zone, periodically recurring vortex systems are formed...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. July 2018, 140(7): 071201.
Paper No: FE-17-1526
Published Online: March 13, 2018
...Paul Ziadé; Mark A. Feero; Philippe Lavoie; Pierre E. Sullivan The shear layer development for a NACA 0025 airfoil at a low Reynolds number was investigated experimentally and numerically using large eddy simulation (LES). Two angles of attack (AOAs) were considered: 5 deg and 12 deg. Experiments...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 051104.
Paper No: FE-17-1585
Published Online: January 9, 2018
... are examined to ensure the consistency of the results. Furthermore, large eddy simulation (LES) analyses are performed to contrast the behavior in a well-established turbulent to a transitional flow regime. The results reveal a distinctive common flow pattern change (from an “open separation” to a “reattached...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 050905.
Paper No: FE-16-1831
Published Online: December 22, 2017
... / 2 ρ a v g Δ U 2 from flash simulations at different mesh resolutions and plotted at τ = 1.44 Compressible flows Computational fluid dynamics Fluid instability LES Turbulence The implosion phase in inertial confinement fusion (ICF) [ 1 ] can...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Guest Editorial
J. Fluids Eng. May 2018, 140(5): 050301.
Paper No: FE-17-1590
Published Online: December 20, 2017
...Ben Thornber; Vincent Wheatley; Oleg Schilling 18 09 2017 25 10 2017 Compressible flows LES Turbulence Unsteady flows The study of compressible turbulent mixing associated with Richtmyer–Meshkov (RM), Rayleigh–Taylor, and Kelvin–Helmholtz instabilities is motivated...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 050902.
Paper No: FE-16-1785
Published Online: December 20, 2017
...Nicholas Gibbons; Rolf Gehre; Stefan Brieschenk; Vincent Wheatley A laser ignition system suitable for a hypersonic scramjet engine is considered. Wall-modeled large eddy simulation (LES) is used to study a scramjet-like geometry with a single hydrogen injector on the inlet, at a Mach 8 flight...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. March 2018, 140(3): 031105.
Paper No: FE-17-1153
Published Online: October 27, 2017
... in the solenoid valve agreed well with the experimental results. Acoustics Free surface flows LES Turbulence Vortices Antilock braking systems (ABSs) are used to improve the safety of vehicles by preventing tires from skidding as a result of the brakes locking up. Two types of solenoid valves...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2018, 140(1): 011108.
Paper No: FE-17-1044
Published Online: October 4, 2017
...Site Hu; Chao Zhou; Zhenhua Xia; Shiyi Chen This study investigates the aerodynamic performance of a low-pressure turbine, namely the T106C, by large eddy simulation (LES) and coarse grid direct numerical simulation (CDNS) at a Reynolds number of 100,000. Existing experimental data were used...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. November 2017, 139(11): 111204.
Paper No: FE-17-1211
Published Online: August 11, 2017
...Eduard Ron; Kam Chana This paper expands on the numerical simulation of entropy noise by performing a comparison of two commonly used models for resolving turbulent flow field: large eddy simulation (LES) and unsteady Reynolds-averaged Navier–Stokes (URANS). A brand new numerical procedure...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. October 2017, 139(10): 101302.
Paper No: FE-16-1827
Published Online: July 10, 2017
... in the experiment involves three stages, namely, cavity growth, shedding, and collapse. Numerical methods adopt large eddy simulation (LES) with Cartesian cut-cell mesh. Given that the speed of the model changes during the experiment, this paper examines cases with varying constant speeds. The free surface effects...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. September 2017, 139(9): 091205.
Paper No: FE-16-1733
Published Online: June 28, 2017
... November 8, 2016; final manuscript received March 21, 2017; published online June 28, 2017. Assoc. Editor: Mark F. Tachie. 08 11 2016 21 03 2017 Compressible flows Fluid instability LES Shocks Turbulence Turbulent mixing zones (TMZ) may appear at interfaces between...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. September 2017, 139(9): 091302.
Paper No: FE-16-1368
Published Online: June 28, 2017
... manuscript received March 12, 2017; published online June 28, 2017. Assoc. Editor: John Abraham. 15 06 2016 12 03 2017 Gas-solid LES Particle flows Since being invented by John M. Finch in the U.S. in 1885, a cyclone separator has been utilized in a wide range of applications...
Journal Articles
Journal:
Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. July 2017, 139(7): 071204.
Paper No: FE-16-1528
Published Online: April 26, 2017
... ] and in simulations [ 27 – 33 ]. The literature is extensive and covers various types of interfaces as well as different methods to create the necessary shock wave. The simulations utilize various numerical schemes include large eddy simulations (LES) and direct numerical simulations (DNS). Within both methods...
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