Results 21 to 30 of about 117,677 (282)

RANS Study on the Impact of Equivalence Ratio on Natural Gas/Diesel-Fueled Combustion in RCCI Engine [PDF]

open access: yesJournal of Applied and Computational Mechanics
The primary reason in favor of Reactivity Controlled Compression Ignition (RCCI) is that combustion occurs at low temperature, leading to low thermal NOx. Using the RCCI approach is highly demanded due to stringent emission laws.
Fathi Hamdi   +2 more
doaj   +1 more source

EXPERIMENTAL AND NUMERICAL INVESTIGATION ON MANEUVERING PERFORMANCE OF SMALL WATERPLANE AREA TWIN HULL

open access: yesBrodogradnja, 2021
Free running model tests and a system-based method are employed to evaluate maneuvering performance for a Small Waterplane Area Twin Hull (SWATH) ship in this paper.
Kun Dai, Yunbo Li
doaj   +1 more source

Modelling the Wake Flow Behind a Model of Horizontal Axis Wind Turbine using RANS Approach: A Comparative Study [PDF]

open access: yesJournal of Engineering Research - Egypt, 2020
Steady CFD simulations, which is based on Reynolds Average Navier-Stokes (RANS) approach, were conducted for a model of Horizontal Axis Wind Turbine (HAWT) and compared with experimental data in order to assess the accuracy of these models in simulating ...
Abd Elnaby Kabeel   +3 more
doaj   +1 more source

Comparative evaluation of RANS eddy-viscosity turbulence models for calculating the silicon melt convection in crystal growth systems

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2022
In the paper, the results of RANS calculations of turbulent convection in silicon melt, obtained using several eddy-viscosity turbulence models, have been compared with previously published ILES eddy-resolving calculation data for similar conditions.
Borisov Dmitry, Kalaev Vladimir
doaj   +1 more source

On bore dynamics and pressure:RANS, GN, and SV Equations [PDF]

open access: yes, 2020
Propagation and impact of two and three dimensional bores generated by breaking of a water reservoir is studies by use of three theoretical models.
Ertekin, R. Cengiz   +2 more
core   +2 more sources

Three-dimensional numerical analysis of a dam-break using OpenFOAM

open access: yesТруды Института системного программирования РАН, 2018
This paper presents a 3D numerical analysis of flow field patterns in a dam break laboratory scale by applying the numerical code based on Finite Volume Method (FVM), OpenFOAM.
E. Sánchez-Cordero   +2 more
doaj   +1 more source

Revisiting the Reynolds-averaged Navier–Stokes equations

open access: yesOpen Physics, 2022
This study revisits the Reynolds-averaged Navier–Stokes (RANS) equations and finds that the existing literature is erroneous regarding the primary unknowns and the number of independent unknowns in the RANS. The literature claims that the Reynolds stress
Sun Bohua
doaj   +1 more source

S-adenosyl-L-methionine: (S)-scoulerine 9-O-methyltransferase, a highly stereo- and regio-specific enzyme in tetrahydroprotoberberine biosynthesis [PDF]

open access: yes, 1985
Suspension cultures of Berberis species are useful sources for the detection and isolation of a new enzyme which transfers the methyl group from S-adenosyl-L-methionine specifically to the 9-position of the (S)-enantiomer of scoulerine, producing (S ...
CWW Beecher   +12 more
core   +1 more source

Comparison of experimental and numerical sloshing loads in partially filled tanks [PDF]

open access: yes, 2009
Sloshing phenomenon consists in the movement of liquids inside partially filled tanks, whichgenerates dynamic loads on the tank structure. Resulting impact pressures are of great importance in assessingstructural strength, and their correct evaluation ...
Brizzolara, S.   +9 more
core   +3 more sources

The electric field-induced antiferroelectric to ferroelectric phase transition in some (Pb,La)Zr0.55Ti0.45O3 ceramics [PDF]

open access: yes, 1976
Lanthanum substituted lead zirconate-titanate (PLZT) ceramics of composition 11.1/55/45 have been studied by measuring high electric field properties. Dc bias, dielectric and P-E hysteresis loop measurements have been employed to construct an E (electric
Burggraaf, A.J.   +2 more
core   +2 more sources

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