Results 31 to 40 of about 117,677 (282)

Physical and numerical modeling for the investigation of downstream scour caused by sudden blockage in circular and box culvert inlets [PDF]

Journal of Applied Research in Water and Wastewater
This paper presents a comprehensive experimental and numerical study using non-cohesive uniform sand (d50 = 2 mm). The study investigates the impact of local scour downstream of four model culverts with different barrel shapes and inlet blockage sizes ...
Saeed Gohari, Somayeh Karimpour
doaj   +1 more source

Análisis numérico 3D de las características del flujo en un canal curvo

Ingeniería del Agua, 2020
El presente trabajo muestra un análisis numérico 3D del comportamiento del flujo de agua en un canal curvo influenciado por la presencia de un vertedero y una compuerta.
E. Sánchez-Cordero, M. Gómez, E. Bladé   +2 more
doaj   +1 more source

RANS Turbulence Model Development using CFD-Driven Machine Learning

, 2020
This paper presents a novel CFD-driven machine learning framework to develop Reynolds-averaged Navier-Stokes (RANS) models. The CFD-driven training is an extension of the gene expression programming method (Weatheritt and Sandberg, 2016), but crucially ...
Akolekar, Harshal D., Michelassi, Vittorio, Sandberg, Richard D., Weatheritt, Jack, Zhao, Yaomin   +4 more
core   +1 more source

We Ran One Regression* [PDF]

Oxford Bulletin of Economics and Statistics, 2004
AbstractThe controversy over the selection of ‘growth regressions’ was precipitated by some remarkably numerous ‘estimation’ strategies, including two million regressions by Sala‐i‐Martin [American Economic Review(1997b) Vol. 87, pp. 178–183]. Only one regression is really needed, namely the general unrestricted model, appropriately reduced to a ...
David Hendry, Hans-Martin Krolzig
openaire   +4 more sources

Comparison of Different Turbulent Models in Flow on a Rotating Airfoil Considering Centrifugal Acceleration Force, Coriolis Force and Thermal Dissipation [PDF]

Journal of Heat and Mass Transfer Research
The moving blades in a circular path have many industrial applications, in more modern turbo machines, such as jet engine compressors, the flow conditions are completely incompressible.
Iraj Fazeli Farsani, Bahman Asadi
doaj   +1 more source

NUMERICAL STUDY ON PROPULSIVE FACTORS IN REGULAR HEAD AND OBLIQUE WAVES

Brodogradnja, 2022
This paper applies Reynolds-averaged Navier-Stokes (RANS) method to study propulsion performance in head and oblique waves. Finite volume method (FVM) is employed to discretize the governing equations and SST k-ω model is used for modeling the turbulent ...
Kun Dai, Yunbo Li, Jiaye Gong, Zheng Fu, Ang Li, Dapeng Zhang   +5 more
doaj   +1 more source

A New Scientific Paradigm as a key to Building a Community with a Common Future for Humanity

Cadmus, 2020
The major idea of this article is that for a scientifically based understanding of possible future for humanity we need a new knowledge of regularities for its development.
Valentina M. Bondarenko
doaj  

Walks on Apollonian networks

, 2006
We carry out comparative studies of random walks on deterministic Apollonian networks (DANs) and random Apollonian networks (RANs). We perform computer simulations for the mean first passage time, the average return time, the mean-square displacement ...
Adamic, Albert, Albert, Almaas, Amit, Andrade, Andrade, Barabási, Barahona, Boyd, Callaway, Dorogovtsev, Doye, Gallos, Guimerá, Holme, Jespersen, Lahtinen, Majid, Newman, Noh, Pandit, Parris, Pastor-Satorras, Strogatz, Tadić, Watts, X.-J. Xu, Y.-H. Wang, Yang, Z.-G. Huang, Z.-X. Wu, Zhou   +32 more
core   +1 more source

LES-based investigation on external heat transfer characteristics of turbine blades for gas turbine (About the effect of turbine blades configuration)

Nihon Kikai Gakkai ronbunshu, 2015
Accurate prediction of external heat transfer around a turbine is important in high efficiency gas turbine development. Experimental and computational fluid dynamics studies were performed to investigate the heat transfer characteristics around two types
Masahide KAZARI, Takeshi HORIUCHI, Ken-ichi FUNAZAKI   +2 more
doaj   +1 more source

Numerical Modelling of Wind Flow In Street Canyon Between High-Rise Buildings with Angle of Attack Modifications

Media Komunikasi Teknik Sipil, 2023
In fluid dynamics analysis, one of the things to do is to perform numerical modeling validated on the results of experimentation. In numerical modeling of wind flow there are several forms of modeling used including RANS, LES, DNS, etc.
Doni Priambodo, Yongky Sanjaya, Prasanti Widyasih Sarli, Herlien Dwiarti Setio   +3 more
doaj   +1 more source