Results 11 to 20 of about 20,987 (146)

Maneuvering Hydrodynamic Forces Acting on Manta-type UUV Using CFD

한국해양공학회지, 2020
In this study, we investigate surge force, heave force, and pitch moment, which are vertical plane hydrodynamics acting on Manta-type unmanned underwater vehicles (UUVs), using a model test and computational fluid dynamics (CFD) simulation. Assessing the
Seong-Eun Lee, Sung-Wook Lee, Jun-Young Bae   +2 more
doaj   +1 more source

Numerical investigation of air-entrainment in skimming flow over stepped spillways

Theoretical and Applied Mechanics Letters, 2016
As a widely used flood energy dissipator, the stepped spillway can significantly dissipate the kinetic or hydraulic energy due to the air-entrainment in skimming flow over the steps.
Jiemin Zhan, Jianbo Zhang, Yejun Gong
doaj   +1 more source

A Mapping Model of Propeller RANS and LES Flow Fields Based on Deep Learning Methods

Applied Sciences, 2023
In this work, we propose a deep-learning-based mapping model for simulating and predicting the flow field of Reynolds-averaged Navier–Stokes (RANS) and large eddy simulation (LES) of propellers.
Jianhai Jin, Yuhuang Ye, Xiaohe Li, Liang Li, Min Shan, Jun Sun   +5 more
doaj   +1 more source

ACAT1 Benchmark of RANS-Informed Analytical Methods for Fan Broadband Noise Prediction—Part I—Influence of the RANS Simulation

Acoustics, 2020
A benchmark of Reynolds-Averaged Navier-Stokes (RANS)-informed analytical methods, which are attractive for predicting fan broadband noise, was conducted within the framework of the European project TurboNoiseBB.
Carolin Kissner, Sébastien Guérin, Pascal Seeler, Mattias Billson, Paruchuri Chaitanya, Pedro Carrasco Laraña, Hélène de Laborderie, Benjamin François, Katharina Lefarth, Danny Lewis, Gonzalo Montero Villar, Thomas Nodé-Langlois   +11 more
doaj   +1 more source

Anisotropic Organised Eddy Simulation for the prediction of non-equilibrium turbulent flows around bodies [PDF]

, 2008
The unsteady turbulent flow around bodies at high Reynolds number is predicted by an anisotropic eddy-viscosity model in the context of the Organised Eddy Simulation (OES).
Bourguet, Rémi, Braza, Marianna, El Akoury, Rajaa, Harran, Gilles   +3 more
core   +2 more sources

Progress in RANS-based local correlation transition models for hypersonic flows: A review [PDF]

International Journal of Fluid Engineering
Precise estimation of the location and magnitude of boundary layer transition is essential for the exact computation of aero-thermodynamics and the performance of hypersonic vehicles. Compared with resource-intensive methods such as large eddy simulation,
DiviaHarshaVardini R C, Ikhyun Kim
doaj   +1 more source

Multi-fidelity modelling of shark skin denticle flows: insights into drag generation mechanisms

Royal Society Open Science, 2023
We investigate the flow over smooth (non-ribletted) shark skin denticles in an open-channel flow using direct numerical simulation (DNS) and two Reynolds averaged Navier–Stokes (RANS) closures. Large peaks in pressure and viscous drag are observed at the
C. J. Lloyd, K. Mittal, S. Dutta, R. M. Dorrell, J. Peakall, G. M. Keevil, A. D. Burns   +6 more
doaj   +1 more source

CFDNet: a deep learning-based accelerator for fluid simulations

, 2020
CFD is widely used in physical system design and optimization, where it is used to predict engineering quantities of interest, such as the lift on a plane wing or the drag on a motor vehicle.
Chandramowlishwaran, Aparna, Malaya, Nicholas, Obiols-Sales, Octavi, Vishnu, Abhinav   +3 more
core   +1 more source

Experimental Validation of Fluid–Structure Interaction Computations of Flexible Composite Propellers in Open Water Conditions Using BEM-FEM and RANS-FEM Methods

Journal of Marine Science and Engineering, 2018
In the past several decades, many papers have been published on fluid–structure coupled calculations to analyse the hydro-elastic response of flexible (composite) propellers.
Pieter Maljaars, Laurette Bronswijk, Jaap Windt, Nicola Grasso, Mirek Kaminski   +4 more
doaj   +1 more source

Experimental and Numerical Studies of the Aerodynamics of Stationary Two-Shaft Gas Turbine Exhaust System

Energies, 2023
In this study, the aerodynamic performance of the exhaust system of a two-shaft gas turbine was investigated experimentally and numerically. The investigation focused on the system “Turbine Stage-Diffuser—Collector Box” and aimed to examine the impact of
Viktor Chernikov, Elena Semakina
doaj   +1 more source