Results 21 to 30 of about 4,512,917 (280)

Two-dimensional numerical studies of particle motion and deposition in the channel of diesel particulate filters

open access: yesRoyal Society Open Science, 2021
A numerical investigation on the soot laden flow of gas in a partial diesel particulate filter (PDPF) is presented based on solving the momentum equations for a continuous phase in the Euler frame and the motion equations for the dispersed phase in the ...
Xiaolong Wang, Yangbo Deng, Yang Liu
doaj   +1 more source

A Numerical study of resistance in a rough walled channel flow where the ratio of roughness length scale to the depth of flow varies over a wide range [PDF]

open access: yes, 2009
Numerical calculations were performed over a variety of two-dimensional rib roughness configurations in which the ratio of flow depth to roughness height was varied from 1.1 to 40.
Senior, A K
core   +7 more sources

Research on flow and heat transfer at different positions in CDPF channel based on three-dimensional thermal LBM

open access: yesCase Studies in Thermal Engineering, 2023
To explore the flow, heat transfer and oxidative regeneration mechanism of the porous media of the catalytic diesel particulate filter at the pore scale, catalytic diesel particulate filter and particulate layer structure were built using three ...
Jiawang Geng   +5 more
doaj   +1 more source

Large-Eddy Simulation of Flow Separation and Control on a Wall-Mounted Hump [PDF]

open access: yes, 2009
Active flow control techniques such as synthetic jets have been successful in increasing the performance of naturally separating flows on post-stall airfoils, bluff body shedding, and internal flows such as wide-angle diffusers.
Franck, Jennifer Ann
core   +1 more source

Hemodynamic Analysis of VenaTech Convertible Vena Cava Filter Using Computational Fluid Dynamics

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
The VenaTech convertible filter (VTCF) has been widely used as an inferior vena cava (IVC) filter to prevent fatal pulmonary embolism in patients. However, its hemodynamics that greatly affect the filter efficacy and IVC patency are still unclear.
Jingying Wang   +6 more
doaj   +1 more source

Comparing the effectiveness of negative-pressure barrier devices in providing air clearance to prevent aerosol transmission.

open access: yesPLoS ONE, 2021
PurposeTo investigate the effectiveness of aerosol clearance using an aerosol box, aerosol bag, wall suction, and a high-efficiency particulate air (HEPA) filter evacuator to prevent aerosol transmission.MethodsThe flow field was visualized using three ...
Tzu-Yao Hung   +7 more
doaj   +1 more source

Catalytic Wall Flow Filters for the Reduction of Biomass Boilers Emissions

open access: yesChemical Engineering Transactions, 2014
Biomass is worldwide available and the interest in it as energy source has been increased in the recent years, with the aim to reduce the fossil fuels dependence and to increase energy supply in developing countries. Nevertheless, biomass combustion emissions put some concerns for its environmental acceptance, particularly for carbon monoxide (CO ...
G. Stoppiello   +4 more
openaire   +3 more sources

Calibration of RANS model constant based on data assimilation and accurate simulation of separated flow

open access: yesAIP Advances, 2022
To improve the prediction accuracy of separated flow based on the Reynolds Averaged Navier–Stokes model, the model constants of the baseline Reynolds stress model are calibrated by the ensemble Kalman filter data assimilation method.
Xiliang Song   +3 more
doaj   +1 more source

Prediction of wall-bounded turbulence in a viscoelastic channel flow using convolutional neural networks

open access: yes, 2022
Turbulent flow of purely viscoelastic fluids has gained attention in the drag-reduction and flow control communities since a tiny amount of polymer has proven efficient in reducing friction drag in pipe flows.
Geetha Balasubramanian, Arivazhagan   +2 more
core   +3 more sources

Random pore structure and REV scale flow analysis of engine particulate filter based on LBM

open access: yesOpen Physics, 2020
In this article, lattice Boltzmann method (LBM) is used to simulate the multi-scale flow characteristics of the engine particulate filter at the pore scale and the representative elementary volume (REV) scale, respectively. Four kinds of random wall-pore
Wu Chunrui   +4 more
doaj   +1 more source

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