Results 61 to 70 of about 6,276,849 (205)

Numerical Study of Vortex Structure in the Shear Layer between Swirling Backflow and Axial Main Flow

open access: yesJournal of Fluid Science and Technology, 2007
The present paper treats the backflow vortex structure observed at the turbomachinery inlet at reduced flow rate. It is caused by the roll-up of the shear layer between swirling backflow and axial main flow.
Akihiro ISHIMARU   +3 more
doaj   +1 more source

LncRNA expression in idiopathic achalasia: New insight and preliminary exploration into pathogenesis

open access: yesOpen Medicine, 2022
Idiopathic achalasia is a primary esophageal motility disorder characterized by the absence of esophageal peristalsis and impaired relaxation of the lower esophageal sphincter (LES). However, the pathogenesis of idiopathic achalasia remains unclear.
Lu Chao   +4 more
doaj   +1 more source

Large-scale LES analysis for aerodynamics of a group of racing bicycles by lattice Boltzmann method

open access: yesNihon Kikai Gakkai ronbunshu, 2019
We implement and perform large-scale LES analysis for running groups of cyclists. The mesh-refined lattice Boltzmann method (LBM) and coherent-structure Smagorinsky model (CSM) are adopted for the simulations to achieve a high performance computing on ...
Yuta HASEGAWA   +3 more
doaj   +1 more source

Investigation of temporal variation of combustion instability intensity in a back step combustor using LES

open access: yesJournal of Thermal Science and Technology, 2020
Lean combustion is susceptible to combustion instabilities, especially pressure oscillation, and this severely damages the combustor. To prevent this, many studies have attempted to elucidate this phenomenon.
Jun NAGAO   +2 more
doaj   +1 more source

Thermo-hydraulic effects of vortex generator pairs in a crossflow channel with a transverse-jet flow

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
The use ofpassive obstacles to control the hydraulic and thermal behavior of fluids is anapplication in many industrial mechanisms. In this study, flow and thermaloscillation behaviors in a crossflow channel with a transverse jet flow wereinvestigated ...
Beşir Kok
doaj   +1 more source

Območje pristanišča v Navportu

open access: yesArheološki Vestnik, 2016
Zaščitna raziskovanja leta 2007 so potekala na bregu reke Ljubljanice in v jugozahodnem vogalu rimske naselbine Nauportus na Dolgih njivah na Vrhniki. Iz časa od 4./3. st. do sredine 1. st. pr. Kr.
Jana Horvat   +3 more
doaj  

Geometry factor obtained from wall heat transfer coefficient in high Reynolds number elbow flow

open access: yesNihon Kikai Gakkai ronbunshu, 2018
Flow accelerated corrosion (FAC) is one of the causes for wall thinning mechanisms in carbon steel pipes. Prediction of geometry factor is the key elements for estimation of FAC.
Tatsuya TSUNEYOSHI   +2 more
doaj   +1 more source

Le contexte, les partenaires et le processus : les contraintes éthiques dans les recherches collaboratives

open access: yes, 2020
info:eu-repo/semantics ...
Genard, Jean Louis   +3 more
openaire   +3 more sources

Evaluation of the Urban Climate Model PALM-4U over Hilly Terrain Using Wind and Turbulence Observations

open access: yesMeteorologische Zeitschrift
We used boundary layer observations in the Stuttgart area from two summer episodes for model evaluation of the urban climate model PALM-4U. In summer 2017, radiosondes and Doppler lidars were operated, and the lidar virtual tower technique was applied to
Olga Kiseleva   +4 more
doaj   +1 more source

Numerical investigation on characteristics of separation vortices between blades of two-dimensional cascade

open access: yesNihon Kikai Gakkai ronbunshu
In this study, LES calculations by OpenFOAM were performed using five blade models with different blade thicknesses (original, quarter, half, 3-quarters, and filled) to investigate the characteristics of separated and reattaching flow between blades of ...
Kosuke SETO   +5 more
doaj   +1 more source

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