Results 1 to 10 of about 121,770 (267)

On construction of the canonical form on the frame bundle

open access: yesДифференциальная геометрия многообразий фигур, 2023
The detailed description of the construction of the canonical form on the higher order frame bundle over an n-dimensional smooth manifold is given. In particular, it is shown that some vector space isomorphism play­ing the key role in this construction ...
A. V. Kuleshov
doaj   +1 more source

Numerical Study on the Effect of Jet on the Operation of Powder Fuel Scramjet [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Metal powder fuel has high energy and volume calorific values, and it is an excellent power fuel for hypersonic aircraft in the future. However, metal powder has poor flow characteristics and is difficult to be effectively mixed with air when supersonic ...
H. M. Ding   +4 more
doaj   +1 more source

Overview regarding the certification of a new military jet aircraft for school and training [PDF]

open access: yesINCAS Bulletin, 2019
The requirements for designing a new Romanian school and training military jet, IAR 99 NG, are in line with the EMAR - European Military Airworthiness Requirement.
Ilie NICOLIN, Bogdan Adrian NICOLIN
doaj   +1 more source

Numerical Simulation of Blood Flow in Aortoiliac Bifurcation with Increasing Degree of Stenosis [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
The worldwide lethal prevalence of atherosclerotic diseases has made it a crucial topic of research, the descending aorta is a major artery with complex geometry involving curvature, branches, and bifurcation leading to common iliac arteries.
J. Harris, A. Paul, B. Ghosh
doaj   +1 more source

Validation of turbulence models for dense effluent discharged from circular and square nozzles with a discharge angle of 45 degrees [PDF]

open access: yesمهندسی عمران شریف, 2023
Today, due to the lack of potable water resources in different areas for urban and rural development, serious problems arise in the field of water resources management and supply.
V. Babaiynejad   +1 more
doaj   +1 more source

Flow characteristics of multiple round jets with square arrangement

open access: yesNihon Kikai Gakkai ronbunshu, 2022
The present paper describes the flow characteristics of multiple round air jets with square arrangement at a relatively low-Reynolds number (Re = 4.1×103). The diameter of a round nozzle was d = 6 mm.
Hiroshi TERAMOTO, Takahiro KIWATA
doaj   +1 more source

Validation of Integral and Turbulence Models for Saline Wastewater Discharged into the Sea Environment [PDF]

open access: yesآب و توسعه پایدار, 2023
With the reduction of natural sources of fresh water, the activity of desalination factories is increasing. The effluent of these factories is returned to the sea environment.
V. Babaiynejad, B. Khorsandi
doaj   +1 more source

Beads From A Necropolis Near Zaozernoe Village In North-Western Crimea: Morphology, Manufacturing Technology And Dating (Based On The Finds From The Excavations Of 1979−1985)

open access: yesАрхеология евразийских степей, 2021
The paper deals with the study of morphology (shape, decor, color, etc.) and manufacturing technology of beads and pendants found in several burials of a necropolis near the Zaozernoe village in North-Western Crimea.
Stolyarova Ekaterina K.
doaj   +1 more source

Numerical Simulation of Turbulent Reactive Jet in Liquid by the Semi-empirical PDF Method

open access: yesJournal of Fluid Science and Technology, 2006
Turbulent reactive jet in liquid has been simulated by the “semi-empirical” Lagrangian probability density function (PDF) method, by which the velocity field consistent to the specified moments of the Eulerian PDF of velocity can be ...
Takashi KUBO   +2 more
doaj   +1 more source

Behavior of Water Jet Accompanied with Air Suction

open access: yesJournal of Fluid Science and Technology, 2007
In order to atomize a liquid, the authors have investigated the behavior of air-water jets. In a series of experiments, we have discovered a strange phenomenon that the water jet accompanied with air suction from the free surface has made a periodic ...
Hironobu KAWAKAMI   +2 more
doaj   +1 more source

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