Results 21 to 30 of about 3,082,533 (152)

A Method for Determination of Pressure Drop in Caged-Ball and Caged-Disc Prosthetic Cardiac Valves

open access: yesJournal of King Saud University: Engineering Sciences, 1989
This paper describes a simple theoretical and experimental method to determine the pressure drop across mitral caged-ball and caged-disc prosthetic heart valves under steady state flow conditions.
Yosr A.M. Haggag
doaj   +1 more source

Pressure drop characteristics of reverse circulation pneumatic cuttings removal during coal seam drilling

open access: yesScience Progress, 2020
To solve the problems that the borehole depth is shallow and the drilling efficiency is low during the gas drainage drilling in soft coal seam with current cuttings removal method, a new technology of reverse circulation pneumatic cuttings removal is ...
Xiaoming Han, Songnan Song, Jialiang Li
doaj   +1 more source

Study on pressure drop prediction of BWR fuel assembly using CFD analysis

open access: yesNihon Kikai Gakkai ronbunshu, 2017
This paper presents the pressure drop prediction of BWR fuel assembly without experiment. To evaluate the core performance, pressure drop of fuel assembly is one of the key design parameters. The shape of fuel assembly is complicated and the spacer has a
Kojiro TADA, Shinichi MOROOKA
doaj   +1 more source

Pressure Drop in Capsule Transporting Bends Carrying Spherical Capsules [PDF]

open access: yes, 2012
One of the most important parameters in designing a capsule transporting pipeline is the pressure drop in the pipes carrying capsules and associated pipe fittings such as bends etc.
Ubbi, Kuldip   +3 more
core   +1 more source

Effect of Distribution Header Pressure Drop on Flow Distribution of Assembly for Sodium-cooled Fast Reactor

open access: yesYuanzineng kexue jishu
China is accelerating the development of sodium-cooled fast reactor technology. For nuclear reactors, whether it is a pressurized water reactor or a fast reactor, core flow distribution is a key concern, which directly determines whether the reactor can ...
LIN Chao, GAO Xinzhao, ZHOU Zhiwei, YU Xintai
doaj   +1 more source

Study on blockage after downward discharge of the molten metallic fuel with radiographic visualization

open access: yesNuclear Engineering and Technology, 2022
The downward discharge of the molten fuel to the lower structure of the fuel assembly could increase of the pressure drop and degrade of coolability of the assembly.
Min Ho Lee   +2 more
doaj   +1 more source

Modelling of solid flow effect on pressure drop in a vertical gas well

open access: yesPetroleum Exploration and Development, 2012
To predict bottom-hole pressure accurately and project the achievable production rate from a gas well with large accuracy, a modelling of solid flow effect on pressure drop in a vertical gas well is proposed.
Olufemi A Adekomaya
doaj   +1 more source

Study on the Effect of Structural and Working Parameters on the Back Pressure of Diesel Particulate Filter

open access: yesChemical Engineering Transactions, 2020
Diesel particulate filter is one of the most effective and direct methods to filter diesel particulate matter. Many factors affecting the efficiency and pressure of diesel particulate trap are studied in this paper.
Qirong Yang   +4 more
doaj   +1 more source

The spray characteristic of gas-liquid coaxial swirl injector by experiment

open access: yesMATEC Web of Conferences, 2017
Using the laser phase Doppler particle analyzer (PDPA), the spray characteristics of gas-liquid coaxial swirl injector were studied. The Sauter mean diameter (SMD), axial velocity and size data rate were measured under different gas injecting pressure ...
Chen Chen   +5 more
doaj   +1 more source

Analysis on hydraulic adaptability and pressure drop factors of low-pressure pipe network in coal-bed methane field

open access: yesAdvances in Mechanical Engineering, 2017
Because the coal-bed methane field is influenced by factors such as low pressure, slow velocity, terrain, and condensed water, which lead to the fact that the design is different from gathering design of conventional gas field, how to make full use of ...
Yang Yongan   +3 more
doaj   +1 more source

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