نتایج جستجو برای: flow measurement

تعداد نتایج: 896243  

Journal: :Epj Web of Conferences 2022

Current methods for measuring fluid flow require a steady to achieve correct results. However, in practical applications, such place is often not available and the measurement results obtained do have required reliability further use. The project aims design methodology selected types of unsteady flow, focusing on conditions ventilation ducts. presented paper explains state art this field ident...

Journal: :The Journal of the Acoustical Society of America 1988

Journal: :Bulletin of the Korean society of Fisheries Technology 2008

Journal: :amirkabir international journal of modeling, identification, simulation & control 2014
mohammad amin tajeddini ali kamali

coriolis mass flow meters are one of the most accurate tools to measure the mass flow in the industry. however, two-phase mode (gas-liquid) may cause severe operating difficulties as well as decreasing certitude in measurement. this paper presents a method based on fuzzy systems to correct the error and improve the reliability of these sensors in the presence of two-phase model fluid. definite ...

Journal: :European heart journal cardiovascular Imaging 2014
S Muzzarelli P Monney K O'Brien F Faletra T Moccetti P Vogt J Schwitter

AIMS Bicuspid aortic valve (BAV) causes complex flow patterns in the ascending aorta (AAo), which may compromise the accuracy of flow measurement by phase-contrast magnetic resonance (PC-MR). Therefore, we aimed to assess and compare the accuracy of forward flow measurement in the AAo, where complex flow is more dominant in BAV patients, with flow quantification in the left ventricular outflow ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Journal: :Journal of biomedical optics 2007
Yimin Wang Bradley A Bower Joseph A Izatt Ou Tan David Huang

There is considerable interest in new methods for the assessment of retinal blood flow for the diagnosis of eye diseases. We present in vivo normal human volumetric retinal flow measurement using Fourier domain Doppler optical coherence tomography. We used a dual-plane scanning pattern to determine the angle between the blood flow and the scanning beam in order to measure total flow velocity. V...

Journal: :آب و خاک 0

abstract due to transmission losses and lack of initial flow, flood routing in ephemeral streams is not possible with common methods and it is necessary the flood routing models have been developed for these streams. therefore in this study a computer model for natural river cross section has been developed in that after linearization of partial differential equations of unsteady none uniform f...

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