Results 1 to 10 of about 488,726 (317)
Quantum Dot-Based Optical Fiber Sensor for Flow Velocity Sensing at Low Initial Temperatures [PDF]
SensorsThe accurate monitoring of flow velocity is crucial in applications such as blood microcirculation and microfluidic systems. However, the high sensitivity of current hot wire flowmeters is often achieved at the expense of increasing the initial ...
Lei Sun +8 more
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Velocity distribution in a turbulent flow [PDF]
E3S Web of Conferences, 2021 The article considers the issue of velocity distribution in a turbulent flow. The logarithmic velocity profile obtained on the basis of semiempirical theory of turbulence by L. Prandtl is given.
Ignatenko Evgenii, Bryanskaya Yuliya
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On Molecular Flow Velocity Meters [PDF]
IEEE Transactions on Molecular, Biological and Multi-Scale Communications, 2021 Flow velocity is an important characteristic of the fluidic mediums. In this paper, we introduce a molecular based flow velocity meter consisting of a molecule releasing node and a receiver that counts these molecules. We consider both flow velocity detection and estimation problems, which are employed in different applications.
Maryam Farahnak-Ghazani +2 more
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Effect of flow velocity on downstream energy absorbers and velocity coefficient [PDF]
E3S Web of Conferences, 2023 As a result of designing an energy absorber in the zone of conjugation of water outlet structures of low-pressure and mediumpressure reservoirs, the stilling basin is not only under the influence of vertical hydrodynamic pressure with a variable value ...
Khidirov Sanatjon +5 more
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Coherence of Velocity Fluctuations in Turbulent Flows [PDF]
Physical Review Letters, 2022 We investigate the spatio-temporal quantity of coherence for turbulent velocity fluctuations at spatial distances of the order or larger than the integral length scale $l_{0}$. Using controlled laboratory experiments, an exponential decay as a function of distance is observed with a decay rate which depends on the flow properties.
Prabhudesai, Gaurav +3 more
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Temperature surpasses the effects of velocity and turbulence on swimming performance of two invasive non-native fish species [PDF]
Royal Society Open Science, 2021 Global climate change continues to impact fish habitat quality and biodiversity, especially in regard to the dynamics of invasive non-native species.
V. Muhawenimana +8 more
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Frontiers in Earth Science, 2021 To continuously monitor the discharge of the Yangtze River, two coastal acoustic tomography (CAT) systems with synchronized transmission were deployed at the Datong hydrometric station of the Yangtze River from July 2018 to January 2021.
Ze-Nan Zhu +14 more
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Ecohydrology: environmental flow and its driving factors
Shui kexue jinzhan, 2020 This paper discussed the general conceptions on environmental flow (e-flow). Emphasis was laid on relationship between the dynamic change of ecosystem and factors resulted by hydrological change especially by the change of flow velocity whereby to ...
Changming LIU, Baohui MEN, Changsen ZHAO
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Refinement of turbulent flow velocity characteristics [PDF]
Инженерно-строительный журнал, 2013 The basic laws of Prandtl semi-empirical turbulence theory were analyzed in the article. It was shown, that the Prandtl – Nikuradse logarithmic distribution of velocities are not strictly universal. The change of the first and second turbulence constants
Y.V. Bryanskaya
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Seasonal variation in the Chironomidae (Diptera) communities of two Faroese streams
CHIRONOMUS Journal of Chironomidae Research, 2023 Seasonal variation of freshwater invertebrate communities is strongly influenced by abiotic factors including temperature and precipitation which, in turn, are predicted to be affected by climate change. It is important to study these effects, not least
Leivur Janus Hansen +2 more
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