Approximation of velocity distribution in open channel flow

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F10%3A00342976" target="_blank" >RIV/67985874:_____/10:00342976 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Approximation of velocity distribution in open channel flow
Original language description
The paper deals with approximation of spatial distribution of mean downstream velocity of sub-critical turbulent flow in an open rectangular channel with rough bed. New formulae of the local downstream velocity component Vx(y, z) dependence on the vertical coordinate y and lateral coordinate z were introduced. The vertical velocity profile was approximated by log-law and the power law was used to describe the effect of channel walls on the horizontal velocity profile. The suggested formulae of spatial downstream velocity component distribution were calibrated and verified using the experimental data obtained by PIV method. The proposed approximation is in good agreement with experimental data, the difference between experimental and calculated data isin range of 5 - 10% except the area near the channel?s corners and water level, where the maximal difference reaches 60% and 30% of experimental values, respectively.
Czech name
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Czech description
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Project
<a href="/en/project/GA103%2F09%2F1718" target="_blank" >GA103/09/1718: Numerical model of the bed load transport of particle and cluster of particles under variable flow conditions in a channel</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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