Temat: velocity field - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Velocity Field Characteristics at the Inlet to a Pipe Culvert
Autorzy:: Kolerski, T.
Wielgat, P.
Powiązania:: https://bibliotekanauki.pl/articles/241162.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: Culvert
Acoustic Doppler Velocitymeter
velocity field
turbulence
Opis:: A poorly designed culvert inlet structure causes scouring, which can lead to the collapse of the culvert and significant damage to the neighboring land. A set of laboratory tests was evaluated to examine velocity distribution at the culvert inlet. A three-dimensional acoustic Doppler velocimeter was used to measure instantaneous flow velocity upstream of the culvert. The analysis of mean velocities, turbulence strength, and Reynolds stresses was performed to understand the flow structure near the culvert entrance.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2014, 61, 3-4; 127--140
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: The Simultaneous Occurrence of Logarithmic and S-Shaped Velocity Profiles in Gravel-Bed River Flows
Autorzy:: Franca, M. J.
Lemmin, U.
Powiązania:: https://bibliotekanauki.pl/articles/241179.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: field measurements
gravel-bed river flows
velocity profiles
Opis:: Based on Acoustic Doppler Velocity Profiler (ADVP) field measurements, we discuss velocity profiles observed in two shallow gravel-bed rivers with low relative submergence. In these flows, log-shaped profiles and s-shaped profiles simultaneously exist, indicating the possibility of 3D flow inside the roughness layer. A quasi-2D layer is generally found in an intermediate region of the flow above the roughness layer. Therefore a best-fit log-law approach may lead to estimates of a roughness parameter which are reasonably correlated with the local flow resistance. However, above a certain limit of the ratio roughness/water depth (∼0.6 from our measurements), the velocity distribution in the lower regions predominantly corresponds to an s-shaped profile.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2009, 56, 1-2; 29-41
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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