Instantaneous ultrasonic velocity profiling using in-situ sensor in real sewer flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00311267" target="_blank" >RIV/68407700:21110/16:00311267 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Instantaneous ultrasonic velocity profiling using in-situ sensor in real sewer flow

Popis výsledku v původním jazyce

The knowledge of flow and turbulence characteristics in open-channel flow is relevant for number of transport and transformation processes. Sewer flow hydrodynamics is relevant for assessment of transport of solute constituents and solid phase in both dry and wet weather flows. Surface runoff produces hydrographs in combined sewers with significant degree of flow dynamics and unsteadiness directly influencing solids transport. These processes may have significant environmental impacts on surface water quality and are of special interests. However, in-situ observations are rare because of missing measuring techniques and other constraints related to sewer environment. In this paper we present our first results from in-sewer flow and turbulence measurements using a multi-frequency acoustic Doppler velocity profiler, the UB-Flow sensor (Fa. Ubertone, France). The campaign is carried out in a trunk sewer of Dübendorf, Switzerland. We test the capabilities of UB-Flow sensor for short and long time measurements of velocity distribution and turbulence measurements with sampling frequencies from 50 to 100 Hz. We show the capabilities of the sensor to describe sewer flow hydrodynamics under different field conditions.

Název v anglickém jazyce

Instantaneous ultrasonic velocity profiling using in-situ sensor in real sewer flow

Popis výsledku anglicky

The knowledge of flow and turbulence characteristics in open-channel flow is relevant for number of transport and transformation processes. Sewer flow hydrodynamics is relevant for assessment of transport of solute constituents and solid phase in both dry and wet weather flows. Surface runoff produces hydrographs in combined sewers with significant degree of flow dynamics and unsteadiness directly influencing solids transport. These processes may have significant environmental impacts on surface water quality and are of special interests. However, in-situ observations are rare because of missing measuring techniques and other constraints related to sewer environment. In this paper we present our first results from in-sewer flow and turbulence measurements using a multi-frequency acoustic Doppler velocity profiler, the UB-Flow sensor (Fa. Ubertone, France). The campaign is carried out in a trunk sewer of Dübendorf, Switzerland. We test the capabilities of UB-Flow sensor for short and long time measurements of velocity distribution and turbulence measurements with sampling frequencies from 50 to 100 Hz. We show the capabilities of the sensor to describe sewer flow hydrodynamics under different field conditions.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů