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Modelling Flow Phenomena in Pump Station With Overflow
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SYSNO ASEP 0503344 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Modelling Flow Phenomena in Pump Station With Overflow Tvůrce(i) Sedlář, M. (CZ)
Příhoda, Jaromír (UT-L) RID, ORCID
Vyroubal, M. (CZ)Zdroj.dok. 2019 International Conference on Applied Mathematics, Modelling, Simulation and Optimization : AMMSO 2019. - Lancaster, Pennsylvania : DEStech Publications, 2019 - ISSN 2475-8841 - ISBN 978-1-60595-631-2 Rozsah stran s. 204-210 Poč.str. 7 s. Forma vydání Tištěná - P Akce 2019 International Conference on Applied Mathematics, Modelling, Simulation and Optimization (AMMSO2019) Datum konání 21.04.2019 - 22.04.2019 Místo konání Guilin Země CN - Čína Typ akce WRD Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova supercritical free-surface flow ; pump station ; overflow ; CFD ; DDES Vědní obor RIV BK - Mechanika tekutin Obor OECD Applied mechanics CEP FV30104 GA MPO - Ministerstvo průmyslu a obchodu Institucionální podpora UT-L - RVO:61388998 Anotace The paper deals with the numerical analysis of flow in a complete hydraulic system representing the pump station including the influence of the free water level. Particular attention is paid to the discharge object with overflow, which is characterized by the critical flow across the crown of the overflow wall. All basic calculations were accomplished by means of the commercial software ANSYS CFX and ANSYS Fluent with the SST turbulence model. As the flow in the discharge object represents the most interesting part of the results, additional numerical simulations of flow just inside this object were carried out with the DDES scale resolving simulations. Basic calculations inside the complete pump station passage gave surprisingly steady water level in both the intake and discharge objects. They also provided a good picture of the distribution of water velocity close to the water level and corresponding height of water level above the overflow wall crown. DDES simulations indicated a periodically formed vortex on a water level behind the overflow wall crown with the Strouhal number about 0.3. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2020
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