Steady CFD simulation of central vortex formation at the free surface in the vessel without baffles stirred by impeller with three curved blades

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F14%3A00221328" target="_blank" >RIV/68407700:21220/14:00221328 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/14:00221522

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Steady CFD simulation of central vortex formation at the free surface in the vessel without baffles stirred by impeller with three curved blades

Popis výsledku v původním jazyce

This work deals with the numerical simulation of fluid flow (for tested case water was applied) in the vessel without baffles focusing on the creation of the vortex and its shape on the free surface. The vessel is stirred by impeller with three curved blades with particular geometry. CFD program ANSYS FLUENT is used for the simulations. Steady flow regime is assumed. SST k-omega and Reynolds Stress turbulent models are used for the simulation of turbulence and MRF approach is used for simulation of impeller motion. VOF model is used to solve multiphase flow. One geometry of stirred vessel without baffles is solved and the sensitivity analyses of mesh roughness were performed. Higher rotation speeds of 200, 250 and 300 rpm are set to establish a large central vortex. Further experiments were carried out with the same geometry. The shapes of vortices and flow fields are compared for different meshes and turbulent models. Furthermore, the value of power numbers and depth of vortices are c

Název v anglickém jazyce

Steady CFD simulation of central vortex formation at the free surface in the vessel without baffles stirred by impeller with three curved blades

Popis výsledku anglicky

This work deals with the numerical simulation of fluid flow (for tested case water was applied) in the vessel without baffles focusing on the creation of the vortex and its shape on the free surface. The vessel is stirred by impeller with three curved blades with particular geometry. CFD program ANSYS FLUENT is used for the simulations. Steady flow regime is assumed. SST k-omega and Reynolds Stress turbulent models are used for the simulation of turbulence and MRF approach is used for simulation of impeller motion. VOF model is used to solve multiphase flow. One geometry of stirred vessel without baffles is solved and the sensitivity analyses of mesh roughness were performed. Higher rotation speeds of 200, 250 and 300 rpm are set to establish a large central vortex. Further experiments were carried out with the same geometry. The shapes of vortices and flow fields are compared for different meshes and turbulent models. Furthermore, the value of power numbers and depth of vortices are c

Druh

O - Ostatní výsledky

CEP obor

JP - Průmyslové procesy a zpracování

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-18955S" target="_blank" >GA14-18955S: Experimentální a teoretická studie konvektivního přenosu tepla v rotujícím turbulentním impaktním proudu.</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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