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Investigation and Modelling of Vortex Development and Gas Entrainment in Pump Intakes under Critical Inflow Conditions (Volume 6) (English shop)
Nicolai Sebastian Szeliga (Author)Preview
Table of Contents, PDF (550 KB)
Extract, PDF (1.3 MB)
| ISBN-13 (Hard Copy) | 9783736971899 |
| ISBN-13 (eBook) | 9783736961890 |
| Language | English |
| Page Number | 126 |
| Lamination of Cover | matt |
| Edition | 1. |
| Book Series | Berichte aus dem Institut für Mehrphasenströmungen |
| Volume | 6 |
| Publication Place | Göttingen |
| Place of Dissertation | Hamburg-Harburg |
| Publication Date | 2020-03-23 |
| General Categorization | Dissertation |
| Departments |
Technical mechanics
Security engineering Mechanical and process engineering Nuclear energy and reactor technology |
| Keywords | Wirbelbildung, Freier Oberflächenwirbel, Gasmitriss, Pumpeneinlauf, Wirbelbrecher, experimentell, großskalig, Modellierung, Zirkulation, Gashohlwirbel, Skalierung, Überdeckungshöhe, Einlaufgeometrien, Particle Image, Velocimetry, Burgers-Rott model, nukleare Sicherheit, Azimuthalgeschwindigkeit, Tangentialgeschwindigkeit, Gaskernlänge, kritische Einlaufbedingungen, Einlaufwinkel, Froude-Zahl, Wirbelverhinderung, eingebrachtes Moment, Validierung, Korrelationen, vortex development, free-surface vortex, gas-entrainment, pump intake, vortex breaker, experimental, large-scale, modeling, circulation, gas-core vortex, scaling, submergence depth, intake geometries, nuclear safety, azimuthal velocity, tangential velocity, gas-core length, critical inflow conditions, inflow angle, Froude number, vortex prevention, induced momentum, validation, correlations |
| URL to External Homepage | https://www.tuhh.de/ims/publications/dissertations.html |
Description
The occurrence of gas-entraining vortices in pump inlets of cooling water circuits poses a great threat for the reliable operation of power plants, water turbines and chemical reactors, due to the unpredictable operating behavior caused by gas accumulation in pumps and valves and due to long-term damage caused by cavitation. Since the formation and resulting strength of gas-core vortices depends in large parts on the circulation, caused by the pump intake geometry and on parameters of different scalability, the prediction of vortex development remains challenging for industrial scales. Therefore, the focus of this thesis is on the experimental investigation of induced circulation on the vortex formation in a large scale research setup under critical inflow conditions. For this purpose, vortex formation has been studied for varying circulations, submergence depths and intake geometries within a 50 m³ experimental vessel at the Hamburg University of Technology.
