1-D MATHEMATICAL MODEL OF HIGH-FREQUENCY PULSATIONS
Result description
. Paper is foccused on mathematical modeling of high frequency pulsations in pump turbines, which are the source of high-cycle continuous stress of the spiral casing cover, wicket gates and runner. The problem is solved by transfer matrix method. F-A char. and MS Excel programs have been used for data processing. Final results are presented by graphs of frequency-amplitude characteristic depending on running speed of motor, and plots of the pressure mode shape in selected phase shifts. Modeled variantsare those of runners with 7; 9 blades and 7 blades and 7 splitter blades. The number of wicket gates is 20.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
1-D MATHEMATICAL MODEL OF HIGH-FREQUENCY PULSATIONS
Original language description
. Paper is foccused on mathematical modeling of high frequency pulsations in pump turbines, which are the source of high-cycle continuous stress of the spiral casing cover, wicket gates and runner. The problem is solved by transfer matrix method. F-A char. and MS Excel programs have been used for data processing. Final results are presented by graphs of frequency-amplitude characteristic depending on running speed of motor, and plots of the pressure mode shape in selected phase shifts. Modeled variantsare those of runners with 7; 9 blades and 7 blades and 7 splitter blades. The number of wicket gates is 20.
Czech name
1-D Matematický model vysokofrekvenčních pulsací
Czech description
Vysokofrekvenční pulsace způsobují cyklické namáhání oběžného kola víka spirály. Tento problém je řešen pomocí přenosových matic, v programu F-Achar,MS Excel. Výsledky jednotlivých variant počtu lopat oběžného kola (7; 9; 7 a 7) jsou ve formě grafů frekvenčně amplitudových charakteristik a tvarů tlaku.
Classification
Type
D - Article in proceedings
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Result continuities
Project
GA101/06/0152: Unsteady Motion of a Body in a Liquid with Large Deformation of Boundaries
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Sborník Mechanical Engineering 2008
ISBN
978-80-227-2987-1
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
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Publisher name
STU Bratislava
Place of publication
Bratislava
Event location
Slovenská technická universita v Bratislavě
Event date
Nov 13, 2008
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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Basic information
Result type
D - Article in proceedings
CEP
BK - Liquid mechanics
Year of implementation
2008