All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Stability of Q-Y characteristic of centrifugal pump

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F09%3APU80648" target="_blank" >RIV/00216305:26210/09:PU80648 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Stability of Q-Y characteristic of centrifugal pump

  • Original language description

    At the pumps of low specific speed it is possible, that near the point of zero discharge the Q-Y characteristic is unstable. This phenomenon of unstable Q-Y characteristic causes big pressures and discharge pulsations, which are characterized by self- excited oscillations of the systems. It is not recommended to run the pump between points of unstable characteristic. For this pump it is impossible to work in exacting operations (atomic power stations, heating plant stations, chemical industry). The stability conditions (Y,Q) are analyzed on the basis of dissipation function. It is assumed, that power input of the pump is linear function of the discharge.

  • Czech name

    Stabilita Q-Y charakteristiky odstředivého čerpadla

  • Czech description

    U čerpadel s nízkými specifickými otáčkami bývá Q-Y charakteristika v blízkosti závěrného bodu nestabilní. Tento jev způsobuje velké tlakové a průtokové pulsace, které jsou typické vznikem samobuzeného kmitaní v systému. Nedoporučuje se provozovat čerpadlo oblasti nestability. Průběh nestability je analyzován na základě průběhu disipační funkce. Předpokladem je lineární závislost výkonu na průtoku.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BK - Liquid mechanics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA101%2F09%2F1715" target="_blank" >GA101/09/1715: Cavitating vortical structures induced by rotation of liquid</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2009

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    Engineering Mechanics 2009 - book of extended abstracts

  • ISBN

    978-80-86246-35-2

  • ISSN

  • e-ISSN

  • Number of pages

    8

  • Pages from-to

  • Publisher name

    Akademoie věd České republiky

  • Place of publication

    Praha

  • Event location

    Svratka

  • Event date

    May 11, 2009

  • Type of event by nationality

    EUR - Evropská akce

  • UT code for WoS article