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Computational modeling and experimental results of high-frequency pulsations for model PSPP Dalešice
Report presents methodology for computation of high-frequency pressure pulsations, which is based on transfer matrix theory....
BK - Mechanika tekutin
- 2004 •
- Vx
Rok uplatnění
Vx - Nezařazeno - Výzkumná zpráva obsahující utajované informace (takový výsledek lze do RIV vložit pouze v případě, že zpráva obsahuje utajované informace a pole R12 = U), nebo souhrnná výzkumná zpráva
Enhancing of water jet effects by pulsations
of excitation and propagation of high-frequency pressure pulsations in liquid via high-pressure system and their influence on forming and properties of pulsating liquid jet are presented in the paper. Met...
BK - Mechanika tekutin
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
Influence of the Second Viscosity and Resistance of Guide Vanes on High-Frequency Pulsations in the System with Punp Turbine.
Computation of high-frequency pulsation of pressure and discharge for pump turbine model with penstock are presented Frequency-amplitude characteristics of pressure in two selected points in spiral casing and in ju...
BK - Mechanika tekutin
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
1-D MATHEMATICAL MODEL OF HIGH-FREQUENCY PULSATIONS
. 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 s...
BK - Mechanika tekutin
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
Numerical modeling of high-frequency pressure pulsations in mulstistage pump
Paper presents numerical simulations of unsteady flow in multistage pump. High-frequency pressure pulsations caused by rotor-stator interaction were modeled in 3D domain using CFD software. Results were compared with 1D met...
BK - Mechanika tekutin
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
Pulsations induced by roto-stator interaction: CFD vs. transfer matrix method
Rotor-stator interaction is a source of high-frequency pulsations. Presented paper focuses on simulation of these pulsations in low specific speed pump simulation in frequency domain. Three-dimensional uns...
BK - Mechanika tekutin
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
HIGH FREQUENSY PULSATIONS MODELING
This thesis is concentrated 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 prob...
BK - Mechanika tekutin
- 2009 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Research and development of pulsating water jets
of the process of excitation and propagation of high-frequency pressure pulsations in liquid via high-pressure system and their influence on forming and properties of pulsating liquid jet are presented in...
JQ - Strojní zařízení a nástroje
- 2009 •
- D
Rok uplatnění
D - Stať ve sborníku
Preparation of concrete substrate for repair by continuous and pulsating oscillating water jets
The water jet ability to remove selectively degraded material can be further improved by introducing high-frequency pressure pulsation into the jet. A series of experiments was realized to compare the effects of both pu...
JQ - Strojní zařízení a nástroje
- 2010 •
- D
Rok uplatnění
D - Stať ve sborníku
Simulation of transmission of pressure pulsations in high-pressure system
flow of compressible water in a high-pressure system equipped with an acoustic generator. The generator vibrates at frequency of 20 kHz with amplitude of 6 ?m. Acoustic waves (pressure pulsations), generated in water press...
JQ - Strojní zařízení a nástroje
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
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