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Performance Improvement of a Short Draft Tube
very good pressure recovery.
BK - Mechanika tekutin
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
A note on influence of velocity field on stability of the flow in axisymmetric domain with focus on origin of the cavitating vortex rope
and pressure field leading to a cavitating vortex rope.Swirling flow is very susceptible to instabilities, which often manifested by appearance of concentrated vertical structure - vortex rope. Basic anal...
BK - Mechanika tekutin
- 2009 •
- D
Rok uplatnění
D - Stať ve sborníku
Structure of Flow Fields Downstream of Two Different Swirll Generators
are correlated with the structure of the vortex rope. Difference in excited pressure pulsations is illustrated on amplitudefrequency spectra of static wall pressure.), which undergoes breakdown into vortex
JE - Nejaderná energetika, spotřeba a užití energie
- 2012 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Structure of Flow Fields Downstream of Two Different Swirl Generators
are correlated with thestructure of the vortex rope. Difference in excited pressure pulsations is illustrated on amplitude-frequency spectra of static wall pressure.), which undergoes breakdown into vortex
BK - Mechanika tekutin
- 2014 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Collapse of cylindrical region and conditions for existence of elliptical vortex form of cavitating vortex rope
cylindrical vortex rope under the impact of unsteady outside pressure field has beenConditions for existence of cavitating vortex rope with elliptical cross-section are derived using Lagrangian coordinate...
JE - Nejaderná energetika, spotřeba a užití energie
- 2007 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Connection between inlet velocity field and diffuser flow instability
and magnitudes of pressure pulsations of the rotating vortex rope were recorded. Two typesof vortices were detected. The first one is a thin vortex with higher frequency and relatively low pressure amplit...
BK - Mechanika tekutin
- 2009 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Stability of Infinitely Long Asymmetrical Vortex Rope
Eigen value analysis of cavitating vortex rope motion was carried out. Analysis. Instability, which depends on angular velocity of the fluid rotation and radii of vortex rope and draft tube, is judged according to ...
BK - Mechanika tekutin
- 2007 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Experimental investigation of swirl number influence on spiral vortex structure dynamics
of different forms of vortex structures in the Francis turbine draft tube, e.g. spiral or straight vortex rope at part load or full load respectively. Independently on the vortex rope shape the unsteady <...
Mechanical engineering
- 2021 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
On the existence of adverse pressure gradient in decelerated swirling flow and its suppression by water jet injection
pressure gradient by water jet injection. On a case with a strong swirl intensity leading to a strong vortex rope, it is shown that the injected jet may be deflected the presence of adverse pressure gradient at th...
Applied mechanics
- 2022 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Fourbladed micromixer
Micromixer is based on vortex rope principle. Liquid enters through conical section to radial fourbladed runner, which induces swriling flow in the downstream diffuser. Vortex rope arises as an instability of the s...
BK - Mechanika tekutin
- 2013 •
- Gfunk
Rok uplatnění
Gfunk - Funkční vzorek
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