Project detail

Shape Optimization of the Diffuser with Inlet Circumferential Velocity Component

Duration: 01.01.2006 — 31.12.2008

Funding resources

Czech Science Foundation - Postdoktorandské granty

- whole funder (2006-01-01 - 2008-12-31)

On the project

Návrh optimálního tvaru površky difuzoru pro proudění s obvodovou složkou rychlosti tak, aby byla dosažena maximální regenerace tlaku. Návrh je založen na metodách matematické optimalizace a teoretické analýze struktury a stability proudění.

Description in English
Design of the optimum diffuser shape for the flow with circumferential velocity component to achieve maximum pressure recovery. Design is based on methods of mathematical optimization and theoretical investigation of the flow structure and stability. Final solution is experiemntally verified. Obtained results are valuable for design of fluid elements and machines.

Keywords
difuzor, optimalizace, vír

Key words in English
diffuser; optimization; vortex

Mark

GP101/06/P190

Default language

Czech

People responsible

Rudolf Pavel, doc. Ing., Ph.D. - principal person responsible

Units

Victor Kaplan Dept. of Fluid Engineering
- beneficiary (2006-01-01 - 2008-12-31)

Results

ZUBÍK, P. LDA měření za generátorem rotace. In 21th Symposium on Anemometry. Praha: Ústav hydrodynamiky AVČR, 2007. s. 171-176. ISBN: 978-80-87117-01-9.
Detail

RUDOLF, P. Velocity profile influence on spiral vortex breakdown in diffuser. Manchester: University of Manchester, 2008.
Detail

KOUTNÍK, J.; POCHYLÝ, F.; RUDOLF, P.; HABÁN, V. On cavitating vortex rope form stability during Francis turbine part load operation. In Proccedings of abstracts Int. Meetings of the Work Group on “ Cavitation and Dynamics Problems in Hydraulic Machinery and Systems”. Barcelona (Spain): UPC Barcelona, 2006. p. 11 ( p.)
Detail

RUDOLF, P., LICHTNEGER, P. Unsteady Characteristics of Sudden Expansion Flow. In 12. uživatelská konference FLUENT 2006. Hrotovice: Techsoft Engineering s.r.o., Praha, 2006. p. 213 ( p.)ISBN: 80-239-7211-1.
Detail

RUDOLF, P. Optimization Methods for Hydraulic Machines Design-Shape Optimization of Swirl Turbine Draft Tube. In 18. medzinárodna konferencia "O využití vodnej energie". Vyhne: Slovenské elektrárne,a.s., 2006. p. 39 ( p.)
Detail

RUDOLF, P.; HABÁN, V.; POCHYLÝ, F. Model of Pressure Pulsations in Hydraulic Turbine Draft Tube Based on Linearized Rayleigh-Plesset Equation. In Proceedings of abstracts "International Meeting of the Work Group Cavitation and Dynamic Problems in Hydraulic Machienry and Systems. Barcelona (Spain): 2006. p. 45 ( p.)
Detail

RUDOLF, P.; NĚMEC, T. Performance Improvement of a Short Draft Tube. In Sborník konference Power system engineering, thermodynamics and fluid flow 2008. Plzeň: University of West Bohemia, 2008. p. 201-208. ISBN: 978-80-7043-665-3.
Detail

RUDOLF, P. Možnosti matematického modelování proudění kapalin. In Sborník konference Metrologie průtoku 2008. Brno: Český metrologický institut, 2008. s. 245-254. ISBN: 978-80-254-2196-3.
Detail

RUDOLF, P. Simulation of vortex breakdown in an enclosed cylinder as a preliminary study of the draft tube vortex rope creation. In Proceedings of the 6th IASME/WSEAS International Conference on Fluid MEchanics and Aerodynamics. Rhodes, Greece: WSEAS Press, 2008. p. 147-151. ISBN: 978-960-6766-98-5.
Detail

ZUBÍK, P. PIV měření velmi nízkých rychlostí. In 23rd symposium on anemometry. 2009. s. 116-119. ISBN: 978-80-87117-06-4.
Detail

RUDOLF, P.; DESOVÁ, M. Flow Characteristics of Curved Ducts. Applied andComputational Mechanics, 2007, vol. 1, no. 1, p. 255-265. ISSN: 1802-680X.
Detail

RUDOLF, P.; HABÁN, V.; POCHYLÝ, F.; KOUTNÍK, J.; KRÜGER, K. Collapse of cylindrical region and conditions for existence of elliptical vortex form of cavitating vortex rope. Scientific Bulletin of the "Politehnica" University of Timisoara, 2007, vol. 52, no. 6, p. 109-118. ISSN: 1224-6077.
Detail

RUDOLF, P. Connection between inlet velocity field and diffuser flow instability. Applied andComputational Mechanics, 2009, vol. 3, no. 1, p. 177-184. ISSN: 1802-680X.
Detail

POCHYLÝ, F.; RUDOLF, P.; HABÁN, V. Cavitating vortex rope. Brno: 2006.
Detail

RUDOLF, P. Modeling of Cavitating Flow. In Sborník konference POWER SYSTEM ENGINEERING, THERMODYNAMICS&FLUID FLOW 2007. Plzeň: ZČU Plzeň, 2007. p. 30-38. ISBN: 978-80-7043-542-7.
Detail

Responsibility: Rudolf Pavel, doc. Ing., Ph.D.