## Department of Power Engineering Equipment

# Experimental fluid mechanics 2013

# 19.11.2013 - 22.11.2013

Kutná Hora (Czech Republic)

### Contents

## Keynote lecture |
Page |

High dynamic range particle image velocimetry applied to heat convection studiesT. Persoons |
11 |

Combining the merits of experiments and numerics in flow stability analysisR. de Lange |
21 |

Wind-load, pressure and velocity measurements: post processing and discussionMd. M. Alam |
29 |

## Contributions |
Page |

Contactless pressing of a sheetK. Adámek, J. Žák, P. Kavan, P. Šidlof, J. Kolář |
37 |

CFD analysis of wing trailing edge vortex generator using serrationsH. A. Alawadhi, A. G. Alex, Y. H. Kim |
47 |

Turbulent flow computation in a circular U-BendM. Aounallah, M. Belkadi, L. Adjlout, O. Imine, B. Imine |
55 |

Parametric investigation of boundary layer control using triangular micro vortex generatorsM. Bagheri, M. Al Muslmani, A. Masood, M. Khosravi, M. A. Mahmoud, A. Cardoz, A. Akkuwari, Y. Alanezi, Y. Kim |
61 |

Turbulent slurry flow measurement using ultrasonic Doppler method in rectangular pipeV. Bareš, J. Krupička, T. Picek, J. Brabec, V. Matoušek |
71 |

A detection of the coarse water droplets in steam turbinesO. Bartoš, X. Cai, M. Kolovratník |
77 |

Comparison of methods for evaluation of aerosol deposition in the model of human lungsM. Belka, J. Lippay, F. Lizal, J. Jedelsky, M. Jicha |
82 |

On the near field behavior of inclined negatively buoyant jetsL.A. Besalduch, M.G. Badas, S. Ferrari, G. Querzoli |
86 |

Detection of damage of a filter by visualization of filtration processP. Bílek, P. Šidlof |
92 |

Investigation of the influence of radial grooves on the flow in an eccentrically deposited annulus using CFD numerical simulationM. Bojko, M. Kozubková, M. Kozdera, O. Zavila |
100 |

Measurements of a single pulse impinging jet. A CFD referenceM. Bovo, B. Rojo, M. Golubev |
106 |

Bubble dynamics in drinksZ. Broučková, Z. Trávníček, P. Šafařík |
114 |

Influence of the ambient temperature during heat pipe manufacturing on its function and heat transport abilityA. Čaja, P. Nemec, M. Malcho |
119 |

An accurate quantification of the flow structure along the acoustic signal cycle in a forced two-phase jetE. Calvo Bernad, J. A. García Rodríguez, J. L. Santolaya Sáenz, L. A. Aísa Miguel, J. I. García Palacín |
123 |

Wake structures of two side by side spheres in a tripped boundary layer flowE. Canli, M. Özgören, S. Dogan, M. Hilmi Aksoy, H. Akilli |
131 |

The discontinuous Galerkin method for the numerical simulation of compressible viscous flowJ. Česenek |
142 |

1D models of the thermohydraulic systems supported by CFD results and measured dataV. Čibera, D. Lávička, J. Kňourek |
148 |

Measurement of heat transfer coefficient using termoanemometry methodsP. Dančová, P. Sitek, T. Vít |
152 |

Application of a pressure based CFD code with mass transfer model based on the Rayleigh equation for the numerical simulation of the cavitating flow around a hydrofoil with circular leading edgeCh. Deimel, M. Günther, R. Skoda |
156 |

The influence of numerical models on determining the drag coefficientJ. Dobeš, M. Kozubková |
164 |

Simulation of saltation motion using LBE based methodsJ. Dolanský |
170 |

Flow rate measurement in aggressive conductive fluidsN. Dubovikova, Y. Kolesnikov, Chr. Karcher |
178 |

Heat exchanger design for hot air ericsson-brayton piston engineP. Ďurčanský, R. Lenhard, J. Jandačka |
183 |

Counter-Flow Cooling Tower Test CellL. Dvořák, J. Nožička |
187 |

The influence of boundary conditions to the flow through model of upper part of human respiratory systemJ. Elcner, M. Chovancova, M. Jicha |
192 |

Experimental investigation of fluid flow in horizontal pipes system of various cross-section geometriesE. Farsirotou, D. Kasiteropoulou, D. Stamatopoulou |
196 |

Effect of car speed on amount of air supplied by ventilation system to the space of car cabinJ. Fišer, J. Pokorný |
201 |

Mathematical Modeling of Diaphragm Pneumatic MotorsK. Fojtášek, L. Dvořák |
205 |

Bubble shape and breakage events in a vertical pipe at the boiler flow lineA. Fsadni, Y. Ge |
211 |

Modelling of natural and bypass transition in aerodynamicsJ. Fürst, P. Straka, J. Příhoda |
217 |

Experimental investigations of the steady flow through an idealized model of a femoral artery bypassC. Giurgea, F. Bode, O. I. Budiu, L. Nascutiu, D. Banyai, M. Damian |
223 |

Modelling of airflow in a closed simulation box with regard to atmospheric optical linkL. Hajek, J. Latal, M. Bojko, R. Poboril, P. Koudelka, J. Vitasek, P. Siska, V. Vasinek |
232 |

Contact-free measurement of the flow field of a liquid metal inside a closed containerCh. Heinicke |
239 |

Single phase heat transfer in minichannelsJ. Hejcik, M. Jicha |
243 |

Computation of water hammer protection of modernized pumping stationD. Himr |
247 |

A measuring stand for a ducted fan aircraft propulsion unitD. Hlaváček |
253 |

Application of adjustment calculus in the nodeless Trefftz method for a problem of two-dimensional temperature field of the boiling liquid flowing in a minichannelS. Hozejowska, B. Maciejewska, L. Hozejowski |
261 |

Numerical modelling of temperature fields in the flow boiling liquid through a vertical minichannel with an enhanced heating surfaceS. Hozejowska, M. Piasecka |
265 |

Identification of relaxation parameter of a physical model of vein from fluid transient experimentD. Hromádka, H. Chlup, R. Žitný |
273 |

Analytical description of thermodynamic properties of steam, water and the phase interface for use in CFDJ. Hrubý, M. Duška |
279 |

Measurement and evaluation of static characteristics of rotary hydraulic motorL. Hružík, M. Vašina, A. Bureček |
285 |

Non-stationary flow of hydraulic oil in long pipeL. Hružík, A. Bureček, M. Vašina |
290 |

Numerical solution of subsonic and transonic flows in 2D and 3DJ. Huml, K. Kozel |
295 |

Concept of CFD model of natural draft wet-cooling tower flowT. Hyhlík |
300 |

Sudden releases of gasesH. Chaloupecká, Z. Jaňour, K. Jurčáková, L. Kukačka, Š. Nosek |
306 |

Experimental investigation of stabilization of flowing water temperature with a water-PCM heat exchangerP. Charvat, J. Stetina, O. Pech, L. Klimes, M. Ostry |
312 |

The pressure gradient in the human respiratory tractM. Chovancová, J. Elcner |
316 |

Compressibility of the fluidJ. Jablonská |
322 |

The estimation of dynamic contact angle of ultra-hydrophobic surfaces using inclined surface and impinging droplet methodsD. Jasikova, M. Kotek |
328 |

Characteristics of droplet motion in effervescent spraysJ. Jedelský, M. Zaremba, M. Malý, M. Jícha |
334 |

Hydraulic losses in the spiral case of low specific speed pumpsRoman Klas, František Pochylý, Pavel Rudolf |
340 |

Observation of development of cavitation damageBranislav Knížat, Róbert Olšiak, Marek Mlkvik |
348 |

Numerical simulations of natural gas flow in pipe system with flowmetersJ. Kňourek, R. Matas, O. Prokeš, D. Tenkrát |
352 |

Wet steam wetness measurement in a 10 MW steam turbineM. Kolovratník, O. Bartoš |
358 |

A new method for fluid input into a hybrid synthetic jet actuatorJ. Kordík, Z. Trávníček, V. Tesař |
362 |

Influence of the velocity vector base relocation to the center of mass of the interrogation area on PIV accuracyJ. Kouba, J. Novotný, J. Nožička |
367 |

Experimental equipment for measuring physical properties of the annular hydrostatic thrust bearingM. Kozdera, S. Drábková, M. Bojko |
373 |

Development of air to air ejector for supersonic wind tunnelJ. Kracík, V. Dvořák, J. Kolář |
378 |

Study of temperature fields at sprinkled smooth and sandblasted tube bundleP. Kracík, L. Šnajdárek, J. Pospíšil |
382 |

Numerical Solution of Compressible Steady Flows around the RAE 2822 AirfoilP. Kryštůfek, K. Kozel |
390 |

Ventilation of idealised urban area, LES and wind tunnel experimentL. Kukačka, V. Fuka, Š. Nosek, R. Kellnerová, Z. Jaňour |
394 |

Simulation of the propeller disk inside the symmetrical channelM. Kyncl, J. Pelant |
404 |

Evaluation and accuracy of the local velocity data measurements in an agitated vesselB. Kysela, J. Konfršt, Z. Chára, M. Kotek |
411 |

Experimental study of flow around two grooved cylinders arranged in tandemO. Ladjedel, L. Adjlout, M.R. Hachim, A.Razi, T.Yahiaoui |
417 |

Utilization of heat pipes for transfer heat from the flue gas into the heat transfer mediumR. Lenhard, K. Kaduchová, Š. Papučík, J. Jandačka |
421 |

Measurement of the airflow velocity upstream and downstream a wire mesh using constant temperature anemometryF. Lizal, J. Tuhovcak, M. Jicha |
425 |

Design of methodology for wood chips moisture estimation determined for gasificationL. Lukáč, Š. Kuna, J. Kizek, M. Repášová |
429 |

Flow in data racksL. Manoch, J. Matěcha, J. Novotný, J. Nožička, P. Pohan |
433 |

Pulsatile flow analysis in a bend square channel by modal decompositionL. Manoch, J. Matěcha, H. Netřebská, J. Adamec |
438 |

The experimental determination of surface tension of supercooled waterR. Mareš, J. Kalová |
443 |

Modelling of flow in pipes and ultrasonic flowmeter bodiesR. Matas, V. Čibera, T. Syka |
447 |

Effects of Wing-Cuff on NACA 23015 Aerodynamic PerformancesS.M.A Meftah, M. Belhenniche, O Madani Fouatih, B. Imine |
453 |

Character of the cavitation erosion on selected metallic materialsM. Mlkvik, R. Olšiak, B. Knížat, J. Jedelský |
457 |

A parametric investigation of non-circular spiroid wingletsS. Mostafa, S. Bose, A. Nair, M. A. Raheem, T. Majeed, A. Mohammed, Y. Kim |
464 |

Analysis of the cavitating flow induced by an ultrasonic horn – Numerical 3D simulation for the analysis of vapour structures and the assessment of erosion-sensitive areasS. Mottyll, S. Müller, P. Niederhofer, J. Hussong, S. Huth, R. Skoda |
470 |

Analysis of the cavitating flow induced by an ultrasonic horn – Experimental investigation on the influence of actuation phase, amplitude and geometrical boundary conditionsS. Müller, M. Fischper, S. Mottyll, R. Skoda, J. Hussong |
479 |

Influence of volume working fluid and ambient temperature on cooling efficiency of loop thermosyphonP. Nemec, M. Malcho, J. Jandačka, J. Matušov |
485 |

Method for the evaluation of minor losses in pulsatile laminar fluid flowH. Netřebská, J. Matěcha, M. Schmirler, L. Manoch, J. Adamec |
489 |

On stochastic inlet boundary condition for unsteady simulationsP. Niedoba, M. Jícha, L. Čermák |
495 |

Investigation of the velocity distribution in the flow of a journal bearing modelM. Nobis, P. Reinke, M. Schmidt, M. Riedel, M. Redlich |
499 |

Atmospheric dispersion modelling over complex terrain at small scaleS. Nosek, Z. Janour, L. Kukacka, K. Jurcakova, R. Kellnerova, E.Gulikova |
504 |

Investigation of effect of oblique ridges on heat transfer in plate heat exchangersJ. Novosád, V. Dvořák |
510 |

Investigation of a traveling wave thermoacoustic engine in a looped-tubeP. Novotný, S.S. Hsu, A.B. Wang, T. Vít |
515 |

Boiling heat transfer on single phosphor bronze and copper mesh microstructuresŁ. J. Orman |
519 |

Boiling heat transfer on fins – experimental and numerical procedureT. Orzechowski, A. Tyburczyk |
523 |

Free convection on a refrigerator's condenserT. Orzechowski, K. Stokowiec |
530 |

Comparison of pool boiling heat transfer for different tunnel-pore surfacesR. Pastuszko |
535 |

The determination of field usability of method measuring temperature fields in the air using an infrared cameraM. Pešek, O. Pech |
540 |

Water oxygenation by fluidic microbubble generatorK. Peszynski, V. Tesař |
544 |

Measurement of local fluid levels and oscillation frequency on the reconstructed hydrodynamic tableM. Petříková, P. Kryštůfek |
550 |

Comparison of heat transfer in straight and corrugated minichannels with two-phase flowP. Peukert, J. Hrubý |
556 |

Heat transfer coefficient determination for flow boiling in vertical and horizontal minichannelsM. Piasecka, B. Maciejewska |
562 |

Tests of thermal resistance of simulated walls with the reflective insulationJ. Zb. Piotrowski, Ł. J. Orman, X. Lucas, E. Zender- wiercz, M. Telejko, D. Koruba |
569 |

A parametric study of influence of material properties on car cabin environmentJ. Pokorný, J. Fišer, M. Jícha |
573 |

Physical principle dealing with development of vortices formed by DBD actuatorP. Procházka, V. Uruba |
577 |

Experimental study of parachute aerodynamicsF. R. Marzabadi, R. Meshkani, H. Pouryavi, M. Ebrahimi |
582 |

Parallel numerical simulation of oscillating airfoil NACA0015 in the channel due to flutter instabilityV. Řidký, P. Šidlof |
587 |

Application of computational fluid dynamics on cavitation in journal bearingsM. Riedel, M. Schmidt, P. Reinke, M. Nobis, M. Redlich |
591 |

Experimental Heat Transfer Study of Endwall in a Linear Cascade with IR ThermographyB. Rojo, C. Jimenez, V. Chernoray |
599 |

Characterization of the cavitating flow in converging-diverging nozzle based on experimental investigationsP. Rudolf, M. Hudec, M. Gríger, D. Štefan |
605 |

Dryout occurrence in a helically coiled steam generator for nuclear power applicationL. Santini, A. Cioncolini,C. Lombardi, M. Ricotti |
611 |

Effect of gas expansion on the front shape of a Taylor bubble: an experimental contributionL. Santos, T. Esteves, N. Coelho Pinheiro |
620 |

Experimental and numerical analysis of unsteady behaviour of high efficiency mixed-flow pumpM. Sedlář, M. Komárek, M. Vyroubal, V. Doubrava, M. Varchola, P. Hlbočan |
627 |

The influence of the tangential velocity of inner rotating wall on axial velocity profile of flow through vertical annular pipe with rotating inner surfaceA. M. Sharf, H. A. Jawan, F. A. Almabsout |
633 |

Investigation of bubble behaviours in wet central heating systemsA. Shefik, Y. Ge |
639 |

The influence of flow parameters on the transition to turbulence in pulsatile flowM. Schmirler, J. Matěcha, H. Netřebská, J. Ježek, J. Adamec |
647 |

Flow past a self-oscillating airfoil with two degrees of freedom: measurements and simulationsP. Šidlof, M. Štěpán, V. Vlček, V. Řidký, D. Šimurda, J. Horáček |
652 |

Impact of the amount of working fluid in loop heat pipe to remove waste heat from electronic componentM. Smitka, Z. Kolková, P. Nemec, M. Malcho |
660 |

Characteristics of the T-junction with the equal diameters of all branches for the variable angle of the adjacent branchJ. Štigler, R. Klas, O. Šperka |
664 |

On transonic flow models for optimized design and experimentJ. Stodůlka, H. Sobieczky |
676 |

Numerical Simulation of Flow in Hub-Gap of Axial Stator BladesP. Straka |
680 |

On several aspects of finite element approximations of laminar/turbulent transition modelsP. Sváček |
686 |

Experimental study of influence of inlet geometry on thermal stratification in thermal energy storage during charging processP. Švarc, J. Seidl, V. Dvořák |
693 |

Numerical simulation of radial compressor stages with seals and technological holesT. Syka, O. Luňáček, J. Kňourek |
698 |

Application of the electrodiffusion method for near-wall flow diagnosticsJ. Tihon |
706 |

Numerical experiments modelling turbulent flowsJ. Trefilík, K.Kozel, J. Příhoda |
713 |

Study of quantification and distribution of explosive mixture in a confined space as a result of natural gas leakA. Tulach, M. Mynarz, M. Kozubková |
717 |

Dynamics of secondary flow behind backward-facing step in a narrow channelV. Uruba |
724 |

Description of the three-phase contact line expansionT. Váchová, Z. Brabcová, P. Basařová |
731 |

Heat transfer from oriented heat exchange areasM. Vantuch, J. Huzvar, A. Kapjor |
737 |

Influence of structural design condensing part of NH3 heat pipe to heat transferM. Vantúch, M. Malcho |
742 |

Two-dimensional simulation of vortex points and tracer particles in counterflowing He-IIE. Varga, C. F. Barenghi, Y. A. Sergeev, L. Skrbek |
747 |

Collision of a small bubble with a large falling particleJ. Vejrazka, M. Hubicka, P. Basarova |
753 |

Identification of temperature field in thermoacoustic generatorM. Veselý, P. Dančová, T Vít, V. Lédl |
758 |

Evaluation of the convection moisture coefficient using various methodsM. Vestfálová |
763 |

Density gradient theory combined with the PC-SAFT equation of state used for modeling the surface tension of associating systemsV. Vinš, B. Planková, J. Hrubý, D. Celný |
767 |

Transitional Phenomena on Phase Change MaterialsT. M. Wójcik, R. Pastuszko, M. Wojda, W. Kalawa |
773 |

The appearance of two lock-in states in the vortex flow around an in-line forced oscillating circular cylinderY. Yokoi, K. Hirao |
777 |

Parents of two-phase flow and theory of "gas-lift"P. Zitek, V. Valenta |
785 |

Solution of heat removal from nuclear reactors by natural convectionP. Zitek, V. Valenta |
794 |

## Not published in the EPJ |
Page |

Effect of blade wrap angle to centrifugal pump impeller efficiencyM. Hilmi Aksoy, O. Babayigit, O. Kocaaslan, M. Ozgoren |
799 |

Experimental and CFD performance analysis of a centrifugal pumpO. Babayigit, O. Kocaaslan, M. Hilmi Aksoy, M. Ozgoren |
807 |

An experimental investigation of surface roughness influence on centrifugal pump characteristicsO. Kocaaslan, M. Hilmi Aksoy, O. Babayigit, M. Ozgoren |
814 |

The effect of O-ring location and diameter on the turbulent shear flow downstream of a sphere located in a boundary layer flow over a flat plateA. Okbaz, M. Ozgoren, S. Dogan, H. Akilli |
820 |