Browsing by Author "Müller Miloš"
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- ItemCalibration of PVDF Film Transducers for the Cavitation Impact Measurement(EDP Sciences, 2018) Hujer Jan; Müller MilošThis paper describes investigation of the influence of the protective layer thickness on the calibration sensitivity of PVDF films sensors for the cavitation impacts measurements. The PVDF film sensor is casted into an aluminium block. The drop ball method is used for the measurement of the relation between impact force and the voltage detected on the PVDF film sensor. The calibration constants are measured for three different protective layers thicknesses. Five different ball weights for 400 mm drop height are used to reach the required impact force range. The ball positions for the evaluation of the impact force are measured with a high speed camera. The voltage signal detected on the PVDF film clamps was measured with a high speed digitizer. The measured signals are analysed in LabVIEW Signal Express.
- ItemCavitation Bubble Interaction Close to Ultra-Hydrophobic Surface(2016) Jašíková Darina; Müller Miloš; Kotek Michal; Kopecký Václav
- ItemComparison of ultrasound and LIB generated cavitation bubble(2017) Jašíková Darina; Schovanec Petr; Kotek Michal; Müller Miloš; Kopecký VáclavThere has been tried many methods how to generate single cavitation bubble. The purpose of these experiments is to observe the surface impact of collapsing cavitating bubbles. The most of method are based on spark to induced superheat limit of liquid. Here we compare the one of these methods – laser induced breakdown (LIB) with more correct mechanical way using ultrasound as generator. There is described the setup for ultrasound cavitation effecting the sessile bubble as well as random generated and moving bubble. We visualize the cavitation bubble using high speed camera of speed 180 kHz. There are observed interface instabilities as the ultrasound response.
- ItemExperimental setup for laser-induced breakdown in aqueous media(SPIE Proceedings, 2016) Jašíková Darina; Schovanec Petr; Kotek Michal; Kopecký Václav; Müller Miloš
- ItemImpact load measurement with a PVDF pressure sensor in an erosive cavitating flow(IOP Publishing Ltd, 2015) Hujer Jan; Müller Miloš; Carrat Jean-Bastien; Riondet Michel
- ItemThe improvement of the surface hardness of stainless steel and aluminium alloy by ultrasonic cavitation peening(2017) Styková Janka; Hujer Jan; Müller MilošThis article presents first results of the experimental investigation of the influence of the cavitation shot less peening process on the properties of stainless steel and aluminium alloy specimens. The cavitation field was generated by an ultrasonic horn submerged in water and operated by an ultrasonic generator. The temperature of the water was controlled by thermometer and adjusted by separate water cooling system. The mass loss, the mass loss rate and the modification of the surface hardness are evaluated for different cavitation exposure intervals. The mass loss was measured by micro weighing scale and the surface hardness by the micro-hardness meter. The presented results indicates the significant improvement in the surface hardness for both tested materials.
- ItemThe Investigation of Cavitation phenomena with Utilization of Acoustical, Optical and Mechanical methods(SIGMA GROUP a.s., 2018) Müller Miloš; Hujer Jan
- ItemMobile Fire Fighting Pump(2018) Dvořák Václav; Havelka Pavel; Müller Miloš; Váňa Tomáš
- ItemPhotolithographically Home-Made PVDF Sensor for Cavitation Impact Load Measurement(MDPI, 2021) Hujer Jan; Dančová Petra; Kořínek Tomáš; Müller Miloš
- ItemPhotolithographically home-made PVDF sensor for cavitation impact load measurement(MATEC Web Conf., 2020) Hujer Jan; Menghuot Phan; Kořínek Tomáš; Dančová Petra; Müller Miloš
- ItemPreliminary investigation of centrifugal pump for fire engine(2018) Dvořák Václav; Müller Miloš
- ItemPreparation of experimental and numerical research on unsteady cavitating flow around hydrofoil(E D P SCIENCES, 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE, 2015) Müller Miloš; Sedlář Milan; Komárek Martin; Zima Patrik; Vyroubal Michal; Pálka Tomáš
- ItemSingle cavitation bubble interaction close to hydrophobic surface(North Atlantic University Union, 2017) Jašíková Darina; Kotek Michal; Müller Miloš; Kopecký Václav
- ItemSpatial Distribution of the Cavitation Aggressiveness in a High Speed Cavitation Tunnel(ASME, 2018) Hujer Jan; Müller Miloš
- ItemThe Study of Single Cavitation Bubble Generated with Lib Technique and Its Force Impact on the Solid Wall(World Academy of Science, 2014) Jašíková Darina; Müller Miloš; Kotek Michal; Kopecký Václav
- ItemTechnical Equipment of Buildings and Energy Efficient Buildings in Examples(Technical University of Liberec, 2016) Müller Miloš
- ItemThe effect of the window temperature on the thermal comfort in a room heated by a floor convector(International Society of Indoor Air Quality and Climate, 2014) Fraňa Karel; Müller Miloš; Zhang Jianshun
- ItemThe synchronized force impact measurement and visualization of single cavitation bubble generated with LIB(North Atlantic University Union, 2015) Jašíková Darina; Müller Miloš; Kotek Michal; Kopecký Václav