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Št. zadetkov: 5
Bulk material influence on the aggressiveness of cavitation
Matevž Dular, Claus-Dieter Ohl
Izvirni znanstveni članek
Oznake: cavitation;bubbles;erosion;materials;acoustic impedance;
In a study conducted over 10 years ago (Petkovsek and Dular, 2013) [1] we noticed that the thin metal sheet sustains less cavitation damage when it is attached to an acrylic glass (PMMA) than in the case when we attached it to quartz glass (SiO2). The reason for this was not explored at the time. In ...
Leto: 2023 Vir: Fakulteta za strojništvo (UL FS)
Kelvin-Helmholtz instability governs the cavitation cloud shedding in Venturi microchannel
Darjan Podbevšek, Martin Petkovšek, Claus-Dieter Ohl, Matevž Dular
Izvirni znanstveni članek
Oznake: cavitation;Kelvin-Helmholtz instability;Venturi microchannel;
The paper shows visualization of cavitation inside a micro-Venturi channel. While the initial aim of the study was to establish supercavitating conditions inside a micro-Venturi, yet we found that this regime is suppressed due to the formation of a Kelvin-Helmholtz instability, which triggers a semi ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Shockwave velocimetry using wave-based image processing to measure anisotropic shock emission
Fabian Reuter, Jaka Mur, Jaka Petelin, Rok Petkovšek, Claus-Dieter Ohl
Izvirni znanstveni članek
Oznake: shock wave;cavitation;laser breakdown;laser illumination;
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
High-speed ultrasound imaging of bubbly flows and shear waves in soft matter
Juan Manuel Rosselló, Saber Izak Ghasemian, Claus-Dieter Ohl
Izvirni znanstveni članek
Oznake: ultrazvočno slikanje;brizganje mehurčkov;mehka snov;strižni valovi;ultrasound imaging;bubble jetting;soft matter;shear waves;
In this methods paper, we explore the capabilities of high-speed ultrasound imaging (USI) to study fast varying and complex multi-phase structures in liquids and soft materials. Specifically, we assess the advantages and the limitations of this imaging technique through three distinct experiments in ...
Leto: 2024 Vir: Fakulteta za strojništvo (UL FS)
Multi-frame multi-exposure shock wave imaging and pressure measurements
Jaka Mur, Fabian Reuter, Jernej Jan Kočica, Žiga Lokar, Jaka Petelin, Vid Agrež, Claus-Dieter Ohl, Rok Petkovšek
Izvirni znanstveni članek
Oznake: cavitation;laser breakdown;shock wave;laser illumination;fiber-optic hydrophone;
Shock wave visual detection was traditionally performed using streak cameras, limited to homogeneous shock wave emission, with the corresponding shock wave pressure measurements available at rather large distances or numerically estimated through equation of state for water. We demonstrate a multi-f ...
Leto: 2022 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 5
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