Detail publikačního výsledku

Cavitation in Fractal Geometry Orifices

RUDOLF, P.; KUBINA, D.; HUDEC, M.; HOCHMAN, O.; POCHYLÝ, F.

Originální název

Cavitation in Fractal Geometry Orifices

Anglický název

Cavitation in Fractal Geometry Orifices

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

An experimental research of three types of orifices was carried out in a hydraulic circuit. One-hole orifice and two fractal-shaped orifices (von Koch snowflake, Apollonian gasket) were tested. Fractal-shaped orifices had lower pressure loss in non-cavitating regime. For cavitating conditions, von Koch snowflake orifice maintained the reduced pressure loss, while pressure loss curve within Apollonian gasket orifice gradually aligned with that of one-hole orifice. Dynamics of the cavitating flow behind the orifices featured distinct peak for one-hole orifice connected with shedding of one strong coherent vortical structure, while pressure amplitudes for fractal-shaped orifices (especially von Koch snowflake orifice) were significantly lower. This conclusion is attributed to multiscale behavior of the flow behind the fractal-shaped orifices.

Anglický abstrakt

An experimental research of three types of orifices was carried out in a hydraulic circuit. One-hole orifice and two fractal-shaped orifices (von Koch snowflake, Apollonian gasket) were tested. Fractal-shaped orifices had lower pressure loss in non-cavitating regime. For cavitating conditions, von Koch snowflake orifice maintained the reduced pressure loss, while pressure loss curve within Apollonian gasket orifice gradually aligned with that of one-hole orifice. Dynamics of the cavitating flow behind the orifices featured distinct peak for one-hole orifice connected with shedding of one strong coherent vortical structure, while pressure amplitudes for fractal-shaped orifices (especially von Koch snowflake orifice) were significantly lower. This conclusion is attributed to multiscale behavior of the flow behind the fractal-shaped orifices.

Klíčová slova

cavitation; fractal shape; hydraulic loss; pressure pulsations

Klíčová slova v angličtině

cavitation; fractal shape; hydraulic loss; pressure pulsations

Autoři

RUDOLF, P.; KUBINA, D.; HUDEC, M.; HOCHMAN, O.; POCHYLÝ, F.

Rok RIV

2019

Vydáno

03.12.2018

Nakladatel

ASME

ISBN

9780791861851

Kniha

Proceedings of the 10th Symposium on Cavitation (CAV2018)

Strany od

1

Strany do

5

Strany počet

5

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@inproceedings{BUT153419,
  author="Pavel {Rudolf} and Dávid {Kubina} and Martin {Hudec} and Ondřej {Hochman} and František {Pochylý}",
  title="Cavitation in Fractal Geometry Orifices",
  booktitle="Proceedings of the 10th Symposium on Cavitation (CAV2018)",
  year="2018",
  pages="1--5",
  publisher="ASME",
  isbn="9780791861851"
}