Detail publikace

Kavitace v clonách s fraktální geometrií

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

Český název

Kavitace v clonách s fraktální geometrií

Anglický název

Cavitation in Fractal Geometry Orifices

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

en

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 česky

kavitace; fraktální tvar; hydraulická ztráta; tlakové pulzace

Klíčová slova anglicky

cavitation; fractal shape; hydraulic loss; pressure pulsations

Vydáno

03.12.2018

Nakladatel

ASME

ISBN

9780791861851

Kniha

Proceedings of the 10th Symposium on Cavitation (CAV2018)

Strany od–do

1–5

Počet stran

5

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",
  month="December",
  pages="1--5",
  publisher="ASME",
  isbn="9780791861851"
}