Finite amplitude wave propagation through bubbly fluids

Siew-Wan Ohl (Author), Juan Manuel Rosselló (Author), Daniel Fuster (Author), Claus-Dieter Ohl (Author)

Abstract

The existence of only a few bubbles could drastically reduce the acoustic wave speed in a liquid. Wood’s equation models the linear sound speed, while the speed of an ideal shock waves is derived as a function of the pressure ratio across the shock. The common finite amplitude waves lie, however, in between these limits. We show that in a bubbly medium, the high frequency components of finite amplitude waves are attenuated and dissipate quickly, but a low frequency part remains. This wave is then transmitted by the collapse of the bubbles and its speed decreases with increasing void fraction. We demonstrate that the linear and the shock wave regimes can be smoothly connected through a Mach number based on the collapse velocity of the bubbles.

Keywords

kavitacija;mehurčki;cavitation;bubbles;

Data

Language:	English
Year of publishing:	2024
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	532.528
COBISS:	194638339
ISSN:	1879-3533
Views:	611
Downloads:	150
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	mehurčkasti fluid;hitrost toka;direktna numerična simulacija;želatina;visokohitrostna fotografija;
Type (COBISS):	Article
Pages:	str. 1-9
Issue:	ǂVol. ǂ176, [article no.] 104826
Chronology:	Jun. 2024
DOI:	10.1016/j.ijmultiphaseflow.2024.104826
ID:	23628085