Finite amplitude wave propagation through bubbly fluids

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

Povzetek

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.

Ključne besede

kavitacija;mehurčki;cavitation;bubbles;

Podatki

Jezik:	Angleški jezik
Leto izida:	2024
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	532.528
COBISS:	194638339
ISSN:	1879-3533
Št. ogledov:	611
Št. prenosov:	150
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	mehurčkasti fluid;hitrost toka;direktna numerična simulacija;želatina;visokohitrostna fotografija;
Vrsta dela (COBISS):	Članek v reviji
Strani:	str. 1-9
Zvezek:	ǂVol. ǂ176, [article no.] 104826
Čas izdaje:	Jun. 2024
DOI:	10.1016/j.ijmultiphaseflow.2024.104826
ID:	23628085