Sonoluminescence from ultra-high temperature and pressure cavitation produced by a narrow water jet.
High-pressure high-temperature cavitation
Multi-bubble sonoluminescence
Multifunction cavitation
Narrow water jet nozzle
Journal
Heliyon
ISSN: 2405-8440
Titre abrégé: Heliyon
Pays: England
ID NLM: 101672560
Informations de publication
Date de publication:
Aug 2021
Aug 2021
Historique:
received:
15
05
2021
revised:
17
06
2021
accepted:
10
08
2021
entrez:
25
8
2021
pubmed:
26
8
2021
medline:
26
8
2021
Statut:
epublish
Résumé
This work developed a small-scale processing apparatus for ultra-high temperature and ultra-high-pressure cavitation (UTPC) incorporating a small diameter (0.1 mm) water jet nozzle. This instrumentation comprised a swirl flow nozzle (SFN) installed on the water jet nozzle so as to obtain UTPC from a multifunction cavitation (MFC) setup. Multi-bubble sonoluminescence (MBSL) assessments using two types of photon counting heads were employed to assess UTPC, MFC, ultrasonic cavitation (UC), water jet cavitation (WJC) and SFN-WJC. The SL intensity was found to increase in the order of SFN-WJC, WJC, UC, MFC to UTPC. Because UTPC produced the most intense emissions, this process evidently attained the highest processing temperature. Assuming a UC bubble temperature of 4000 K, the temperatures associated with UTPC, MFC and WJC were determined to be 5400-5900, 5300 and 3200-3300 K, respectively. The energy density of a single bubble during UTPC was calculated using the Rayleigh-Plesset and Planck equations for an initial bubble radius of 100 μm together with photon measurements from many bubbles and employing Planck's law. The highest SL intensity of UPTC is thought to exist due to the high energy density of UTPC. This research demonstrates that it is possible to increase the energy density of cavitation bubbles within a small reaction area.
Identifiants
pubmed: 34430745
doi: 10.1016/j.heliyon.2021.e07767
pii: S2405-8440(21)01870-3
pmc: PMC8367810
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e07767Informations de copyright
© 2021 The Author(s).
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
Références
Phys Rev Lett. 2000 Jan 24;84(4):777-80
pubmed: 11017370
Phys Rev Lett. 1996 Oct 14;77(16):3467-3470
pubmed: 10062227
Materials (Basel). 2018 Nov 15;11(11):
pubmed: 30445738
Phys Rev Lett. 1995 Sep 25;75(13):2602-2605
pubmed: 10059353
Phys Rev Lett. 2000 Aug 7;85(6):1326-9
pubmed: 10991543
Phys Rev E Stat Nonlin Soft Matter Phys. 2010 Jul;82(1 Pt 2):016316
pubmed: 20866734
Phys Rev Lett. 2002 May 13;88(19):197402
pubmed: 12005664