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https://doi.org/10.31306/s.66.2.4

Numerical studies of the breakup of the water jet by a shock wave in the barrel of the fire extinguishing installation

Dmytro Dubinin orcid id orcid.org/0000-0001-8948-5240 ; National University of Civil Protection of Ukraine, Kharkiv, Ukraine *
Kostyantyn Korytchenko orcid id orcid.org/0000-0002-1005-7778 ; National Technical University «Kharkiv Polytechnic Institute», Kharkiv, Ukraine
Yevhen Krivoruchko ; National University of Civil Protection of Ukraine, Kharkiv, Ukraine
Oleg Tryfonov ; National Aerospace University «Kharkiv Aviation Institute», Kharkiv, Ukraine
Oleksandr Sakun ; National Technical University «Kharkiv Polytechnic Institute», Kharkiv, Ukraine
Serhii Ragimov ; University of Civil Protection of Ukraine, Kharkiv, Ukraine
Volodymyr Tryhub ; University of Civil Protection of Ukraine, Kharkiv, Ukraine

* Autor za dopisivanje.


Puni tekst: engleski pdf 1.329 Kb

str. 139-150

preuzimanja: 0

citiraj


Sažetak

This scientific paper delves into the numerical studies of the process of filling the barrel with water and the subsequent breakup of the water jet and water atomization in the barrel of the fire extinguishing installation. The numerical model of the process of water injection into the barrel with the subsequent breakup of water by a shock wave was substantiated. To simulate these processes, the ANSYS software was used. VOF (volume of fluid) method-based model was applied where it is assumed that there is no penetration of one medium into another. The solution is based on the surface tracking method applied to a fixed Eulerian grid. According to the results of the numerical study, it was established that the water injection time significantly exceeds the duration of the gas detonation cycle in the fire extinguishing installation. In particular, we found out that it takes 8 ms just to spread the water jet from one side of the barrel to the other. It was observed that a high quality of water atomization under the action of a high-speed gas flow including the water located along the barrel wall. We stated that it is unreasonable to use the pulse injection of water into the barrel in the designed fire extinguishing installation due to a high fregiency of the shock wave generation exceeding 23 Hz.

Ključne riječi

numerical model, finely atomized water, and fire-extinguishing installation, breakup of water by a shock wave

Hrčak ID:

318934

URI

https://hrcak.srce.hr/318934

Datum izdavanja:

8.7.2024.

Podaci na drugim jezicima: hrvatski

Posjeta: 0 *