Evaluation of the bubbles diameter and the blowing speed of the air-mechanical foam forming bubbles on the screen of the foam generators

Authors

  • Tran Duc Hoan University of Fire Prevention and Fighting; 123000, Vietnam, Hanoi, Thanh Xuan District, Khuat Duy Tien str., 243 https://orcid.org/0000-0002-8558-8979
  • Andrey N. Kamlyuk State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0002-9347-0778
  • Aleksey O. Likhomanov State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0002-9374-1486
  • Aleksandr V. Grachulin State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0003-3832-8258
  • Alexander S. Platonov State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0001-5463-6029
  • Artem F. Titovets State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25 https://orcid.org/0000-0002-9952-6525

DOI:

https://doi.org/10.33408/2519-237X.2022.6-1.84

Keywords:

foam, foam screen, foam bubble, foam bubble blowing speed, foam bubble diameter

Abstract

Purpose. To study the formation process of bubbles of air-mechanical foam on the cellular screen of foam generators. To analyze the influence of the foam screen cell dimensions, the speed of the foaming mixture (the foam bubble blowing speed), as well as the physical properties of this mixture on the diameter of the bubbles of the air-mechanical foam.

Methods. In the process of the research theoretical methods of analysis were used, as well as the analytical Ferrari method and Cardano's formula for solving an algebraic equation of the fourth degree and cubic equation, respectively.

Findings. It is shown that the diameter of the air-mechanical foam bubbles is affected by the size of the foam screen cell, the physical properties of the foaming agent, and the speed of the foaming mixture (the foam bubble blowing speed). A theoretical method is proposed for determining the diameter of the foam bubble formed on a cellular screen of the foam generator. The diameter of foam bubbles formed at the flooded and unflooded holes of the foam screen with cell size in the range from 0.5 × 0.5 to 5.0 × 5.0 mm was calculated.

Application field of research. The results can be used for theoretical substantiation and development of foam generators with cellular screen.

Author Biographies

Tran Duc Hoan, University of Fire Prevention and Fighting; 123000, Vietnam, Hanoi, Thanh Xuan District, Khuat Duy Tien str., 243

Faculty of Automation and Technical Equipment of Fire Fighting and Rescue, Deputy Head of the Faculty; PhD in Technical Sciences

Andrey N. Kamlyuk, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Deputy Chief of the University on Scientific and Innovative Activity; PhD in Physical and Mathematical Sciences, Associate Professor

Aleksey O. Likhomanov, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Chair of Automatic System Security, Associate Professor; PhD in Technical Sciences

Aleksandr V. Grachulin, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Chair of Automatic System Security, Senior Lecturer; PhD in Technical Sciences, Associate Professor

Alexander S. Platonov, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Department of Scientific and Innovation Activity, Leading Researcher; PhD in Physical and Mathematical Sciences, Associate Professor

Artem F. Titovets, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, Mashinostroiteley str., 25

Faculty of Emergency Prevention and Elimination, cadet

References

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Published

2022-02-25

How to Cite

Tran Д. Х., Kamlyuk А. Н., Likhomanov А. О., Grachulin А. В., Platonov А. С. and Titovets А. Ф. (2022) “Evaluation of the bubbles diameter and the blowing speed of the air-mechanical foam forming bubbles on the screen of the foam generators”, Journal of Civil Protection, 6(1), pp. 84–94. doi: 10.33408/2519-237X.2022.6-1.84.

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Section

Fire and industrial safety (technical sciences)

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