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О. Basmanov, V. Oliinyk, Ye. Morshch, Y. Kalchenko. Determining the minimum water pressure for supplying it for cooling the tank. Р. 145-161.

Determining the minimum water pressure for supplying it for cooling the tank

 

Basmanov Oleksii

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-6434-6575

 

Oliinik Volodymyr

National University of Civil Protection of Ukraine

http://orcid.org/0000-0002-5193-1775

 

Morshch Evgen

State Research Institute of Cybersecurity and

Information Protection Technologies

http://orcid.org/0000-0003-0131-2332

 

Kalchenko Yaroslav

National University of Civil Protection of Ukraine

https://orcid.org/0000-0002-3482-0782

 

DOI: https://doi.org/10.52363/2524-0226-2025-41-10

 

Keywords: fire nozzle, cooling water supply, water jet trajectory, flat trajectory

 

Аnnotation

 

A model of the water jet motion after exiting the fire nozzle has been constructed. The model is based on a system of linear homogeneous and linear inhomogeneous 2nd-order differential equations with initial conditions that describe the motion of an elementary volume of water in a gravitational field and take into account air drag. Their solving with the initial conditions gives the trajectory of the water jet motion depending on the horizontal and vertical components of the initial jet velocity. The dependence of the water pressure on the horizontal component of the water jet velocity at the fire nozzle provided that the jet reaches a given point on the tank shell has been constructed. It is shown that the dependence is a downward convex function with a single minimum point. Only one trajectory of the jet motion corresponds to the minimum water pressure, which reaches a given point. An increase in the pressure leads to the appearance of two possible trajectories, one of which is grazing, and the other can be grazing or flat. It is shown that the condition for the trajectory to be flat is that the horizontal component of the velocity exceeds a certain limit value that is proportional to the distance to the tank. An algorithm for determining the minimum water pressure for supplying to a given point on the tank shell by a flat trajectory is constructed. The algorithm uses Newton’s method to numerically solve the conditional optimization problem. It is shown that for a distance to the tank (5÷30) m the water pressure should be (23÷58) m for tanks 12 m high and (37÷70) m for tanks 18 m high. The obtained results can be used to determine the locations of fire nozzles for supplying water to cool tanks while developing a plan for localizing and eliminating fires in a oil tank storage and to reduce water losses due to the splattering of the jet after hitting the tank.

 

References

 

  1. Khan, F. I., Abbasi, S. A. (2001). An assessment of the likelihood of occurrence, and the damage potential of domino effect (chain of accidents) in a typical cluster of industries. Journal of Loss Prevention in the Process Industries, 14(4), 283–306. doi: 10.1016/S0950-4230(00)00048-6
  2. Yang, R., Khan, F., Neto, E. T., Rusli, R., Ji, J. (2020). Could pool fire alone cause a domino effect? Reliability Engineering & System Safety, 202, 106976. doi: 10.1016/j.ress.2020.106976
  3. Reniers, G., Cozzani, V. (2013). Features of Escalation Scenarios. Domino Effects in the Process Industries, 30–42. doi: 10.1016/B978-0-444-54323-3.00003-8
  4. Amin, M. T., Scarponi, G. E., Cozzani, V., Khan, F. (2024). Improved pool fire-initiated domino effect assessment in atmospheric tank farms using structural response. Reliability Engineering & System Safety, 242, 109751. doi: 10.1016/j.ress.2023.109751
  5. Kustov, M. V., Kalugin, V. D., Tutunik, V. V., Tarakhno, E. V. (2019). Physicochemical principles of the technology of modified pyrotechnic compositions to reduce the chemical pollution of the atmosphere. Voprosy Khimii i Khimicheskoi Tekhnologii, (1), 92–99. doi: 10.32434/0321-4095-2019-122-1-92-99
  6. Odynets, A., Nizhnyk, V., Sizikov, O., Feschuk, Y., Ballo, Y., Klymas, R., Zhykharev, O. (2022). Justification of additional measures for operational actions during fire extinguishing in petroleum products warehouses in conditions of combat. Scientific Bulletin: Сivil Protection and Fire Safety, (1(13)), 72–79. doi: 10.33269/nvcz.2022.1(13).72-79
  7. NAPB 05.035 – 2004. Instructions for extinguishing fires in tanks with oil and petroleum products.
  8. Abramov, Y., Basmanov, O., Salamov, J., Mikhayluk, A., Yashchenko, O. (2019). Developing a model of tank cooling by water jets from hydraulic monitors under conditions of fire. Eastern-European Journal of Enterprise Technologies, 1(10(97)), 14–20. doi: 10.15587/1729-4061.2019.154669
  9. Basmanov, O., Oliinyk, V., Afanasenko, K., Hryhorenko, O., Kalchenko, Y. (2024). Building a model of oil tank water cooling in the case of fire. Eastern-European Journal of Enterprise Technologies, 5(10(131)), 53–61. doi: 10.15587/1729-4061.2024.313827
  10. Saber, A., El-Nasr, M. A., Elbanhawy, A. Y. (2022). Generalized formulae for water cooling requirements for the fire safety of hydrocarbon storage tank farms. Journal of Loss Prevention in the Process Industries, 80, 104916. doi: 10.1016/j.jlp.2022.104916
  11. Oliinyk, V., Basmanov, O., Shevchenko, O., Khmyrova, A., Rushchak, I. (2025). Building a model of choosing water supply rate to cool a tank in the case of a fire. Eastern-European Journal of Enterprise Technologies, 1(10(133)), 45–51. doi: 10.15587/1729-4061.2025.323197
  12. Wassenberg, J. R., Stephan, P., Gambaryan-Roisman, T. (2019). The influence of splattering on the development of the wall film after horizontal jet impingement onto a vertical wall. Experiments in Fluids, 60(11). doi: 10.1007/s00348-019-2810-6
  13. Qian, S., Zhu, D. Z., Xu, H. (2022). Splashing generation by water jet impinging on a horizontal plate. Experimental Thermal and Fluid Science, 130, 110518. doi: 10.1016/j.expthermflusci.2021.110518
  14. Kim, H., Choi, H., Kim, D., Chung, J., Kim, H., Lee, K. (2020). Experimental study on splash phenomena of liquid jet impinging on a vertical wall. Experimental Thermal and Fluid Science, 116, 110111. doi: 10.1016/j.expthermflusci.2020.110111
  15. Hu, B., Zhao, T., Shi, Z., Li, W., Lin, Q., Liu, H., Wang, F. (2024). Spreading and splashing of liquid film on vertical hot surface by inclined jet impingement. Experimental Thermal and Fluid Science, 154, 111147. doi: 10.1016/j.
    2024.111147
  16. Liu, X., Wang, J., Li, B., Li, W. (2018). Experimental study on jet flow characteristics of fire water monitor. The Journal of Engineering, 2019(13), 150–154. doi: 10.1049/joe.2018.8950
  17. Abramov, Y., Basmanov, O., Krivtsova, V., Khyzhnyak, A. (2020). Estimating the influence of the wind exposure on the motion of an extinguishing substance. EUREKA: Physics and Engineering, 5, 51–59. doi: 10.21303/2461-4262.2020.001400
  18. DSTU B V.2.6-183:2011. Vertical cylindrical steel tanks for oil and oil products. General technical conditions.