Approaches to calculating the expansion, dispersion and stability of low expansion air-mechanical foams
DOI:
https://doi.org/10.33408/2519-237X.2025.9-1.54Keywords:
foam, expansion rate, stability, dispersion, average bubble diameter, gas content, capillary number, wetting capacity indexAbstract
Purpose. To theoretically evaluate the influence of the main factors affecting the expansion rate, dispersion and stability of air-mechanical foam produced in fire extinguishing devices.
Methods. Theoretical and empirical methods of analysis were used in the research.
Findings. As a result of the analysis of theoretical and experimental data on foam research, the main factors affecting the numerical values of their expansion rate, dispersion and stability were identified. It was found that the expansion rate, dispersion and stability of such foams significantly depend on the generation method, geometric characteristics of the devices, the rate of the supplied foaming agent solution and its physical and mechanical properties.
Application field of research. The results of the analysis can be used in the development of foam-generating devices, as well as to determine the optimal modes of their operation.
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