Numerical Simulation of Gas-Solid Two-Phase Jet in a Non-pressure-accumulated and Handheld Fire Extinguisher
- 10.2991/msam-18.2018.22How to use a DOI?
- non-pressure-accumulated; handheld fire extinguisher; gas-solid two-phase jet; numerical simulation
The ultra-fine dry powder injection process in non-pressure-accumulated and handheld fire extinguishers involves gas-phase and solid-phase two-phase movement. The fire-extinguishing effect is closely related to its jet form. In order to study the jet form accurately, this paper selects the discrete particle model, combines the advantages of Lagrange method and Euler method, and uses CFD simulation software FLUENT to numerically simulate the gas-solid two-phase jet shape of a non-pressure-accumulated and handheld fire extinguisher. And compares the simulation results with the experimental results, analyzes the flow field characteristics inside and outside the cylinder. The results show that the numerical simulation agrees well with the experimental results and can better represent the motion state of the two-phase flow. The numerical simulation results show that the duration of extinguishing agent particles injection is 1.07s, which is very close to the actual injection duration of 1.13s. The difference between the two is 4.4%. Within the acceptable error range, it is further proved that the simulation results are good agreements with the experiment.
- © 2018, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Yidan Wu AU - Hongwei Zhuang AU - Pengfei Yu PY - 2018/07 DA - 2018/07 TI - Numerical Simulation of Gas-Solid Two-Phase Jet in a Non-pressure-accumulated and Handheld Fire Extinguisher BT - Proceedings of the 2018 3rd International Conference on Modelling, Simulation and Applied Mathematics (MSAM 2018) PB - Atlantis Press SP - 93 EP - 98 SN - 1951-6851 UR - https://doi.org/10.2991/msam-18.2018.22 DO - 10.2991/msam-18.2018.22 ID - Wu2018/07 ER -