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Experimental study on release characteristics of the gas-liquid extinguishing agent in a confined space

机译:受限空间中气液灭火剂释放特性的实验研究

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To study the release characteristics of the extinguishing agent from fire extinguisher with different configurations of nozzles in a limited space, a fire extinguishing experiment platform was established. The release effect of the fire extinguishing agent was investigated by monitoring the gas molar fraction in the release space and the pressure change during the spraying process. The flow field was numerically simulated using the CFD software Fluent to compared with the experimental results. The results show that under the same release conditions the release effect of the convergent and divergent nozzles are significantly better than that of the straight nozzles. The convergent nozzle is slightly better than divergent nozzle. For the convergent nozzle with different structures, the larger the shrinkage angle is, the better the injection release.
机译:为了研究利用有限空间中的喷嘴配置的灭火剂从灭火剂的脱模特性,建立了灭火实验平台。通过监测释放空间中的气体摩尔分数和喷涂过程中的压力变化来研究灭火剂的剥离效果。使用CFD软件流畅的流动场进行数值模拟,与实验结果相比。结果表明,在相同的释放条件下,会聚和发散喷嘴的释放效果明显优于直流喷嘴的释放效果。收敛喷嘴略高于发散喷嘴。对于具有不同结构的收敛喷嘴,收缩角度越大,注射释放越好。

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