| 陈胤昌,陈方,何坤,陆兆勇,程旭东.考虑泡沫密度变化的压缩空气泡沫垂直长距离输送特性研究[J].火灾科学,2025,34(4):313-319. |
| 考虑泡沫密度变化的压缩空气泡沫垂直长距离输送特性研究 |
| Study on the characteristics of vertical long-distance transportation of compressed air foam considering the variation of foam density |
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| DOI：10.3969/j.issn.1004-5309.2025.04.07 |
| 基金项目:国家重点研发计划项目(2021YFC3001700, 2021YFC3001704) |
| 作者 | 单位 | | 陈胤昌 | 1. 中国科学技术大学火灾安全全国重点实验室, 合肥, 230026 | | 陈方 | 1. 中国科学技术大学火灾安全全国重点实验室, 合肥, 230026 | | 何坤 | 1. 中国科学技术大学火灾安全全国重点实验室, 合肥, 230026 | | 陆兆勇 | 2. 广东瑞霖特种设备制造有限公司, 肇庆, 526100 | | 程旭东** | 1. 中国科学技术大学火灾安全全国重点实验室, 合肥, 230026 |
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| 中文关键词: 压缩空气泡沫 垂直输送 压力衰减 超高层建筑 |
| 英文关键词:Compressed air foam Vertical transportation Pressure drop Super high-rise buildings |
| 摘要点击次数: 28 |
| 全文下载次数: 15 |
| 中文摘要: |
| 为了揭示压缩空气泡沫在超高层垂直输送过程中泡沫密度的变化规律与压力衰减特性,选取1% A类与3% AFFF泡沫作为研究对象,研究了不同压力对不同发泡倍数泡沫密度的影响,并建立了压缩空气泡沫状态方程来描述该过程。对于发泡倍数为7的1% A类泡沫,0.5 MPa下的泡沫密度是常压状态下的3.84倍。基于压缩空气泡沫状态方程和两相流理论建立了考虑泡沫密度变化的压缩空气泡沫垂直长距离输送压力预测模型,模型预测值与超高层建筑输送实验值的误差在12%以内,相比前人的压力预测模型具有更高的预测有效性。研究结果对压缩空气泡沫在超高层建筑的应用具有重要意义。 |
| 英文摘要: |
| In order to clarify the change of foam density and pressure decay of compressed air foam in the process of vertical transportation in ultra-high floors, 1% Class A and 3% AFFF foams were selected as the research objects, and the effects of different pressures on the foam density of different foaming multiples were investigated. The state of the compressed air foams was formulated to describe the process. The foam density at 0.5 MPa was 3.84 times higher than that at atmospheric pressure for 1% A foam with a foaming factor of 7. Based on the equation of state of compressed air foam and the two-phase flow theory, a pressure prediction model for vertical long-distance transportation of compressed air foam considering the change of foam density was established, and the error between the model predicted value and the experimental value of the transportation of ultra-high-rise buildings was within 12%, which had a higher prediction validity compared with that of the prediction model of the previous researchers. The results of the study are of great significance for the application of compressed air foam in ultra-high-rise buildings. |
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