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Journal of Applied Fluid Mechanics، جلد ۱۸، شماره ۱۱، صفحات ۲۸۲۳-۲۸۳۶
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عنوان انگلیسی Study on Prediction and Optimization of Long-range Water Mist Projection
چکیده انگلیسی مقاله The development of a long-distance water mist projection device is essential for mitigating emergencies like fires, explosions, chemical leaks, and dust contamination. Currently, there is a lack of theory to predict the spray range under the effect of fan operating parameters and duct structures, which results in the blindness of long-distance water mist projection device design. By integrating fluid dynamics theory, classical jet theory, and real operational data, a semi-empirical model is developed to predict the jet range and analyze the velocity distribution of the projection device. This model can be used to identify the key factors affecting characteristics of multiphase jet and optimize the alignment between the fan and air duct. Subsequently, a long-distance water mist projection device was manufactured and tested. At a range of 30.2 m, a large-scale transformer fire with a heat release rate between 81.31 and 124.56 MW was extinguished within 3 min using the proposed device. This comprehensive study may aid the development of long-distance axial airflow-inducing water mist devices and their applications in emergency response scenarios.
کلیدواژه‌های انگلیسی مقاله Fire suppression,Jet range,Long-range projection,Multiphase jet,Water mist
نویسندگان مقاله H. Z. Sun |
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China

X. L. Zhu |
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China

Z. G. Wang |
Nari Yihe Enviromental Technology Co., Ltd, SGCC, Beijing, 100080, China

J. Y. Zhao |
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China

C. H. Xu |
School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China

C. H. Xu |
School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China

X. S. Wang |
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China

نشانی اینترنتی https://www.jafmonline.net/article_2748_a02da663a3287d254eb4e649ed0c0d0f.pdf
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