火墙式火炕内烟气流动特性数值模拟分析 |
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引用本文: | 郝亚芬,;敖永安,;端木琳,;王宗山. 火墙式火炕内烟气流动特性数值模拟分析[J]. 房材与应用, 2014, 0(8): 8-12 |
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作者姓名: | 郝亚芬, 敖永安, 端木琳, 王宗山 |
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作者单位: | [1]沈阳建筑大学市政与环境工程学院,沈阳110168; [2]大连理工大学建设工程学部土木工程学院,辽宁大连116024 |
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基金项目: | 国家自然科学基金项目(51178074) |
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摘 要: | 对比火墙式火炕和传统火炕内部烟气流动特性、烟气温度分布、炕面温度分布,分析两种炕体结构的热工性能,并为农村火炕的进一步优化设计提供理论依据。利用火灾动力学模拟软件FDS5.3应用大涡模拟方法的场模型、辐射模型模拟分析传统火炕和火墙式火炕的炕面温度、炕内烟气温度分布与烟气流动特性,得到相关云图和温度分布。火墙式火炕的炕面温度比传统型火炕炕面温度高10℃左右,向室内散热量大,在炕火墙和灶同时工作时,炕头中心温度达到85℃。火墙式火炕的炕体结构优于传统火炕,但仍然存在炕头过热的问题,有待进一步优化。
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关 键 词: | 火墙式火炕 烟气流动 数值模拟 炕头温度 FDS5 3 |
Numerical Simulation Analysis of the Smoke Flowing Characteristics within Huo-Kang with Hot-wall |
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Affiliation: | HAO Ya-fen, AO Yong-an , DUANMU Lin , WANG Zong-shan (1.School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China; 2.Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China) |
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Abstract: | The smoke's flow characteristics, temperature distribution inside a Huo-Kang with and without hot-wall, and the surface temperature distribution of the Huo-Kang are analyzed. Differences between the traditional Huo-Kang and the Huo-Kang with hot-wall are compared. Their thermal performances within the structures are expounded, which provide theory basis for better design of Huo-Kang in village. By using fire dynamics simulation software FDS5.3, the large eddy simulation method is applied to the field of model; radiation model simulation is used to analyze the surface temperature, smoke tempera- ture distribution and flow characteristics for the traditional Huo-Kang with and without hot-wall; and relevant cloud and temperature distribution are provided. The surface temperature of the Huo-Kang with hot- wall is about 10 ℃ higher than the traditional Huo-Kang; heat dissipating capacity of the Huo-Kang with hot-wall is bigger, when the hot-wall and the Huo-Kang are working together; the central surface temperature of the head of the Huo-Kang with hot-wall is some 85 ℃. We get the conclusion that the structure of the Huo-Kang with hot-wall is superior to the traditional Huo-Kang, but it still has problem that the surface of head of Huo-Kang is too hot, it needs to improve. |
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Keywords: | hot-wall Kang smoke flowing numerical simulation Kang surface temperature FDS5.3 |
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