Experimental study on characteristics of sodium fire in a columnar flow with discontinuous injections |
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| Authors: | Zhi-Gang Zhang Yao-Long Ma Jin-Ke Li Yan Huo Zhong-Kun Liu |
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| Affiliation: | 1. Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin, Chinazg_zhang@hrbeu.edu.cn;3. Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin, China;4. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, China |
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| Abstract: | In the operation of the sodium-cooled fast reactor, the accident caused by the leakage and combustion of liquid sodium is common and frequent in sodium-related facilities. In this paper, an experiment Harbin Engineering University-Sodium Columnar Fire 4 (HEU-SCF4) is carried out to focus on the combustion characteristics in a discontinuous columnar flow. Liquid sodium (250°C) with the flux of about 1.0 m3/h was injected into a 7.9 m3 stainless steel cylindrical test chamber twice to shape the sodium fire in a columnar flow with discontinuous injections. The temperature, pressure data, and heat release rate in the test chamber were acquired and analyzed. It is found that each injection would cause a peak of space temperature, and it takes much shorter time to reach temperature peak in the second injection than the first injection. The peaks of pressure and heat release rate caused by the second injection are much higher than those caused by the first injection. This study is promising to evaluate the combustion characteristics of sodium fire in a columnar flow with different injection forms in the sodium-related facilities. |
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| Keywords: | Sodium fire discontinuous columnar flow temperature field pressure heat release rate |
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