高压氢气喷射火焰数值模拟研究

来源 :第十五届全国氢能会议暨第7届两岸三地氢能研讨会 | 被引量 : 0次 | 上传用户:b329066975
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  作为一种无碳能源,氢被认为是21世纪的重要能源载体。氢的最小点火能量在易燃气体中是最小的,任何形式的氢泄漏均极易被静电等点火源点燃。所以掌握氢气喷射火焰的特性是极为重要的。本文建立了高压氢气喷射火焰特性数值模型,首先研究了不同喷嘴结构对喷射火焰形状及危险区域的影响,结果表明裂缝式扁平喷嘴的火焰大小主要取决于喷嘴的长宽比。然后对喷嘴直径和泄放压力对氢气喷射火焰形状和危险区域的影响进行了研究,发现圆形喷嘴所形成的喷射火焰的大小同时受到喷嘴直径和氢气泄放压力的影响。通过与文献报道的实验结果进行比较分析验证了数值模拟方法的准确性和可行性,本文研究结果可为高压储氢容器的安全评估提供依据。
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