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工程力学  2014 

高压储氢气瓶的长径比和进气口直径对其快充温升及温度分布的影响

DOI: 10.6052/j.issn.1000-4750.2012.11.0907, PP. 225-232

Keywords: 高压储氢,温度分布,快速充气,温度升高,纤维缠绕复合气瓶,数值模拟

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Abstract:

在储氢气瓶快充引起温升的理论基础上,考虑到真实气体充气的复杂性,基于真实气体的k-ε湍流模型,建立高压储氢气瓶快速充气温度变化的高精度数值计算模型。用计算流体力学软件Fluent13.0模拟35MPa,120L纤维缠绕铝内胆复合气瓶快速充气情况。为了研究气瓶的长径比和进气口直径对温升和温度分布的影响,分别对长径比为3.6、2.0,进气口直径为16mm、40mm、64mm的气瓶的充气情况进行模拟。数值模拟的结果表明在相同的充气条件下,长径比越小气瓶内最高充气温度越低,瓶内的温度分布也相对越均匀;进气口直径越小瓶内最高充气温度的升幅越小。

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