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微重力蜡烛火焰特征数值模拟
Alternative TitleNumerical Simulation of Candle Flame Characteristics in Microgravity
杜文锋; 孔文俊; 张孝谦
Source Publication燃烧科学与技术
2002-06-25
Volume8Issue:3Pages:202-206
Abstract建立了微重力蜡烛火焰的数学模型。计算与分析表明,火焰的形状由空气动力学特征决定,火焰是温度取决于化学反应动力学特征和火焰的热损失。在静止微重力环境中,自然对流的消失使火焰为半球形。辐射热损失对烛火焰温度(颜色)特征的形成有重要贡献,在静止重力环境下,化学反应放热速率受氧气扩散速率控制,辐射热损失的冷却使火焰温度低于正常重力温度值。但当环境气体的流动速度加大时,辐射热损失的影响逐渐减小,蜡烛火焰的温度逐渐接近正常重力蜡烛火焰的温度。当氧浓度较小时,火焰峰值温度小于烟黑形成的阈值温度(1300 K);当氧浓度较大时,火焰温度大于烟黑形成的阈值温度。
Keyword微重力 数值模拟 辐射热损失 烟黑形成阈值温度
Indexed ByCSCD
Language中文
Funding Organization国家 92 1 - 2微重力燃烧研究项目
CSCD IDCSCD:1015426
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/41770
Collection力学所知识产出(1956-2008)
Corresponding Author杜文锋
Recommended Citation
GB/T 7714
杜文锋,孔文俊,张孝谦. 微重力蜡烛火焰特征数值模拟[J]. 燃烧科学与技术,2002,8(3):202-206.
APA 杜文锋,孔文俊,&张孝谦.(2002).微重力蜡烛火焰特征数值模拟.燃烧科学与技术,8(3),202-206.
MLA 杜文锋,et al."微重力蜡烛火焰特征数值模拟".燃烧科学与技术 8.3(2002):202-206.
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