风流紊流换热的场模型 |
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引用本文: | 周西华,王继仁,王树刚,陈衍宽. 风流紊流换热的场模型[J]. 矿业安全与环保, 2001, 28(5): 17-19 |
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作者姓名: | 周西华 王继仁 王树刚 陈衍宽 |
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作者单位: | 1. 辽宁工程技术大学资环学院, 2. 辽宁铁法矿务局晓明矿, |
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摘 要: | 从守恒原理出发,在考虑温度引起空气密度变化、等压和小密度差近似的前提下,导出了描述风流紊流状态热量交换的数学模型。采用紊流粘性系数模型,封闭方程组,建立了一种新风流热量交换的数学模型——场模型。
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关 键 词: | 紊流粘性系数 热量交换 场模型 |
文章编号: | 1008-4495(2001)05-0017-03 |
修稿时间: | 2001-04-19 |
Field Model of Heat Exchange of Air Flow in Turbulent State |
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Abstract: | By using titanium tetrachloride and zinc acetate as raw materials,spinel -type ZnTiO 3 ultra -fine particles were prepared with precipitation method,and the forma tion process was also studied by XRD and TEM.The results show that t he well -prepared Zn-TiO 3 ultra -fine particles have the featu res of uniform dispersal,small particle size and large specif ic surface area. |
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