齐艺裴;秦跃平;赵恒泽;王福生;朱令起;

• 1:中国矿业大学(北京)资源与安全工程学院
• 2:华北理工大学矿业工程学院

摘要(Abstract)：

通过理论分析建立了总能量耗散模型、层流底层能量耗散模型、湍流核心区能量耗散模型;以基本耗能单元"涡"为切入点,结合了涡运动理论和混合长度理论,确定了管道能量耗散分布;利用尼古拉兹实验数据对各类模型进行了定量化.结果表明:湍流核心区能量耗散占总能量耗散的一半以上;壁面粗糙度通过影响层流底层的能量耗散达到降低通风阻力的目的;增大半径降低了湍流核心区边界处的能量耗散,起到降低通风阻力的作用;管道风速只在湍流核心区边界处对能量耗散产生影响.

关键词(KeyWords)： 通风阻力;风速;能量耗散;尼古拉兹实验

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51574249);; 河北省自然科学基金项目(E2018209338)

作者(Author): 齐艺裴;秦跃平;赵恒泽;王福生;朱令起;

Email:

DOI: 10.13247/j.cnki.jcumt.001228

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