气体射流剪切烟草的发散实验研究  

Experimental Study on Divergence Ability of Gas Jet Shearing Tobacco

作　　者：庄森[1] 石周正[1] 田盈辉[1] 蒋晶[1] 赵伟星[1] 邓秋超[1] 

机构地区：[1]郑州大学机械工程学院,郑州450001

出　　处：《农机化研究》2008年第7期194-197,共4页Journal of Agricultural Mechanization Research

摘　　要：根据气体自由射流的基本理论,推导出了气体射流发散的直径公式D=6.8(as/d0+0.147)d0。为了验证其理论的正确性,利用自制的喷嘴,实验研究了3种不同型号喷嘴的发散能力并进行比较。结果表明:在靶距小于70mm时实际值和理论值吻合良好。通过相关性分析,可以认为同一内径喷嘴的长径比与发散直径没有相关关系。According to the fundamental theory of gas free jet, the diameter formula D = 6.8 （ as/d0 ＋ 0. 147 ） dO of gas divergence was deduced out o In order to verify correctness of this theory , making use of a self - restraint＇s nozzle, the experiment had studied divergence ability of the three kinds different types nozzles and compared, the result showed that actual value accorded with the theory value well during the period of target distance which is smaller than 70 mm ; Correlation analysis indicated that we could think that the identical nozzle length - diameter ratio did not correlate with divergence diameter.

关 键 词：自由射流 喷嘴 相关性分析 

分 类 号：O358[理学—流体力学] S233.3[理学—力学]