[1].90°喷管的初步试验[J].东南大学学报(自然科学版),1965,7(2):115-125.[doi:10.3969/j.issn.1001-0505.1965.02.008]
 Some Experiments on the Quadrant Orifice INSTRUMENTATION GROUP OF THE RESEARCH CABINET № 2[J].Journal of Southeast University (Natural Science Edition),1965,7(2):115-125.[doi:10.3969/j.issn.1001-0505.1965.02.008]
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90°喷管的初步试验()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
7
期数:
1965年第2期
页码:
115-125
栏目:
本刊信息
出版日期:
1965-06-20

文章信息/Info

Title:
Some Experiments on the Quadrant Orifice INSTRUMENTATION GROUP OF THE RESEARCH CABINET № 2
作者:
南京工学院第二研究室检测组
关键词:
流量系数 喷管 雷诺数 加工精度 自来水 稳定性 桔果 数据 比重瓶 分度数
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1965.02.008
摘要:
本文介紹了对90°噴管的原始流量系数、極限雷诺数低限、以及原始流量系数与90°噴管結构参数之間关系的初步試驗結果,主要結論是:1.90°噴管的極限雷諾数低限較一般規程推荐的数据要高一个数量級;2.90°噴管的原始流量系数值与r/d有关,r/d的数值可以不受Koennecke建議的限制;3.加工精度对流量系数的稳定性和流量系数值似无显著影响。
Abstract:
The paper gives experimental results of 13 quadrant orifices on the original discharge coefficients, lower limits of the critical Reynold’s number, and the relations between the discharge coefficients and the construction parameters. The main conclusions are: 1. the lower limits og the critical Reynold’s number should be greater than the value given in the code by 10 times; 2. the discharge coeffieient is affected by the parametr r/d, and the values r/d may be different from the value specified by Koennecke 3. the manufacturing precision seems to have little effect on the stability and numerical values of the discharge coefficients.
更新日期/Last Update: 2013-05-01