文章基本信息

标题：実験用送風機による実験 (その2) 角オリフィスの特性および丸ダクト分岐部分流特性に関する研究
本地全文：下载
作者：樋口道之助 ; 瀬川正人
期刊名称：日本造船学会論文集
印刷版ISSN：0514-8499
电子版ISSN：1884-2070
出版年度：1965
卷号：1965
期号：118
页码：328-336
DOI：10.2534/jjasnaoe1952.1965.118_328
出版社：The Japan Society of Naval Architects and Ocean Engineers
摘要：
This paper deals with results of tests made on the following matters. (1) The flow through the rectangular orifice fitted on a rectangular air duct. (2) The divided flow at the tee branch for a circular air duct. As the results of expeiments, the following empirical formulae have been obtained (1) Coefficient of resistance at the rectangular orifice. ζ= ( A_d /α A ₀-1) ² α=0.625+0.375 ( A ₀/ A_d ) ³ (2) Loss in the divided flow at the tee branch for a circular air duct. Main duct P=0.05 Hm 0.6 S²Hm Branch duct P=0.99 Hm+0.341 Hb Where ζ=coefficient of resistance A ₀=sectional area of orifice A_d =sectional area of duct P=pressure loss, mmAq H_m =velocity head in the main duct, mmAq H_b =velocity head in the branch duct, mmAq S=flow quantity ratio