INTRODUCTION With two bends in series the overall pressure loss is not obtained by summing the individual bend losses unless the spacing between the bends is sufficiently large to eliminate interference effects (see Table 11.2). This Item gives values of a correction or interaction factor@ ?? that relate the overall loss of combinations of two bends in series to the sum of the losses for the individual bends in interference-free flow. The types of bends considered in this Item are circular arc and mitre@ both of constant cross-sectional area. A further subdivision of mitre bends into either single mitre or composite types is made. The geometries of the three types of bends are shown in Sketches 1.1 to 1.3. For a particular combination of bends the interaction factor
77009 A-1990由ESDU - Engineering Sciences Data Unit 发布于 1990-03-01,并于 2011-04-19 实施。
非常抱歉,我们暂时无法提供预览,您可以试试: 免费下载 77009 A-1990 前三页,或者稍后再访问。
点击下载后,生成下载文件时间比较长,请耐心等待......
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号