An experimental investigation of oblique entry pressure losses in automotive catalytic converters
An experimental investigation of oblique entry pressure losses in automotive catalytic converters
复制标题
汽车催化转化器斜入口压力损失的实验研究
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
C. A. Roberts
中科院分区：
文献类型：
--
作者：
S. S. Quadri;S. Benjamin;C. A. Roberts
摘要本文研究了汽车催化剂整体料的斜入口压力损失。在一个专门设计的流动试验装置上，使用不同长度的单块（17-100 mm），在雷诺数和入射角（0-75°）范围内进行了实验。损失被发现是雷诺数和入射角的函数，并且已经导出了一般的相关性。计算流体动力学预测的流量分布在轴对称催化剂组件已经执行。假设斜向进气损失在81°迎角以上为常数，则斜向进气损失的计算结果与实验数据的符合性要好得多。
Abstract This study investigates oblique entry pressure loss in automotive catalyst monoliths. Experiments have been performed on a specially designed flow rig using different lengths of monolith (17—100 mm) over a range of Reynolds number and angles of incidence (0–75°). Losses were found to be a function of Reynolds number and angle of incidence and a general correlation has been derived. Computational fluid dynamics predictions of the flow distribution across axisymmetric catalyst assemblies have been performed. Incorporating the oblique entry loss provided much better agreement with experimental data with the assumption that such losses were constant above an angle of incidence of 81°.