沈阳航空航天大学学报Issue(5)：1-7,7.DOI:10.3969/j.issn.2095-1248.2014.05.001
椭圆形切扇修形对波瓣混合器掺混性能影响
摘要
Abstract
Oval scalloping modification on a lobed mixer was conducted. A set of semi-ellipsis of the same area but with different length of major and minor axes which represent the depth and width of scalloping re-spectively was adopted. The effect on aerodynamic performance of the lobed mixer was studied in this paper by CFD software in terms of streamwise vorticity,pumping factor,total pressure recovery coefficientand the thermal mixing efficiency. The results show that deeper scalloping attains strongerstreamwise vorticity. The dissipation of streamwise vorticity of the scalloped lobed mixers is faster than that of baseline lobed mixer. Pumping factor is directly proportional to the depth of the notch while total pressure has an inverse relation-ship with the depth. The fidelity of two different models for thermal mixing efficiency is evaluated. It is re-vealed by comparison thatscalloping enhances thermal mixing efficiency before x = 0. 4 mm. After that the baseline lobed mixer has a larger value than the scalloped mixers investigated.关键词
波瓣混合器/切扇修形/流向涡/引射系数/总压恢复系数/热混合效率Key words
lobed mixer/scalloping/streamwise vorticity/pumping factor/total pressure recovery coeffi-cient/thermal mixing efficiency分类
航空航天引用本文复制引用
赵彤,黄沛霖,姬金祖..椭圆形切扇修形对波瓣混合器掺混性能影响[J].沈阳航空航天大学学报,2014,(5):1-7,7.基金项目
总装备部预研资助项目 （）
