非轴对称波瓣喷管引射器的特性实验研究

Experimental Study of the Performance of an Ejector with a Non Axisymmetrically Lobed Nozzle

波瓣喷管引射器具有高效的引射掺混特性。非轴对称波瓣喷管引射器的引射特性与轴对称波瓣喷管引射器有所不同。本文对六波瓣的非轴对称喷管引射器进行了一系列的实验，研究了该引射器的引射流量比与主流温度的关系，混合管动量修正系数及其工作特性曲线。

The ejector with a lobed nozzle is of high efficiency in pumping and mixing.The ejector with a non axisymmetrically lobed nozzle has different performances in comparison to that with an axisymmetrical nozzle.In this paper,a series of experiments on a non axisymmetrically six lobed ejector are conducted,including the relationship between pumping flow ratio and primary flow temperature,the corrected momentum coefficients of mixing duct and the performnce curves of the ejector. Theoretical analysis of the performance of the ejector is also made.Agreement between the theory and the experiment is fairly good on the whole.