直射式喷咀垂直跨流喷油与沙丘驻涡稳定器匹配的实验研究

试验研究了直射式喷咀垂直跨流喷射时, 进口气流速度、喷咀压降与稳定器径向位置等参数对沙丘驻涡(BD)稳定器截面燃油浓度分布的影响, 并与沿z向喷射情况作了比较。结果表明, 垂直跨流喷油与BD稳定器的匹配比沿z向(即水平方向)喷油好。为使良好气动特性与燃烧稳定性的BD稳定器获得推广与应用, 必须考虑喷油方式、气流速度、喷咀压降与稳定器径向位置等参数对燃油浓度分布的影响。 

SOLUTION OF 2-D TRANSONIC CASCADE FLOW WITH EFFECTIVE FLUX VECTOR-SPLITTING IMPLICIT SCHEME

Abstract A one step effective flux vector splitting implicit scheme is developed,which features simplicity of no approximate factorization and no block bidiagonal system of equations.The scheme provides a significant enhancement in computational efficiency because it has advantageous characteristics in creation of higher order numerical implicit items.The Euler flow of a two dimensional cascade is calculated numerically by using the above scheme,and the results show that it has good convergence and accuracy of shock wave capture.