Methods of construction characteristics compressor stage using regularities of characteristics of planar profile cascades

Abstract

 It is proposed to develop experimental and theoretical methods of construction characteristics of turbo machinery based on the geometric parameters of blade rows. Proposed a method to find the point corresponding to the nominal mode profile cascades. Based on regressionnoy depending developed under the guidance P. P. Kazanchan, the authors represented method of determining the stage of the compressor characteristics (for example, GTP AL31ST) with the aid of analytical formulas. Investigations were carried out using the proposed original strength characteristics of the method of construction stage on generalized empirical relationships (L. E. Olshteyn and A. R. Howell). Based on the comparison results c 3D CAD / CAE-simulation (in AnsysCFX) gas dynamics of the first stage fan GTR AL-31ST concluded feasibility used tion of the developed technique.