Prediction of Efficient Shapes for Nozzles and Diffusers

摘要

An iterative method is proposed for designing short ducts. The flow field is assumed to be steady, two-dimensional, incompressible and turbulent and to consist of a core potential flow region and attached thin boundary layers. Specification of the target velocity distribution along the duct walls is discussed and a new iterative technique for designing the potential core is given. Also, an appropriate set of equations based on the integral inner variable theory is proposed for the prediction of the separation and calculation of the boundary layer integral parameters.