Prediction of the Laminar Two-Dimensional Jet Flow through a Convergent Channel

概要

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This paper describes an analytical method for the jet flow through a nozzle into the atmosphere. The flow is assumed to be two-dimensional, incompressible, steady and laminar. The velocity profile at the exit of the convergent channel is assumed to be that of Hamel's flow. A streamline coordinate system is adopted for governing equations. The velocity distribution across the jet flow is expanded to a Fourier series. Simultaneous first-order ordinary differential equations are obtained from the Fourier coefficients. Starting with the exit of the channel, the flow field is solved numerically step by step in the downstream direction. Numerically predicted outcomes are being considered for comparison for Reynolds numbers of 300, 400 and for different jet angles. Good agreement between the analytical and numerical results is found.
一般社団法人日本機械学会の論文
1991-05-15