Analytical and Experimental Investigation Of Flow Fields Of Annular Jets With And Without Swirling Flow

摘要

Analytical and experimental studies were performed to define the flowfield of annular jets, with and without swirling flow. The analytical model treated configurations with variations of flow angularities, radius ratio and swirl distributions. Swirl distributions characteristic of stator vanes and rotor blade rows, where the total pressure and swirl distributions are related were Incorporated in the mathematical mode.nThe experimental studies included tests of eleven nozzle models, both with and, without swirling exhaust flow. Flowfield surveys were obtained and used for comparison with the analytical model. This comparison of experimental and analytical studies served as the basis for evaluation, of several empirical constants as required for application of the analysis to the general flow configuration.nThe analytical model developed during these studies is applicable to the evaluation of the flowfield and overall performance of the exhaust of statorless lift fan system that contain various levels of exhaust swirl.