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in subjects: "Turbines"

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One-Dimensional Analysis of Choked-Flow Turbines

"Turbines for most applications requiring high work output per stage have one or more blade rows which are choked. This analysis indicated that the area ratios and equivalent blade speed are the controlling factors in the design and operation of such turbines. Six criteria are stated that will aid in establishing from test data of multistage turbines which blade rows are choked and which are not" (p. 1).

Date: 1953

Creator: English, Robert E. & Cavicchi, Richard H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Secondary flows and boundary-layer accumulations in turbine nozzles

An investigation of secondary-flow loss patterns originating in three sets of turbine nozzle blade passages was conducted by means of flow-visualization studies and detailed flow measurements. For all cases, high loss values were measured in the fluid downstream of the corners formed by the suction surfaces of the blades and the shrouds, and these losses were accompanied by discharge-angle deviations from design values. Despite the size of the loss regions and angle gradients, over-all mass-ave… more

Date: April 30, 1953

Creator: Rohlik, Harold E.; Kofskey, Milton G.; Allen, Hubert W. & Herzig, Howard Z.