A stage-by-stage post-stall compression system modeling technique
A stage-by-stage post-stall compression system modeling technique
- New search for: Davis, M.W.
- New search for: O'Brien, W.F.
- New search for: Davis, M.W.
- New search for: O'Brien, W.F.
A one-dimensional, stage-by-stage axial compression system mathematical model has been constructed which can describe system behavior during post-stall events such as surge and rotating stall. The model uses a numerical technique to solve the nonlinear conservation equations of mass, momentum, and energy. Inputs for blade forces and shaft work are provided by a set of quasi-steady stage characteristics modified by a first-order lagging equation to simulate dynamic stage characteristics. The model was validated with experimental results for a three-stage, low-speed compressor and a ninestage, high-pressure compressor. Using the model, a parametric study was conducted to determine the effect on post-stall system behavior of inlet resistance, combustor performance, heat transfer, and stage characteristic changes. Results demonstrate a new capability for the analysis of design options and operating conditions on compression system poststall behavior.
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A stage-by-stage post-stall compression system modeling technique
Methode zur stufenweisen Berechnung und Modellierung von Druckverhaeltnissen nach Eintreffen des ueberzogenen Flugzustands
AIAA-Papers ; Jul ; 1-14
1987
14 Seiten, 23 Bilder, 17 Quellen
Conference paper
English
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