A rapid and accurate numerical method is presented for the calculation of two-dimensional potential flow in cascades. The integral form of continuity is approximated over finite areas in the physical plane, allowing the grid flexibility required by the periodicity, turning, thickness, and stagger of cascades of practical interest, and yielding second-order accuracy on appropriate meshes. Excellent agreement between predictions and analytic or measured results are shown for subsonic and transonic test cases. A model problem stability analysis supports the experimental observation that the procedure is unconditionally stable for subsonic flow and conditionally stable for transonic flow. (Jensen)
Calculation of two-dimensional potential cascade flow using finite area methods
Berechnung der zweidimensionalen Potentialstroemung in Kaskaden nach finite Elemente Methoden
AIAA Journal ; 18 , 1 ; 103-109
1980
7 Seiten, 9 Bilder, 2 Tabellen, 13 Quellen
Aufsatz (Zeitschrift)
Englisch
BERECHNUNGSVERFAHREN , ZEITEINSPARUNG , GENAUIGKEIT , POTENZIALSTROEMUNG , KASKADENGRUPPE , TRAGFLUEGEL , TRAGFLUEGELUMSTROEMUNG , MATHEMATISCHES MODELL , DICKE , STROEMUNGSVERTEILUNG , VORHERSAGE , TRANSSONISCHE STROEMUNG , UNTERSCHALLGESCHWINDIGKEIT , UNTERSCHALLSTROEMUNG , ZWEIDIMENSIONALE STROEMUNG , PRAKTISCHE UNTERSUCHUNG