TURBOTECH. Teilvorhaben 1.1.2.7: Berechnung der reibungsbehafteten Stroemung in Turbinengittern mit Hilfe eines partiell-parabolischen Verfahrens und Kopplung mit einem weiterzuentwickelnden Quasi-3D-Through-Flow-Verfahren Abschlussbericht

For the calculation of multi-stage turbines it is common practice to use inviscid duct-flow and through-flow methods which make an attempt to acquire frictional influences by appropriate models for taking into account the clearance and secondary flows as well as losses. Even against the backdrop of rapidly increasing computer capacities such methods are indispensible with regard to reasonable CPU times for multi-stage machines. One disadvantage of the models and empirical correlations used for this purpose is that they rely on existing airfoil families. For this reason these loss models certainly cannot approximate the real blade geometry and the flow field lying within it as good as any calculation of the viscous three-dimensional flow in the individual cascade does. The objective of this project is to determine and test an improved loss modeling for a quasi-three-dimensional through-flow method on the basis of individual cascade calculations by means of an available 3-d Navier-Stokes method in accordance with Weskamp based on the work of Luecking and Lawrenz. (orig.)SIGLEAvailable from TIB Hannover: F95B1757+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman