Numerical calculation of steady inviscid full potential compressible flow about wind turbine bladesThe air flow through a propeller-type wind turbine rotor is characterized by three-dimensional rotating cascade effects about the inner portions of the rotor blades and compressibility effects about the tip regions of the blades. In the case of large rotor diameter and/or increased rotor angular speed, the existence of small supersonic zones terminated by weak shocks is possible. An exact nonlinear mathematical model (called a steady Full Potential Equation - FPE) that accounts for the above phenomena has been rederived. An artificially time dependent version of FPE was iteratively solved by a finite volume technique involving an artificial viscosity and a three-level consecutive mesh refinement. The exact boundary conditions were applied by generating a boundary conforming periodic computation mesh.
Document ID
19800044634
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Dulikravich, D. S. (NASA Lewis Research Center Cleveland, Ohio, United States)