This paper summarizes results obtained from a method that solves both the three dimensional thin-layer Navier-Stokes equations and Euler equations for a helicopter rotor flowfield using embedded structured and unstructured grids. The embedded structured grids use an implicit finite-difference method to solve the thin-layer Navier-Stokes equations for the regions close to the rotor blade. The structured grids lie within an unstructured grid that uses an explicit finite-volume method to solve the Euler equations and convect the vorticity downstream onto the following blades. The paper presents a description of the method, the grids systems used and a rotor in hover validation case. Although the current grid system does not adequately resolve the tip vortex core, the computed vortex paths and load predictions demonstrate the methods feasibility.


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    Title :

    A structured/unstructured embedded grid solver for helicopter rotor flows


    Additional title:

    Ein strukturierter/unstrukturierter eingebetteter Gitter-Lösungsansatz für Strömungen an Rotorblättern von Hubschraubern


    Contributors:


    Publication date :

    1994


    Size :

    10 Seiten, 15 Bilder, 1 Tabelle, 20 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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