Application of 3D Strand Mesh Technology to Rotorcraft Hover

Speaker: Andrew Wissink, US Army Aviation Development Directorate, NASA Ames Research Center
March 3, 2015

Presentation

Abstract

This talk will discuss recent developments in an automated volume mesh generation capability based on "strands" and its application to hover calculations. This new approach is being developed as a means to to enhance automation in Helios, the Army's high-fidelity CFD/CSD rotorcraft simulation code. The volume mesh is composed of strand grids in the near-body to resolve the viscous boundary layer and Cartesian grids in the off-body to resolve the wake. Single and multi-strand per surface vertex strand meshes are evaluated. Both the near-body strand and off-body Cartesian mesh are generated in an automated fashion at runtime using minimal inputs. The automated meshing scheme is evaluated for calculations of the TRAM rotor in hover, comparing to results obtained on traditional unstructured near-body meshes as well as structured near body meshes using OVERFLOW.

Biography

Andrew Wissink works for the US Army Aerodynamics Development Directorate located at NASA Ames Research Center. He has participated in the development of the Helios code since he joined the Army in 2006. Before that he worked at Lawrence Livermore National Lab from 1999-2006 and at NASA Ames from 1996-1999. He received his PhD from the University of Minnesota in 1997.

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