A HELICOPTER ROTOR MODELLING AND MESHING SYSTEMH. Eldem Uzun, Kaan Yutuk, Ozgur Ugras Baran and Mehmet Haluk Aksel Helicopter rotors in flight constitute a fairly complex wing geometry and exhibit motion in several axes. As a result, rotor motion creates quite complex flow patterns, and unlike fixed wings, flow around each rotor blade interacts with each other. These complexities make the analysis of the rotor flow is a challenge for CFD solvers. The challenge starts with very high requirements on the quality of the computational mesh. A modern helicopter rotor involves a number of different airfoil sections, complex profile blending, twists and other complexities. Moreover, blade tip geometry can be selected from a wide variety of candidates. In this study, we present the results of our fully automatized rotor geometry and solution domain generation tool. With the new tool a rotor with a very high complexity with any number of blades can be generated, and a very high quality multi-block and conformal meshes are produced. The new tool is tested with known helicopter rotors and CFD solutions are calculated. |