Previous work by the authors has developed an efficient method for using radial basis functions to achieve high quality mesh motion for large meshes. This method starts by using a chosen error function on the surface mesh to select a subset of the surface ponts; this subset gives a low surface position error and contains a sufficiently small number of points, so as to make the volume motion fast. However, alternatives exist for the error function so here a comparison is made between three different options: the surface error function, the unit function and the power function. Tests run on a structured wing mesh and an unstructured aircraft mesh show that the surface error function gives the lowest errors, but this also requires a deformed surface shape to be known in advance of the simulation. The unit and power functions both avoid the need for a deformed surface, and the unit function is superior as it leads to lower errors.
|Translated title of the contribution||Point selection approaches for reduced surface representation in mesh motion|
|Title of host publication||27th AIAA Applied Aerodynamics Conference, San Antonio, Texas, USA|
|Publisher||American Institute of Aeronautics and Astronautics Inc. (AIAA)|
|Number of pages||10|
|Publication status||Published - Jun 2009|
Bibliographical noteConference Organiser: AIAA
Other identifier: AIAA 2009-3850