Patent ID: 9087165
Filing Date: 2015-07-21
Classification: G06F

Abstract:
1. A computer-implemented method of defining a datum line on a surface mesh of an aerofoil for use in a simulation, the surface mesh of the aerofoil including nodes interconnected by edges, the method comprising the steps of: a) defining a reference coordinate system including a direction X with respect to the aerofoil; b) defining a span variable that varies monotonically along the aerofoil in a forwards marching direction that is not coincident with the direction X; c) selecting a first frontal node n d) using a Pareto front algorithm to define a datum line at an extremity of the surface mesh with respect to the X direction of the aerofoil, the Pareto front algorithm evaluating a criterion for dominated nodes and operating on a Pareto variable to select successive connected frontal nodes that form the datum line of the aerofoil, wherein the Pareto variable is the X coordinate and the criterion for dominated nodes is a span value less than that of the selected frontal node n e) outputting the defined datum line such that a geometrical feature of the aerofoil is identified for determining a fluid flow domain of a fluid flow across a surface of the aerofoil.