HOMARD : Following a surface in 3D
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Presentation
When a piece is meshed, the mesh doesn't always follow the real shape. So when refining a piece some elements of the border are to be refined too, it can be interesting to follow the real surface. Today, if the piece is a part of a cylinder or a sphere, it is possible. If the user has given the caracteristic of the element in the file HOMARD.CONFIGURATION, when refining an element, HOMARD® is able to project the element that has been marked as belonging to the entity through the belonging to a group.
Application to a Nozzle
In the case of a nozzle, we have four cylinders, that is not a problem because thanks to the choice of the algorithm HOMARD® can deal with many part of cylinders and spheres. The difficulty here is to take into account the fronteer between two cylinders. We introduced a new functionality that permits to follow a curve in 3D. When user has described in the initial mesh a fine discretisation of the curve and associated the edges corresponding to the curve, when the edges are cut Homard® project their middle on the curve, which permits iteretion after iteration to follow the curves more precisely. We present on the following figures an example of a nozzle refined 4 times.
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