A Flexible Spring-Based Unstructured Grid Deformation Strategy

This article extends a simple and computationally low cost 2D unstructured grid ordering strategy based on edges connectivity order and direction around the object. An automatic successive small deformation strategy is used in this article which gives us more ability to address the large scale deformation. The advancing front concept is utilized to accelerate the convergence rate of movement numerical iteration. This provides the substantial rule to determine the regions which must be deformed automatically. It also provides an efficient way to storing the numerical iterative paths. Finally, a flexible and efficient deformation algorithm is presented to handle problem with different scale deformation orders. In this work all, foregoing procedures are automatically accomplished so that the deformation procedure do not need tuning any parameter in the domain. The method is presented in 2D unstructured dynamic grid while it is prove to be extended to 3D applications. A few examples are presented here; they indicate high capability of the current method handling moving boundary problems with large scale deformation.