In this article, we provide a detailed survey of techniques for hexahedral mesh generation. We cover the whole spectrum alternative approaches to generation, as well post-processing algorithms connectivity editing and optimization. For each technique, highlight capabilities limitations, also pointing out associated unsolved challenges. Recent relaxed approaches, aiming generate not pure-hex but...

A more automatic method for generation of tetrahedra and directional surface meshes are the two developments presented in this paper. Un-structured grids are generated for complex 3-D ge-ometries including multi-body domains. A combined octree-advancing front method is presented for the generation of the unstructured surface mesh as well as the tetrahedral volume mesh. The unique feature of thi...

In this paper, we propose a robust isotropic tetrahedral mesh generation method. An advancing front method is employed to control local mesh density and to easily preserve the original connectivity of boundary surfaces. Tetrahedra are created by each layer. Instead of preparing a background mesh for mesh spacing control, this information is estimated at the beginning of each layer at each node ...

We propose a new method for limiting the gradients in a mesh size function by solving a non-linear partial differential equation on the background mesh. Our gradient limiting Hamilton-Jacobi equation simplifies the generation of mesh size functions significantly, by decoupling size constraints at specific locations from the mesh grading requirements. We derive an analytical solution for convex ...

This work presents a new technique for generating the base mesh for an adaptive mesh generated by a sketch based modeling system. The method uses topology information of the region inside a closed curve to create a good quality base mesh, with controlled vertex valence, and few irregular vertices. The base mesh is refined using an inflation of the region inside the curve to form the final mesh....

Wireless Mesh Networks (WMNs) are emerging as promising, convenient next generation wireless network technology. There is a great need for a secure framework for routing in WMNs and several research studies have proposed secure versions of the default routing protocol of WMNs. In this paper, we propose a security framework for Hybrid Wireless Mesh Protocol (HWMP) in WMNs. Contrary to existing s...