In this paper, we use moving mesh fintie element method based upon 4P1 − P1 element to solve the time-dependent Navier-Stokes equations in 2D. Twolayer nested meshes are used including velocity mesh and pressure mesh, and velocity mesh can be obtained by globally refining pressure mesh. We use hierarchy geometry tree to store the nested meshes. This data structure make convienence for adaptive ...

In this paper, we propose a new scheme for sending three-dimensional (3-D) mesh models. In order to make a viewdependent representation of 3-D mesh models, we combine sequential and progressive mesh transmission techniques. After we partition a 3-D mesh model into a hierarchical tree, we determine the amount of information for each submesh. Then, we can send the 3-D model information by view-de...

The finite element mesh regeneration, which is usually required during the design model verification process, is time consuming. Mesh editing is a kind of efficient mesh regeneration technique. In this paper, a direct editing method for hexahedral mesh is proposed to achieve high quality and adaptive hexahedral mesh regeneration. After the user applies direct editing on the CAD model, effective...

OBJECTIVE Determine whether absorbable or nonabsorbable mesh in repair of large hiatus hernias reduces the risk of recurrence, compared with suture repair. BACKGROUND Repair of large hiatus hernia is associated with radiological recurrence rates of up to 30%, and to improve outcomes mesh repair has been recommended. Previous trials have shown less short-term recurrence with mesh, but adverse ...

We present an algorithm to generate a one-sided approximation of a given triangular mesh. We refer to such an approximate mesh as a bounding mesh, which includes the original mesh and has fewer vertices. Likewise, an inner bounding mesh is defined as an approximate mesh that is included by a given mesh. Our proposed bounding mesh algorithm performs iterative edge contractions and can generate b...

in this research, the effect of wood species and particle size on mechanicalproperties of wood plastic composites (wpc) made of fir (abies alba) and beech(fagus orientalis l.) sawdust and high density polyethylene (hdpe) wereinvestigated. wood plastic composite (wpc) were made with 30% hdpe in abatch process at 185˚c, at two particle sizes of 40 mesh and 80 mesh. maleicanhydride polypropylene (...

This paper introduces a new automatic tetrahedral mesh generator on the adaptive finite element ALBERTA code. The procedure can be applied to 3D domains with boundary surfaces which are projectable on faces of a cube. The generalization of the mesh generator for complex domains which can be split into cubes or hexahedra is straightforward. The domain surfaces must be given as analytical or disc...

Abstract Optical mesh networks using intelligent optical cross-connects are the choice for the next generation optical core. Mesh networks can be designed for fast and guaranteed recovery from single failures and can be designed to protect traffic more efficiently via shared mesh restoration. In this paper, we present a mesh restoration architecture for the optical core. The architecture provid...

We introduce a new type of meshes called 5-6-7 meshes. For many mesh processing tasks, lowor high-valence vertices are undesirable. At the same time, it is not always possible to achieve complete vertex valence regularity, i.e., to only have valence-6 vertices. A 5-6-7 mesh is a closed triangle mesh where each vertex has valence 5, 6, or 7. An intriguing question is whether it is always possibl...

Incisional hernias following abdominal operations are a common complication. Mesh is frequently employed in repair of these hernias. Mesh migration is an infrequent occurrence. We present the case of transmural mesh migration from the abdominal wall into the ceacum presenting as chronic abdominal pain. Given the popularity of minimally invasive surgery utilizing polypropylene mesh for incisiona...