In this paper, we apply our proposed early parallel adaptive computing methodology for numerical solution of semiconductor device equations with triangular meshing technique. This novel simulation based on adaptive triangular mesh, finite volume, monotone iterative, and a posteriori error estimation methods, is developed and successfully implemented on a Linux-cluster with message passing inter...

Multiblock structured meshes offer better computational efficiency than the unstructured meshes which, on the other hand, are more flexible for complex geometries. The multiblock structured meshing could be more useful if the partitioning of the domain can be performed automatically. In this paper, we consider various automated blocking approaches for some turbomachinery zones. We then assess t...

Large eddy simulation techniques offer a wealth of valuable information for engineering design purposes, but in many cases the required mesh resolution is prohibitive. Combining the dynamic LES procedure with unstructured mesh adaptivity offers a robust and efficient way of capturing the inhomogeneity and anisotropy of complex turbulent flows. However, this may result in a non-vanishing commuta...

This paper introduces the concept of the ‘sensitivity chart’ as an applied tool to evaluate the effect of profile modifications on the load factor of gears with stochastic indexing errors and to find optimal solutions. The embedded ability to evaluate different solutions simultaneously also allows the analysis of the sensitivity of technical designs to variations in the manufacturing parameters...

We propose a new method for an auto-meshing algorithm for an acoustic analysis of the vocal tract using the Finite Element Method (FEM). In our algorithm, the domain of the 3 dimensional figure of the vocal tract is decomposed into two domains; one is a surface domain and the other is an inner domain in order to employ the overlapping domain decomposition method. The meshing of surface blocks c...

Most modern meshing algorithms produce asymptotically optimal size output. However, the size of the optimal mesh may not be bounded by any function of n. In this paper, we introduce well-paced point sets and prove that these will produce linear size outputs when meshed with any “size-optimal” meshing algorithm. This work generalizes all previous work on the linear cost of balancing quadtrees. W...

3D meshing tools are complex pieces of software involving varied algorithms generally with high computing demands. New requirements and techniques appear continuously and being able to incorporate them into existing tools helps keep them up to date. Modifying complex software is generally a complex task and software engineering strategies such as object-orientation and design patterns promote m...

Large-scale simulation and high quality of microwave brightness temperature imaging is the key technology for passive target detection. We applied the space meshing ray tracing method for brightness temperature tracing to establish a model of tracing and inversion. Simulated images were then compared with the measured images to verify the effectiveness of the proposed method. Results showed tha...

Ideally, a mesh should represent the initial shape of a structure in such precision that will ensure the accuracy of the results. Furthermore, especially for small features, where stresses are higher, the description should be even more accurate. Generating, however, a fine mesh globally would add up to computational costs. In addition, it is not always obvious which areas should be manually re...

The bounda y element method (BEM) is well suited for the electrostatic analysis of large, geometrically complex structures. When highly accurate solutions are required, the discretization (meshing) of the geometry becomes increasingly important. A scheme is required to construct optimal meshes, in the sense that maximum accuracy of the solution can be achieved with minimal computational eflort....