Numerical study with OpenFOAM on heat conduction problems in heterogeneous media
Abstract OpenFOAM was used to numerically investigate heat conduction in heterogeneous media. The main advantage of this platform is that it offers an open flexible interface with great convenience for mesh generation and solver modification. Cases of 1D and 2D heat conduction problems in media with different levels of heterogeneity were considered to check the performance of OpenFOAM. The results were compared with references and other commercial software and showed good accuracy. Note that all of the processes, including the mesh generation, numerical simulation, and post-processing, relied on free open-source codes.
More recent studies have proposed that the multi-fractal of traffic has great impact on network performances, and it is important to build the predicting model based on multi-fractal for the network.. This paper studies on the ethernet passive optical network to analysis the default of bandwidth allocation algorithm, and proposes a new predicting model on FARIMA for bandwidth allocation, that it has the great accuracy of queque predicting in the multi-fractal, and it proves the correction of model by the prediction of real traffic.