3 Quick tutorial 4 3.1 Mode 0: Steady-state, fixed spatial grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.2 Mode 1: Linear heat equation, fixed spatial grid and fixed time step size . . . . . . . . . . . . 7 3.3 Mode 2: Linear heat equation, fixed spatial grid and adaptive time stepping . . . . . . . . . . 7 3.4 Mode 3: Linear heat equation, adaptive spatial refinement and...

An adaptive quadtree grid generation algorithm is developed and applied for tracer and multiphase flow in channelized heterogeneous porous media. Adaptivity was guided using two different approaches. In the first approach, wavelet transformation was used to generate a refinement field based on permeability variations. The second approach uses flow information based on the solution of an initial...

An algorithm of approximation for discrete initial numerical flow f by the first order splines, associated with the adaptive grid, is proposed. Quantitative evaluations for volumes of using data are obtained under different characteristics of regularity of initial flow. Limit characteristics of mentioned volumes are represented. Difference representations for deviation of data flow from approxi...

The use of overset grids in CFD started more than two decades ago, and has achieved tremendous success in handling complex geometries. In particular, overset grids have the advantage of avoiding grid remeshing when dealing with moving boundary flow problems. Traditionally overset grids were mainly used with structured grids to simplify the grid generation process, because a complex computationa...

The Grid provides facilities that support the coordinated use of diverse resources, and consequently, provides new opportunities for wide-area query processing. However, Grid resources, as well as being heterogeneous, may also exhibit unpredictable, volatile behaviour. Thus, query processing on the Grid needs to be adaptive, in order to cope with evolving resource characteristics, such as machi...