... Even with this illustrative analysis, the total elapsed time remains the most important factor. However, engineers may consider the ratio of linear iterations to nonlinear steps as one of the many relative indicators of how much a problem lends itself to CPU or GPU hardware. Conclusions...

... high-contrast heterogeneous field model. upstream oil & gas flow in porous media united kingdom government solver fluid dynamics reservoir simulation scaling method artificial intelligence linear iteration num prolongation operator boundary modeling & simulation algorithm...

... Abstract The objective of this work is to avoid wasteful timestep cuts of the reservoir simulator by developing a timestep-selector that controls the linear and non-linear iterations as well as the physical quantities. Using a Fuzzy logic framework, a non-linear timestep selector has been...

.... reservoir simulation ilu preconditioner cpu core CPR preconditioner flow in porous media linear system iteration linear iteration University Modeling & Simulation Fluid Dynamics preconditioner performance adaptive strategy nonlinear iteration preconditioner Upstream Oil & Gas spe...

... convergence problems of the CPR-AMG method for large-scale thermal models. We observed significant reduction in the number of linear iterations (47-68%) but only modest reduction in runtime (0-26%) for these moderately difficult test simulations. This is partly due to some of the implementation short-cuts...

... The average numbers of linear iterations and normalized total simulator runtimes are shown for field models 1 to 6 and synthetic model 1 in Figures 1 and 2 , respectively. The SWIFT algorithm was found to reduce the average number of linear iterations by 62-96% and total simulation runtime...

.... reservoir simulation node iteration constraint bottom-hole node Upstream Oil & Gas pressure constraint global linear iteration pressure matrix GEA method rate constraint network domain mass balance equation surface facility process simulation reservoir domain active constraint solver...