“…In the present study, the strength of predictor-corrector Adams technique [22,23] and explicit Runge-Kutta numerical technique [24,25] is exploited to solve the second-order prediction differential model.…”
In this study, a novel second-order prediction differential model is designed, and numerical solutions of this novel model are presented using the integrated strength of the Adams and explicit Runge–Kutta schemes. The idea of the present study comes to the mind to see the importance of delay differential equations. For verification of the novel designed model, four different examples of the designed model are numerically solved by applying the Adams and explicit Runge–Kutta schemes. These obtained numerical results have been compared with the exact solutions of each example that indicate the performance and exactness of the designed model. Moreover, the results of the designed model have been presented numerically and graphically.
“…In the present study, the strength of predictor-corrector Adams technique [22,23] and explicit Runge-Kutta numerical technique [24,25] is exploited to solve the second-order prediction differential model.…”
In this study, a novel second-order prediction differential model is designed, and numerical solutions of this novel model are presented using the integrated strength of the Adams and explicit Runge–Kutta schemes. The idea of the present study comes to the mind to see the importance of delay differential equations. For verification of the novel designed model, four different examples of the designed model are numerically solved by applying the Adams and explicit Runge–Kutta schemes. These obtained numerical results have been compared with the exact solutions of each example that indicate the performance and exactness of the designed model. Moreover, the results of the designed model have been presented numerically and graphically.
The nonhydrostatic High-Order Method Modeling Environment (HOMME-NH) atmospheric dynamical core supports acoustic waves that propagate significantly faster than the advective wind speed, thus greatly limiting the time step size that can be used with standard explicit time integration methods. Resolving acoustic waves is unnecessary for accurate climate and weather prediction. This numerical stiffness is addressed herein by considering implicit-explicit additive Runge-Kutta (ARK IMEX) methods that can treat the acoustic waves in a stable manner without requiring implicit treatment of nonstiff modes. Various ARK IMEX methods are evaluated for their efficiency in producing accurate solutions, ability to take large time step sizes, and sensitivity to grid cell length ratio. Both the gravity wave test and baroclinic instability test from the 2012 Dynamical Core Model Intercomparison Project are used to recommend 5 of the 27 ARK IMEX methods tested for use in HOMME-NH. (E3SM) is an ongoing effort to produce actionable projections of variability and change in the Earth system. Advances in computational power have allowed endeavors like E3SM to simulate physical phenomena at finer resolution than ever before. Modeling the atmosphere at these finer resolutions requires improving both the underlying mathematical models and computational techniques. This works focuses on the latter by evaluating cutting-edge computational techniques on a recently developed atmosphere model and suggesting which of those techniques should be included in the next generation of E3SM.
Plain Language Summary The Energy Exascale Earth System Model
“…[25] and IMEX-DIM-SIM3 from [14]. At order 4, comparisons are done against ARK4(3)7L[2]SA 1 from [26] and IMEX-DIMSIM4 from [35]. Order 5 serial methods are ARK5(4)8L[2]SA 2 from [26] and IMEX-DIMSIM5 from [35].…”
Section: Allen-cahn Problemmentioning
confidence: 99%
“…At order 4, comparisons are done against ARK4(3)7L[2]SA 1 from [26] and IMEX-DIMSIM4 from [35]. Order 5 serial methods are ARK5(4)8L[2]SA 2 from [26] and IMEX-DIMSIM5 from [35]. Finally, the order 6 baseline is IMEX-DIMSIM6(S ∕2 ) from [24].…”
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