lbs.XXPowerIterationKEigen

Generalized implementation of a k-Eigenvalue solver using Power Iteration.

Example usage:

Create this object:

params = 
{
    param_name1 = value1,
    param_name2 = value2,
    --etc.
}
lbs.XXPowerIterationKEigen.Create(params)

Required Input parameters

►lbs_solver_handle       Handle to an existing lbs solver

type=INTEGER. Handle to an existing lbs solver

Optional Input parameters

►dt       Desired initial timestep size

type=FLOAT. Desired initial timestep size.

Default value: 0.01(double)

Allowable values: >= 1e-12(double)

►end_time       Transient end-time if applicable

type=FLOAT. Transient end-time if applicable.

Default value: 1(double)

►k_tol       Tolerance on the k-eigenvalue

type=FLOAT. Tolerance on the k-eigenvalue

Default value: 1e-10(double)

►max_iters       Maximum power iterations allowed

type=INTEGER. Maximum power iterations allowed

Default value: 1000

►max_time_steps       Maximum number of timesteps to allow

type=INTEGER. Maximum number of timesteps to allow. Negative values disables this.

Default value: -1

►name       A text name to associate with the solver

type=STRING. A text name to associate with the solver. This name will be used in status messages and verbose iterative convergence monitors.

Default value: "XXPowerIterationKEigen"

►reinit_phi_1       If true, reinitializes scalar phi fluxes to 1

type=BOOLEAN. If true, reinitializes scalar phi fluxes to 1

Default value: true

►reset_solution       Flag, if set to true will initialize the phi-solution to all 1's before executing

type=BOOLEAN. Flag, if set to true will initialize the phi-solution to all 1's before executing

Default value: true

►start_time       Transient start-time if applicable

type=FLOAT. Transient start-time if applicable.

Default value: 0(double)

►time       Current time of the solver

type=FLOAT. Current time of the solver.

Default value: 0(double)

►timestepper       Handle to a timestepper

type=INTEGER. Handle to a timestepper. If not supplied then a ConstantTimeStepper will be created.

Default value: 0

Usage Examples:

test/modules/LinearBoltzmannSolvers/MGDiffusion_KEigen/KEigenvalueMIP2D_1a_QBlock.lua
test/modules/LinearBoltzmannSolvers/Transport_Keigen/KEigenvalueTransport2D_1c_QBlock_CBC.lua
test/modules/LinearBoltzmannSolvers/Transport_Keigen/KEigenvalueTransport2D_1c_QBlock.lua
test/modules/LinearBoltzmannSolvers/Transport_Keigen/KEigenvalueTransport2D_1a_QBlock_CBC.lua
test/modules/LinearBoltzmannSolvers/Transport_Keigen/KEigenvalueTransport2D_1a_QBlock.lua
test/modules/LinearBoltzmannSolvers/Transport_Keigen/c5g7/c5g7.lua