parameters_2d Module Reference

Parameters. More...

Data Types
type	bc

Variables
real *8	eps_newton
	threshold for the convergence of the Newton's method More...
real *8	dt0
	Initial time step. More...
real *8	max_dt
	Largest time step allowed. More...
real *8	cfl
	Courant-Friedrichs-Lewy parameter. More...
real *8	eps_sing
	parameter for desingularization More...
real *8	reconstr_coeff
	Slope coefficient in the linear reconstruction. More...
logical	interfaces_relaxation
	Flag to add the relaxation terms after the linear reconstruction: . More...
logical	topography_function_flag
	Flag to choose in which way we upload the topography. More...
logical	topography_demfile
	Flag for uploading topography from a different file (topography_dem.asc) More...
logical	energy_flag
	Flag to choose the equation for temperature to solve. More...
logical	riemann_flag
	Flag to choose the sort of problem to solve. More...
logical	rheology_flag
	Flag to choose if we add the rheology. More...
integer	rheology_model
	choice of the rheology model More...
logical	liquid_flag
logical	gas_flag
logical	topo_change_flag
logical	radial_source_flag
real *8	x_source
real *8	y_source
real *8	r_source
real *8	vel_source
real *8	t_source
real *8	h_source
real *8, dimension(:), allocatable	alphas_source
real *8	alphal_source
real *8, dimension(4)	time_param
logical	collapsing_volume_flag
real *8	x_collapse
real *8	y_collapse
real *8	r_collapse
real *8	t_collapse
real *8	h_collapse
real *8, dimension(:), allocatable	alphas_collapse
real *8	released_volume
	Initial volume of the flow. More...
real *8	x_release
	Initial x-coordiante of the pile. More...
real *8	y_release
	Initial y-coordinate of the pile. More...
real *8	velocity_mod_release
	Initial velocity module of the pile. More...
real *8	velocity_ang_release
	Initial velocity direction (angle in degree): . More...
real *8	t_init
	Initial temperature of the pile of material. More...
real *8, dimension(:), allocatable	alphas_init
	Initial sediment concentration in the pile of material. More...
real *8, dimension(:), allocatable	sed_vol_perc
integer	n_vars
	Number of conservative variables. More...
integer	n_eqns
	Number of equations. More...
integer	n_solid
	Number of solid classes. More...
integer	n_nh
	Number of non-hyperbolic terms. More...
integer	n_rk
	Runge-Kutta order. More...
integer, parameter	max_nl_iter = 100
real *8, parameter	tol_abs = 1.D-5
real *8, parameter	tol_rel = 1.D-5
integer, dimension(10)	limiter = -1
	Limiter for the slope in the linear reconstruction: . More...
character(len=20)	solver_scheme
	Finite volume method: . More...
real *8	theta
	Van Leer limiter parameter. More...
real *8	t_start
	initial time for the run More...
real *8	t_end
	end time for the run More...
real *8	t_output
	time of the next output More...
real *8	dt_output
	time interval for the output of the solution More...
real *8	t_runout
	time of the next runout output More...
real *8	t_steady
	end time when reached steady solution More...
integer	verbose_level
type(bc), dimension(:), allocatable	bcw
	bcW&flag defines the west boundary condition: More...
type(bc), dimension(:), allocatable	bce
	bcE&flag defines the east boundary condition: More...
type(bc), dimension(:), allocatable	bcs
	bcS&flag defines the south boundary condition: More...
type(bc), dimension(:), allocatable	bcn
	bcN&flag defines the north boundary condition: More...

Detailed Description

Parameters.

This module contains the parameters for numerical solution of the model.

Variable Documentation

real*8 parameters_2d::alphal_source

Definition at line 82 of file parameters_2d.f90.

real*8, dimension(:), allocatable parameters_2d::alphas_collapse

Definition at line 93 of file parameters_2d.f90.

real*8, dimension(:), allocatable parameters_2d::alphas_init

Initial sediment concentration in the pile of material.

Definition at line 120 of file parameters_2d.f90.

real*8, dimension(:), allocatable parameters_2d::alphas_source

Definition at line 81 of file parameters_2d.f90.

type(bc), dimension(:), allocatable parameters_2d::bce

bcE&flag defines the east boundary condition:

• bcEflag = 0 => Dirichlet boundary condition;
• bcEflag = 1 => Neumann boundary condition.

bcEvalue is the value of the right boundary condition:

• value of the variable for Dirichlet boundary condition (bcEflag=0);
• gradient of the variable for Neumann boundary condition (bcEflag=1).

Definition at line 188 of file parameters_2d.f90.

type(bc), dimension(:), allocatable parameters_2d::bcn

bcN&flag defines the north boundary condition:

• bcNflag = 0 => Dirichlet boundary condition;
• bcNflag = 1 => Neumann boundary condition.

bcNvalue is the value of the top boundary condition:

• value of the variable for Dirichlet boundary condition (bcNflag=0);
• gradient of the variable for Neumann boundary condition (bcNflag=1).

Definition at line 208 of file parameters_2d.f90.

type(bc), dimension(:), allocatable parameters_2d::bcs

bcS&flag defines the south boundary condition:

• bcSflag = 0 => Dirichlet boundary condition;
• bcSflag = 1 => Neumann boundary condition.

bcSvalue is the value of the bottom boundary condition:

• value of the variable for Dirichlet boundary condition (bcSflag=0);
• gradient of the variable for Neumann boundary condition (bcSflag=1).

Definition at line 198 of file parameters_2d.f90.

type(bc), dimension(:), allocatable parameters_2d::bcw

bcW&flag defines the west boundary condition:

• bcWflag = 0 => Dirichlet boundary condition;
• bcWflag = 1 => Neumann boundary condition.

bcLWvalue is the value of the left boundary condition:

• value of the variable for Dirichlet boundary condition (bcWflag=0);
• gradient of the variable for Neumann boundary condition (bcWflag=1).

Definition at line 178 of file parameters_2d.f90.

real*8 parameters_2d::cfl

Courant-Friedrichs-Lewy parameter.

Definition at line 18 of file parameters_2d.f90.

logical parameters_2d::collapsing_volume_flag

Definition at line 86 of file parameters_2d.f90.

real*8 parameters_2d::dt0

Initial time step.

Definition at line 14 of file parameters_2d.f90.

real*8 parameters_2d::dt_output

time interval for the output of the solution

Definition at line 157 of file parameters_2d.f90.

logical parameters_2d::energy_flag

Flag to choose the equation for temperature to solve.

• T => solve the full energy equation
• F => solve for a simpler transport equation (advection) for temperature

Definition at line 47 of file parameters_2d.f90.

real*8 parameters_2d::eps_newton

threshold for the convergence of the Newton's method

Definition at line 11 of file parameters_2d.f90.

real*8 parameters_2d::eps_sing

parameter for desingularization

Definition at line 20 of file parameters_2d.f90.

logical parameters_2d::gas_flag

Definition at line 69 of file parameters_2d.f90.

real*8 parameters_2d::h_collapse

Definition at line 92 of file parameters_2d.f90.

real*8 parameters_2d::h_source

Definition at line 80 of file parameters_2d.f90.

logical parameters_2d::interfaces_relaxation

Flag to add the relaxation terms after the linear reconstruction:
.

• T => evaluate the relaxation terms
• F => reconstruction without the relaxation

Definition at line 28 of file parameters_2d.f90.

integer, dimension(10) parameters_2d::limiter = -1

Limiter for the slope in the linear reconstruction:
.

• 'none' => no limiter (constant value);
• 'minmod' => minmod slope;
• 'superbee' => superbee limiter (Roe, 1985);
• 'van_leer' => monotonized central-difference limiter (van Leer, 1977)

Definition at line 144 of file parameters_2d.f90.

logical parameters_2d::liquid_flag

Definition at line 67 of file parameters_2d.f90.

real*8 parameters_2d::max_dt

Largest time step allowed.

Definition at line 16 of file parameters_2d.f90.

integer, parameter parameters_2d::max_nl_iter = 100

Definition at line 133 of file parameters_2d.f90.

integer parameters_2d::n_eqns

Number of equations.

Definition at line 125 of file parameters_2d.f90.

integer parameters_2d::n_nh

Number of non-hyperbolic terms.

Definition at line 129 of file parameters_2d.f90.

integer parameters_2d::n_rk

Runge-Kutta order.

Definition at line 131 of file parameters_2d.f90.

integer parameters_2d::n_solid

Number of solid classes.

Definition at line 127 of file parameters_2d.f90.

integer parameters_2d::n_vars

Number of conservative variables.

Definition at line 124 of file parameters_2d.f90.

real*8 parameters_2d::r_collapse

Definition at line 90 of file parameters_2d.f90.

real*8 parameters_2d::r_source

Definition at line 77 of file parameters_2d.f90.

logical parameters_2d::radial_source_flag

Definition at line 73 of file parameters_2d.f90.

real*8 parameters_2d::reconstr_coeff

Slope coefficient in the linear reconstruction.

Definition at line 22 of file parameters_2d.f90.

real*8 parameters_2d::released_volume

Initial volume of the flow.

Definition at line 98 of file parameters_2d.f90.

logical parameters_2d::rheology_flag

Flag to choose if we add the rheology.

• T => rheology activated
• F => no rheology

Definition at line 59 of file parameters_2d.f90.

integer parameters_2d::rheology_model

choice of the rheology model

• 1 => Voellmy-Salm rheology
• 2 => plastic rheology

Definition at line 65 of file parameters_2d.f90.

logical parameters_2d::riemann_flag

Flag to choose the sort of problem to solve.

• T => riemann problem
• F => generic initial conditions (uploaded through functions, to be defined in inpout_2d.f90)

Definition at line 53 of file parameters_2d.f90.

real*8, dimension(:), allocatable parameters_2d::sed_vol_perc

Definition at line 122 of file parameters_2d.f90.

character(len=20) parameters_2d::solver_scheme

Finite volume method:
.

• 'LxF' => lax-friedrichs scheme;
• 'GFORCE ' => gforce scheme;
• 'KT' => Kurganov and Tadmor semidiscrete scheme;

Definition at line 151 of file parameters_2d.f90.

real*8 parameters_2d::t_collapse

Definition at line 91 of file parameters_2d.f90.

real*8 parameters_2d::t_end

end time for the run

Definition at line 155 of file parameters_2d.f90.

real*8 parameters_2d::t_init

Initial temperature of the pile of material.

Definition at line 117 of file parameters_2d.f90.

real*8 parameters_2d::t_output

time of the next output

Definition at line 156 of file parameters_2d.f90.

real*8 parameters_2d::t_runout

time of the next runout output

Definition at line 158 of file parameters_2d.f90.

real*8 parameters_2d::t_source

Definition at line 79 of file parameters_2d.f90.

real*8 parameters_2d::t_start

initial time for the run

Definition at line 154 of file parameters_2d.f90.

real*8 parameters_2d::t_steady

end time when reached steady solution

Definition at line 159 of file parameters_2d.f90.

real*8 parameters_2d::theta

Van Leer limiter parameter.

Definition at line 153 of file parameters_2d.f90.

real*8, dimension(4) parameters_2d::time_param

Definition at line 83 of file parameters_2d.f90.

real*8, parameter parameters_2d::tol_abs = 1.D-5

Definition at line 135 of file parameters_2d.f90.

real*8, parameter parameters_2d::tol_rel = 1.D-5

Definition at line 136 of file parameters_2d.f90.

logical parameters_2d::topo_change_flag

Definition at line 71 of file parameters_2d.f90.

logical parameters_2d::topography_demfile

Flag for uploading topography from a different file (topography_dem.asc)

• T => from dem
• F => from points in file.inp

Definition at line 40 of file parameters_2d.f90.

logical parameters_2d::topography_function_flag

Flag to choose in which way we upload the topography.

• T => through a function
• F => through points

Definition at line 34 of file parameters_2d.f90.

real*8 parameters_2d::vel_source

Definition at line 78 of file parameters_2d.f90.

real*8 parameters_2d::velocity_ang_release

Initial velocity direction (angle in degree):
.

• >=0 => departing from positive x-axis
• <0 => departign from maximum slope direction

Definition at line 114 of file parameters_2d.f90.

real*8 parameters_2d::velocity_mod_release

Initial velocity module of the pile.

Definition at line 107 of file parameters_2d.f90.

integer parameters_2d::verbose_level

Definition at line 161 of file parameters_2d.f90.

real*8 parameters_2d::x_collapse

Definition at line 88 of file parameters_2d.f90.

real*8 parameters_2d::x_release

Initial x-coordiante of the pile.

Definition at line 101 of file parameters_2d.f90.

real*8 parameters_2d::x_source

Definition at line 75 of file parameters_2d.f90.

real*8 parameters_2d::y_collapse

Definition at line 89 of file parameters_2d.f90.

real*8 parameters_2d::y_release

Initial y-coordinate of the pile.

Definition at line 104 of file parameters_2d.f90.

real*8 parameters_2d::y_source

Definition at line 76 of file parameters_2d.f90.