Parameters

FV2D Parameters Documentation

This document describes the configurable parameters for physical simulations using fv2d. These parameters have to be set in a .ini file to pass to fv2d at running time.

Warning

This page is experimental and might not reflect the current available settings on all branches.

Mesh Parameters

Section name: [mesh]

Parameter	Description	Default Value
Nx	Number of domain cells in x	32
Ny	Number of domain cells in y	32
Nghosts	Number of ghost cells	2
xmin	Lower boundary of the domain in x	0.0
xmax	Upper boundary of the domain in x	1.0
ymin	Lower boundary of the domain in y	0.0
ymax	Upper boundary of the domain in y	1.0

Numerical Parameters

Section name : [solvers]

Parameter	Description	Default Value
reconstruction	Type of reconstruction	PCM
riemann_solver	Riemann solver	HLLC
CFL	CFL number	0.8

Physical Parameters

Warning

Cette section n'est pas à jour et est à refaire

Parameter	Description	Default Value
gamma0	Adiabatic coefficient	5/3
gravity_mode	Gravity mode	none
gx	Gravity component in x	0.0
gy	Gravity component in y	0.0
m1	Polytropic parameter 1	1.0
m2	Polytropic parameter 2	1.0
theta1	Polytropic parameter theta 1	10.0
theta2	Polytropic parameter theta 2	10.0
well_balanced_flux_at_y_bc	Well-balanced flux at y boundaries	false

Divergence Cleaning

Section name : [solvers]

Parameter	Description	Default Value
div_cleaning	Divergence cleaning method	dedner
cr	GLMMHD parameter	0.18
GLM_scale	IdealGLM scale factor for cleaning speed	1.0

Thermal Conductivity

Parameter	Description	Default Value
thermal_conductivity_active	Enable thermal conductivity	false
thermal_conductivity_mode	Thermal conductivity mode	constant
kappa	Thermal conductivity coefficient	0.0
bctc_ymin	Lower boundary condition in y	none
bctc_ymax	Upper boundary condition in y	none
bctc_ymin_value	Value of the lower boundary condition in y	1.0
bctc_ymax_value	Value of the upper boundary condition in y	1.0

Viscosity

Parameter	Description	Default Value
viscosity_active	Enable viscosity	false
viscosity_mode	Viscosity mode	constant
mu	Viscosity coefficient	0.0

Heating

Parameter	Description	Default Value
heating_active	Enable heating	false
heating_mode	Heating mode	tri_layer
log_total_heating	Log total heating	false

Boundary Conditions

Parameter	Description	Default Value
boundary_x	Boundary condition type in x	reflecting
boundary_y	Boundary condition type in y	reflecting

Miscellaneous Parameters

Parameter	Description	Default Value
seed	Seed for random number generation	12345
log_frequency	Logging frequency	10
log_energy_contributions	Log energy contributions	false
log_energy_frequency	Energy logging frequency	10

Simulation Parameters

Parameter	Description	Default Value
tend	End time of the simulation	1.0
save_freq	Save frequency	0.1
filename_out	Output filename	run
restart_file	Restart file	""
multiple_outputs	Enable multiple outputs	false
time_stepping	Time integration scheme	euler
problem	Physical problem to solve	blast

Tri-Layer Parameters

Parameter	Description	Default Value
tri_y1	Tri-layer parameter y1	1.0
tri_y2	Tri-layer parameter y2	2.0
tri_pert	Tri-layer perturbation	1.0e-3
tri_k1	Tri-layer kappa1	0.07
tri_k2	Tri-layer kappa2	1.5
T0	Tri-layer T0	1.0
rho0	Tri-layer rho0	1.0

Isothermal Triple Layer Parameters

Parameter	Description	Default Value
iso3_dy0	Isothermal triple layer dy0	1.0
iso3_dy1	Isothermal triple layer dy1	2.0
iso3_dy2	Isothermal triple layer dy2	2.0
iso3_theta1	Isothermal triple layer theta1	2.0
iso3_theta2	Isothermal triple layer theta2	2.0
iso3_pert	Isothermal triple layer perturbation	1.0e-3
iso3_k1	Isothermal triple layer k1	0.07
iso3_k2	Isothermal triple layer k2	1.5
iso3_m1	Isothermal triple layer m1	1.0
iso3_m2	Isothermal triple layer m2	1.0
iso3_T0	Isothermal triple layer T0	1.0
iso3_rho0	Isothermal triple layer rho0	1.0
iso3_bx	Isothermal triple layer bx	0.0
iso3_by	Isothermal triple layer by	0.0