This module provides some subroutines which calculate the rate of change of surface height over time (i.e solve the continious equation). More...

Functions/Subroutines
subroutine, public	continious_equation_Init (icgrid)
	Initializes the continious_equation module.
subroutine, public	calc_continious_eq_dhdt (DHeightDtN, xy_VelN, xy_HeightN, xy_Htopo, diff_eval)
	Evaluates the right-hand side of the semi-discrete continious equation, and calculates the rate of change of surface height at time level n for all grid points.
Variables
type(Field_IcGrid2D), save	mass_flux
	The variable of derived type Field_IcGrid2D to manage the field data of mass flux.

Detailed Description

This module provides some subroutines which calculate the rate of change of surface height over time (i.e solve the continious equation).

Copyright (C) GFD Dennou Club, 2011-2012. All rights reserved.
license ??

Author:: Yuta Kawai

Function/Subroutine Documentation

subroutine,public continious_equation::calc_continious_eq_dhdt	(	type(Field_IcGrid2D),intent(inout)	DHeightDtN,
		type(Field_IcGrid2D),intent(in)	xy_VelN,
		type(Field_IcGrid2D),intent(in)	xy_HeightN,
		type(Field_IcGrid2D),intent(in)	xy_Htopo,
		type(Derivate_Field_IcGrid2D),intent(inout)	diff_eval
	)

Evaluates the right-hand side of the semi-discrete continious equation, and calculates the rate of change of surface height at time level n for all grid points.

Specifically, this subroutine evaluates the right-hand side of the following demi-discrete equation as described in Eq (2) in Tomita et al(2001).

$\left(\DP{h}{t}\right)_n = - \nabla \cdot ( h_n - h_s ) \Dvect{v}_n$

where $h_s$ is the height field of underlying mountain and the subscript $n$ denotes the physical field at time level n.

Parameters:

[in,out]	DHeightDtN	The variable of derived type Field_IcGrid2D which manages the rate of change of surface height with time at time level n.
[in]	xy_VelN	The variable of derived type Field_IcGrid2D which manages the velocity field at time level n.
[in]	xy_HeightN	The variable of derived type Field_IcGrid2D which manages the surface height field at time level n.
[in]	xy_Htopo	The variable of derived type Field_IcGrid2D which manages the height field of underlying mountain.
[in]	diff_eval	The variable of derived type IcGridHDiffOptr which manages some data for the differential operators acting on a physical field on icosahedral grid.