motion_equation Module Reference

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

Functions/Subroutines
subroutine, public	motion_equation_Init (icgrid)
	Initialize the motion_equation module.
subroutine, public	calc_motion_eq_dvdt (DVelDtN, xy_VelN, xy_HeightN, xy_Coli, diff_eval)
	Evaluates the right-hand side of the semi-discrete equation of motion, and calculates the rate of change of velocity at time level n for all grid points.
real(DP), dimension(3)	local_k (s_pos)
	Represents the vertical unit vector in geographic coordinate system in terms of cartesian unit vectors.
Variables
type(Field_IcGrid2D), save	xy_Zeta
	The variable of derived type Field_IcGrid2D to manage the field data of relative vorticity.
type(Field_IcGrid2D), save	mecha_energy
	The variable of derived type Field_IcGrid2D to manage the field data of mechanical energy.
type(Field_IcGrid2D), save	grad_mecha_energy
	The variable of derived type Field_IcGrid2D to manage the gradient field data of the sum of geopotential and kinetic energy.

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Detailed Description

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

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

Author:

Yuta Kawai

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Function/Subroutine Documentation

subroutine,public motion_equation::calc_motion_eq_dvdt	(	type(Field_IcGrid2D),intent(inout)	DVelDtN,
		type(Field_IcGrid2D),intent(in)	xy_VelN,
		type(Field_IcGrid2D),intent(in)	xy_HeightN,
		type(Field_IcGrid2D),intent(in)	xy_Coli,
		type(Derivate_Field_IcGrid2D),intent(inout)	diff_eval
	)

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

Specifically, this subroutine evaluates the right-hand side of the following semi-discrete equation as described in Eq (6) in Tomita et al(2001).

where the subscript denotes the physical field at time level n.

Parameters:

[in,out]	DVelDtN	The variable of derived type Field_IcGrid2D which manages the rate of change of velocity field 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_Coli
[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.

Definition at line 186 of file motion_equation.f90.

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real(DP),dimension(3) motion_equation::local_k

(

real(DP),dimension(3),intent(in)

s_pos

)

[private]

Represents the vertical unit vector in geographic coordinate system in terms of cartesian unit vectors.

Parameters:

[in]

s_pos

地理座標系における位置ベクトル .

Returns:

引数で与えられた経度・緯度における鉛直方向の単位ベクトル(成分は直交座標系表示).

Definition at line 305 of file motion_equation.f90.

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subroutine,public motion_equation::motion_equation_Init

(

type(IcGrid2D_FVM),intent(inout)

icgrid

)

Initialize the motion_equation module.

Parameters:

[in,out]

icgrid

The variable of derived type IcGrid2D_FVM.

Definition at line 122 of file motion_equation.f90.

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Variable Documentation

type(Field_IcGrid2D),save motion_equation::grad_mecha_energy

The variable of derived type Field_IcGrid2D to manage the gradient field data of the sum of geopotential and kinetic energy.

Definition at line 107 of file motion_equation.f90.

type(Field_IcGrid2D),save motion_equation::mecha_energy

The variable of derived type Field_IcGrid2D to manage the field data of mechanical energy.

Definition at line 103 of file motion_equation.f90.

type(Field_IcGrid2D),save motion_equation::xy_Zeta

The variable of derived type Field_IcGrid2D to manage the field data of relative vorticity.

Definition at line 99 of file motion_equation.f90.