Under construction.
!= Sample program for gtool_historyauto/gtool5
!
! * 2009/10/18 Y.Morikawa
! * 2003/08/21 M.Odaka
! * 2001/02/27 S.Takehiro
!
! Solving diffusion equation
! \[
! du/dt = \kappa d^2 u/dx^2
! \]
! for giving values of $u$ at $x=[0,1]$.
!
program diffusion_cal2
use gtool_historyauto ! Access module (モジュール指定)
use dc_calendar ! Access module (モジュール指定)
use dc_types ! Access module (モジュール指定)
integer, parameter :: nx=30 ! Grid number (グリッド数)
real(DP), parameter :: dx=1.0/(nx-1) ! Grid interval (グリッド間隔)
type(DC_CAL) :: cal_gre ! Gregorian Calendar (グレゴリオ暦)
type(DC_CAL) :: cal_mars ! Martian Calendar (火星っぽい暦)
type(DC_CAL_DATE) :: start_date ! Start Date (モデル開始日時)
type(DC_CAL_DATE) :: end_date ! End Date (モデル終了日時)
real(DP) :: dt ! Time step [sec] (時間間隔 [秒])
real(DP) :: curtime ! Current time [sec] (経過時刻 [秒])
real(DP) :: endtime ! End time [sec] (終了時刻 [秒])
real(DP) :: dsptime ! Output interval [day] (出力間隔 [日])
real(DP) :: sec_of_year ! Second of year (年始めからの通秒)
real(DP) :: day_of_year ! Day of year (年始めからの通日)
real(DP) :: sec_of_day ! Second of day (日始めからの通秒)
logical :: flag_leapyear ! Leap year (閏年)
real(DP), dimension(nx):: x=(/(dx*(i-1),i=1,nx)/) ! X coordinate (座標変数)
real(DP), dimension(nx):: temp ! Temperature (温度)
real(DP), parameter :: kappa=1.0e-9 ! Diffusion coefficient (熱拡散係数)
character(256):: date_str1, date_str2
character(32):: cal_type
integer:: month_in_year, day_in_month(1:12), hour_in_day, min_in_hour
integer, pointer:: day_in_month_ptr(:) =>null()
real(DP):: sec_in_min
call DCCalCreate( cal_type = 'Gregorian', cal = cal_gre )
call DCCalCreate( month_in_year = 1 , &
& day_in_month = (/669/), &
& hour_in_day = 24, &
& min_in_hour = 1 , &
& sec_in_min = 3694.0_DP, &
& cal = cal_mars )
! Set calendar
! (暦設定)
call DCCalDateCreate( year = 2000, month = 1, day = 1, &
& hour = 0, min = 0, sec = 0.0_DP, &
& date = start_date )
call DCCalDateCreate( year = 2001, month = 1, day = 1, &
& hour = 0, min = 0, sec = 0.0_DP, &
& date = end_date )
! Set date
! (日時設定)
curtime = DCCalConvertByUnit( 0.0_DP, 'sec', 'sec', cal = cal_mars )
! Set initial time
! (初期時刻設定)
endtime = DCCalDateDifference( start_date, end_date, cal = cal_mars )
! Set end time
! (終了時刻設定)
dt = DCCalConvertByUnit( 1.0_DP, 'day', 'sec', cal = cal_mars )
! Set time step
! (時間ステップ設定)
dsptime = 10
! Set output interval
! (出力間隔設定)
temp = exp(-((x-0.5)/0.1)**2) ! Set initial value
! (初期値設定)
call HistoryAutoCreate( & ! Create output file
& title='Diffusion equation', & ! (ヒストリー作成)
& source='Sample program of gtool_historyauto/gtool5', &
& institution='GFD_Dennou Club davis project', &
& dims=(/'x','t'/), dimsizes=(/nx,0/), &
& longnames=(/'X-coordinate','time '/), &
& units=(/'m ','day'/), &
& origin=curtime, terminus=endtime, interval=dsptime, &
& cal=cal_mars, start_date=start_date )
call HistoryAutoPutAxis('x',x) ! Output 'x' (次元変数出力)
call HistoryAutoAddVariable( & ! Set output variable
& varname='temp', dims=(/'x','t'/), & ! (変数定義)
& longname='temperature', units='K', xtype='double', &
& file='diffusion_cal2.nc' )
call HistoryAutoPut(curtime,'temp',temp) ! Output 'temp' (変数出力)
write(6,*) "Calendars: "
call DCCalInquire( cal_type, &
& month_in_year = month_in_year, &
& day_in_month_ptr = day_in_month_ptr, &
& hour_in_day = hour_in_day, &
& min_in_hour = min_in_hour, &
& sec_in_min = sec_in_min, &
& cal = cal_mars )
! Inquire calendar
! (暦に関して問い合わせ)
write(6,*) " Martian Cal: month in year: ", month_in_year
write(6,*) " days in months: ", day_in_month_ptr
write(6,*) " hour in day: ", hour_in_day
write(6,*) " min in hour: ", min_in_hour
write(6,*) " sec in min: ", sec_in_min
deallocate(day_in_month_ptr)
call DCCalInquire( cal_type, &
& month_in_year = month_in_year, &
& day_in_month = day_in_month, &
& hour_in_day = hour_in_day, &
& min_in_hour = min_in_hour, &
& sec_in_min = sec_in_min, &
& cal = cal_gre )
! Inquire calendar
! (暦に関して問い合わせ)
write(6,*) " Gregorian Cal: month in year: ", month_in_year
write(6,*) " days in months: ", day_in_month
write(6,*) " hour in day: ", hour_in_day
write(6,*) " min in hour: ", min_in_hour
write(6,*) " sec in min: ", sec_in_min
write(6,*) ""
call DCCalDateInquire( date_str1, date = start_date )
! Inquire date and set a character variable
! (日時を問い合わせて文字型変数へ代入)
write(6,*) "Start: ", trim(date_str1)
! Display start date
! (開始日時の表示)
sec_of_year = DCCalDateEvalSecOfYear( curtime, start_date, cal_mars )
! Second of year (年始めからの通秒)
day_of_year = DCCalDateEvalDayOfYear( curtime, start_date, cal_mars )
! Day of year (年始めからの通日)
sec_of_day = DCCalDateEvalSecOfDay( curtime, start_date, cal_mars )
! Second of day (日始めからの通秒)
flag_leapyear = DCCalDateChkLeapYear( curtime, start_date, cal_mars )
! Leap year (閏年)
write(6,*) " Martian Cal: second of year: ", sec_of_year
write(6,*) " day of year: ", day_of_year
write(6,*) " second of day: ", sec_of_day
write(6,*) " leap year: ", flag_leapyear
sec_of_year = DCCalDateEvalSecOfYear( curtime, start_date, cal_gre )
! Second of year (年始めからの通秒)
day_of_year = DCCalDateEvalDayOfYear( curtime, start_date, cal_gre )
! Day of year (年始めからの通日)
sec_of_day = DCCalDateEvalSecOfDay( curtime, start_date, cal_gre )
! Second of day (日始めからの通秒)
flag_leapyear = DCCalDateChkLeapYear( curtime, start_date, cal_gre )
! Leap year (閏年)
write(6,*) " Gregorian Cal: second of year: ", sec_of_year
write(6,*) " day of year: ", day_of_year
write(6,*) " second of day: ", sec_of_day
write(6,*) " leap year: ", flag_leapyear
do while ( curtime < endtime ) ! Check termination (終了判定)
temp(2:nx-1) = temp(2:nx-1) & ! Time integration (時間積分)
& + kappa*(temp(3:nx)-2*temp(2:nx-1)+temp(1:nx-2))/dx**2*dt
call HistoryAutoPut(curtime,'temp',temp) ! Output 'temp' (変数出力)
curtime = curtime + dt ! Progress model time (モデル時刻進行)
enddo
call DCCalDateInquire( date_str1, curtime, start_date, cal = cal_mars )
call DCCalDateInquire( date_str2, curtime, start_date, cal = cal_gre )
! Inquire date and set a character variable
! (日時を問い合わせて文字型変数へ代入)
write(6,*) "End: ", trim(date_str1), " (Mars), ", trim(date_str2), " (Gregorian)"
! Display end date (終了日時出力)
sec_of_year = DCCalDateEvalSecOfYear( curtime, start_date, cal_mars )
! Second of year (年始めからの通秒)
day_of_year = DCCalDateEvalDayOfYear( curtime, start_date, cal_mars )
! Day of year (年始めからの通日)
sec_of_day = DCCalDateEvalSecOfDay( curtime, start_date, cal_mars )
! Second of day (日始めからの通秒)
flag_leapyear = DCCalDateChkLeapYear( curtime, start_date, cal_mars )
! Leap year (閏年)
write(6,*) " Martian Cal: second of year: ", sec_of_year
write(6,*) " day of year: ", day_of_year
write(6,*) " second of day: ", sec_of_day
write(6,*) " leap year: ", flag_leapyear
sec_of_year = DCCalDateEvalSecOfYear( curtime, start_date, cal_gre )
! Second of year (年始めからの通秒)
day_of_year = DCCalDateEvalDayOfYear( curtime, start_date, cal_gre )
! Day of year (年始めからの通日)
sec_of_day = DCCalDateEvalSecOfDay( curtime, start_date, cal_gre )
! Second of day (日始めからの通秒)
flag_leapyear = DCCalDateChkLeapYear( curtime, start_date, cal_gre )
! Leap year (閏年)
write(6,*) " Gregorian Cal: second of year: ", sec_of_year
write(6,*) " day of year: ", day_of_year
write(6,*) " second of day: ", sec_of_day
write(6,*) " leap year: ", flag_leapyear
call HistoryAutoClose
stop
end program diffusion_cal2
