Hello
When specifying computational parameters, I have to enter a start date and a time period. I can see that a climate file stretches over a year.
If i need for example a period of a week how does wufi know what week to climate data from?
I guess wufi figure this out by the date i have entered for example 1. october. But does this mean that the year (for example 1991) is insignificant as wufi only needs to know what time of the year?
best regards
Climate file and calculation period
Re: Climate file and calculation period
WUFI tries to find the specified date inside the climate data file.
If it can not find this date the year is ignored and the specified hour, day and month of the first year is used.
WUFI uses it's own calendar which is 8760 hours long.
As far as I know all climate data files which come with WUFI are of length 8760 hours.
But you can define your own climate data (use the Excel-Sheet which ships with WUFI) spanning several years.
If you need a period of a week from the second week in March you select the apropriate date (3/14/yyyy) and WUFI will start at line
24*(31+28+14)=511 of the climate data file (assuming the file starts at 1/1/yyyy and contains hourly data).
And to specify a single week you have to use 24*7=168 "number of timesteps" with a "timestep" of 3600 seconds.
In case you find it appropriate to reduce the timestep to 1800 seconds you have to increase the number of timesteps to 336 of course
Regards,
Veit Eitner
If it can not find this date the year is ignored and the specified hour, day and month of the first year is used.
WUFI uses it's own calendar which is 8760 hours long.
As far as I know all climate data files which come with WUFI are of length 8760 hours.
But you can define your own climate data (use the Excel-Sheet which ships with WUFI) spanning several years.
If you need a period of a week from the second week in March you select the apropriate date (3/14/yyyy) and WUFI will start at line
24*(31+28+14)=511 of the climate data file (assuming the file starts at 1/1/yyyy and contains hourly data).
And to specify a single week you have to use 24*7=168 "number of timesteps" with a "timestep" of 3600 seconds.
In case you find it appropriate to reduce the timestep to 1800 seconds you have to increase the number of timesteps to 336 of course
Regards,
Veit Eitner