Mysterious 1.4 coefficient in UBLDef - Githubissues

ladybug-tools / uwg

:city_sunrise: The Urban Weather Generator (uwg) is a Python application for modeling the urban heat island effect.

https://www.ladybug.tools/uwg/docs/

GNU General Public License v3.0

56 stars 26 forks source link

Mysterious 1.4 coefficient in UBLDef #284

Open damiendavidINSA opened 7 months ago

damiendavidINSA commented 7 months ago

Hello,

The computation of the advection heat flux in the UBL involves a coefficient "1.4" that I can not explain.

The 1.4 coefficient occurs in the file uwg/UBLDef.py, lines 101, 105, 130, 136: https://github.com/ladybug-tools/uwg/blob/ee85e1d33c980ed2c1672aa83f19a28ce61d3db3/uwg/UBLDef.py#L101 https://github.com/ladybug-tools/uwg/blob/ee85e1d33c980ed2c1672aa83f19a28ce61d3db3/uwg/UBLDef.py#L105 https://github.com/ladybug-tools/uwg/blob/ee85e1d33c980ed2c1672aa83f19a28ce61d3db3/uwg/UBLDef.py#L130 https://github.com/ladybug-tools/uwg/blob/ee85e1d33c980ed2c1672aa83f19a28ce61d3db3/uwg/UBLDef.py#L136

Has anyone any idea about the physical significance of the 1.4 coefficient?

Regards