Tree model used in PWC

[jjansman]

Thanks for your answer. I try to use papers/aticles to backup the chosen values, so that is why I come back:

@RicardoParis

• Cd is assumed, by default, to be fixed at 0.2 for all cases but you can change it with a custom definition

Were is this value 0.2 coming from? It looks to be close to the drag coefficient measured for a leafless decidious tree; but is that the origin of the 0.2?

@RicardoParis

• Figure 10 in the documentation that you posted shows how to obtain the height
• I normally model a solid trunk (as a solid wall) and a separate volume for the leaves (as a porous media)

In your case: I assume you use as H, the height of the ‘seperate volume for the leaves’. Correct?

Sorry for this elaboration. But I get the feel, my picture becomes more and more consistent. Thanks.

All the best,