Trees simulation in ANSYS Fluent

AFBrunetti · June 13, 2018, 08:45

Hi guys,
I'm trying to simulate a tree canopy inside my ANSYS Fluent simulation. Up to now, I always did it by defining a volume with given inertial resistance and porosity validating against CODASC data.
But now I have to simulate actual trees, for which I can measure LAD. Now, I know how to come out with porosity

porosity = 1-[t/2*(LAI/h)]

where t=leaf thickness

h= height of the canopy

as reported in an old thread. (even if there were any references at all

)

The problem is: how can I get any clue about inertial resistance?
Moreover, some of you guys know a better way to approach the problem?

maybe I am looking from the wrong point of view..

mz_uon · August 11, 2020, 17:49

Hi
Did you manage to solve this?
I used Darcy's law to arrive at the two coefficients, used to input in porous media window in Fluent domain condition.

Rgds

June 13, 2018, 08:45	Trees simulation in ANSYS Fluent	#1
AFBrunetti New Member Alessio Francesco Brunetti Join Date: Jun 2018 Posts: 1 Rep Power: 0	Hi guys, I'm trying to simulate a tree canopy inside my ANSYS Fluent simulation. Up to now, I always did it by defining a volume with given inertial resistance and porosity validating against CODASC data. But now I have to simulate actual trees, for which I can measure LAD. Now, I know how to come out with porosity porosity = 1-[t/2(LAI/h)] where t=leaf thickness h= height of the canopy as reported in an old thread. (even if there were any references at all) The problem is: how can I get any clue about inertial resistance? Moreover, some of you guys know a better way to approach the problem? maybe I am looking from the wrong point of view.. Last edited by AFBrunetti; June 14, 2018 at 05:29.*

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August 11, 2020, 17:49		#2
mz_uon Member Join Date: Apr 2020 Posts: 76 Rep Power: 6	Hi Did you manage to solve this? I used Darcy's law to arrive at the two coefficients, used to input in porous media window in Fluent domain condition. Rgds