Search found 11 matches

by kac116
Wed Aug 05, 2020 2:43 pm
Forum: Beginner's Corner
Topic: Wind speed inside a street canyon
Replies: 4
Views: 44

Re: Wind speed inside a street canyon

Thank you very much for your reply. I simulated for 2 hours, starting at 2 am. I decided this because the wind tunnel experiment doesn't have the influence of weather or sunlight. I haven't tried at different times during the day because I have constant weather conditions like temperature and humidi...
by kac116
Wed Aug 05, 2020 9:46 am
Forum: Beginner's Corner
Topic: Wind speed inside a street canyon
Replies: 4
Views: 44

Re: Wind speed inside a street canyon

Hi Tim,
Thank you for your reply. I attached the figure of my model area.
I didn't use nesting grid, instead, I increased the border area. The grid dimensions are 192 x 254 x 54 with a resolution of 1m.

Thank you once more for your help in this matter.
Best
by kac116
Tue Aug 04, 2020 11:37 am
Forum: Beginner's Corner
Topic: Wind speed inside a street canyon
Replies: 4
Views: 44

Wind speed inside a street canyon

Hi ENVI-met team, I need to validate my ENVI-met results for my research. I'm using CODASC validation data (wind tunnel experiment data) because this validation data has been used in other research with ENVI-met. However, in my case, I don't get a good validation. I'm modelling an isolated street ca...
by kac116
Fri Jun 26, 2020 9:10 am
Forum: Beginner's Corner
Topic: Nesting grids problem in Leonardo
Replies: 2
Views: 65

Re: Nesting grids problem in Leonardo

Great, thank you, Tim
by kac116
Wed Jun 24, 2020 11:34 am
Forum: Beginner's Corner
Topic: Nesting grids problem in Leonardo
Replies: 2
Views: 65

Nesting grids problem in Leonardo

Hi all, I simulated an area of ​​24.5m x 33m, resolution 0.5mx0.5mx2m (0.4m in the lowest 5 cells). I used 40 nesting grids and added them to the simulation to see them in Leonardo. I opened my area in Leonardo, and the main area looks very small, of course, so I cut the nesting grid to analyze my m...
by kac116
Thu Apr 30, 2020 8:06 am
Forum: Beginner's Corner
Topic: Constant meteorological parameters
Replies: 1
Views: 29

Constant meteorological parameters

Hi everyone, I hope you're doing well. I need to validate my model against a wind tunnel experiment. To do this, I need to establish constant meteorological parameters. I already set the same Max and Min values for temperature and humidity, but still, I have variation in my model over the day. How c...
by kac116
Fri Apr 17, 2020 8:54 am
Forum: Beginner's Corner
Topic: Vortex inside a street canyon
Replies: 3
Views: 45

Re: Vortex inside a street canyon

Thank you for your reply. Yes, of course. I attached the screenshot of the area with vectors.
Thanks
by kac116
Thu Apr 16, 2020 9:06 am
Forum: Beginner's Corner
Topic: Vortex inside a street canyon
Replies: 3
Views: 45

Vortex inside a street canyon

Dear team, I hope everybody is fine. I'm modelling a simple street canyon to assess the impact on green infrastructures removing particulate matter. The area is a simple street canyon with no vegetation. Building height is 10m with a fixed street width of 10m. Grid dimension 180 x 120 x 10 grid, res...
by kac116
Tue Mar 10, 2020 8:41 pm
Forum: Read the forum/ manual
Topic: roughness lenght at the lowest cells
Replies: 1
Views: 195

roughness lenght at the lowest cells

Hi all, I read a previous post about the roughness length (z0) at the lowest cells. I know that a high value of z0 is not recommendable, because z0 is automatically reduced to half the size of the lowest grid cell. So, if my model has 50 × 50 × 30, the grid resolution is 1, 1, 2, and my roughness le...
by kac116
Mon Oct 07, 2019 12:00 pm
Forum: ENVI-met 4 (Main Simulation Model)
Topic: Set background concentration
Replies: 1
Views: 47

Set background concentration

Hi ENVI-met team
I'm trying to set the pollutant background concentration in the advance level, and every time it shows me 0 again: the number never changes. could you tell me the problem? I've the student licence
by kac116
Mon Aug 05, 2019 10:58 am
Forum: ENVI-met 4 (Main Simulation Model)
Topic: Deposition velocity
Replies: 1
Views: 93

Deposition velocity

Hi all, I'm a beginner ENVI-met user, and I'd like to know, could I change the deposition velocity according to vegetation? Or the model set up this value. For example, I know that according to in-situ measurements, deposition velocity for pine is 2.8 cm s−1, and 0.6 cm s−1 for poplar. So, I'd like ...