Mark172
Aerospace
- Aug 26, 2008
- 43
It has been a while since taking any fluids classes (10 years since undergrad), so I'm having some trouble modeling a simple greenhouse for a home project. If anyone here has experience with Solidworks Flow and some fluids knowledge, I bow to your expertise and humbly ask for your assistance!!
I'm trying to see what happens to airflow within my greenhouse. It doesn't actually get much sunlight so I believe most of the air exchange is driven by humidity. I've modeled it in Solidworks as such:
Here are my inputs. General settings: gravity applied. Fluid subdomain (the enclosed volume of the greenhouse): Air, 101325 Pa, 294.2K (1 deg warmer than default), and 100% humidity. All other settings default.
Boundary Conditions applied at the holes: Static pressure, 101325 Pa, 293.2K, and 0% humidity.
So in essence the holes are at 0% humidity and the internal air is at 100% and 1 degree warmer. That's it! But I'm getting some weird results (inflow through the hole on top of 2 m/s!!?). Furthermore, the results vary an unruly amount when I *slightly* tweak the temperature or pressure at either the inlets or the internal air.
Is there something I'm missing? I feel like I'm out of my element here (my expertise is structures and mechanical design).
I'm trying to see what happens to airflow within my greenhouse. It doesn't actually get much sunlight so I believe most of the air exchange is driven by humidity. I've modeled it in Solidworks as such:
Here are my inputs. General settings: gravity applied. Fluid subdomain (the enclosed volume of the greenhouse): Air, 101325 Pa, 294.2K (1 deg warmer than default), and 100% humidity. All other settings default.
Boundary Conditions applied at the holes: Static pressure, 101325 Pa, 293.2K, and 0% humidity.
So in essence the holes are at 0% humidity and the internal air is at 100% and 1 degree warmer. That's it! But I'm getting some weird results (inflow through the hole on top of 2 m/s!!?). Furthermore, the results vary an unruly amount when I *slightly* tweak the temperature or pressure at either the inlets or the internal air.
Is there something I'm missing? I feel like I'm out of my element here (my expertise is structures and mechanical design).
