Concerns with input for DesignBuilder CFD
Hello,
I'm trying to run a rather simple CFD analysis on DesignBuilder to get a bit more comfortable before moving into an actual project. Im trying to look at the air temperature and MRT when using a convector in a space (right at the bottom of a window). As I'm learning CFD, I'm trying to recreate an older project I found with all the boundary condition. (Note: This project was run in Ansys) I have the wall temperatures set to 19.6°C and the window to 16.1°C. Internal temperature of 20°C To create a convector, I've made an assembly with a constant temperature of 47°C according to the convectors specifications (mass turned on- air doesn't move through the object). I'm running this with a K-e turbulence model and Power law discretisation scheme. Isothermal turned off. Grid size of 0.1m One occupant close to the convector.
However, when I look at the results, it isn't very similar to the previous project. The main difference being the surface temperature of the window (near the convector) has a temperature as high as 28°C and going lower. While in my construction, I have the temperature reaching barely 23°C.
I'm not entirely sure if this is the right way of creating a convector object. If anyone has any experience with DB CFD, I would really appreciate any help with what I might be doing wrong.
Best regards, Adarsh
