1 Reply Latest reply on Jul 23, 2012 3:10 PM by Vikram Vedantham

    Solar Radiation with vector direction?

    Charles H

      Hi everyone, I have a question regarding time-dependent solar radiation.


      I am using SolidWorks flow simulation and am going to be simulating the effects in a vacuum (pressure ~ 3e-7 Pa).  Does anyone know how I can change the solar intensity as a and direction function of time?  I am only given azimuth and elevation angles, but I'm assuming that the sun disappears once it goes over the horizon, which I do not want.  I just want a hard vector for the sun, and one that can change with time.

        • Re: Solar Radiation with vector direction?
          Vikram Vedantham

          I worked on a time dependent solar radiation problem a year ago. You will have to define the intensity and direction as a function of time right under General Settings (where you enable solar radiation).


          You will also have to resolve the azimuth and elevation angles into its component vectors to determine the resultant position of the sun in terms of X, Y and Z co-ordinates. The easiest way to accomplish this is using Excel, and basic trigonometry (with your sine and cosine components). The net output should be X, Y, Z and intensity each as a function of time.


          You can then input these four tables inside General Settings > Solar Radiation after time dependency has been defined.