Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
While I cannot directly speak to Diva4Rhino's ability to use BSDFs in a daylight simulation, I wanted to respond to @gmolina's statement. BSDFs absolutely CAN be used in a daylight coefficient implementation; in fact, that requirement was the whole reason for developing the Radiance 3-phase technique, which leverages daylight coefficients.
As of v1.7.0, OpenStudio uses daylight coefficients and BSDFs with the 3-Phase Method to simulate the effects of blinds. While the user cannot specify the BSDF (generic ones for venetian blinds are used), we will be supporting user-specified BSDFs and shade control algorithms in an upcoming major release. Also, Andy McNeil has posted two excellent tutorials on using BSDFs with the 3- and 5-phase methods. His tutorials show you how to use Radiance directly to do this.
| | 2 | No.2 Revision |
While I cannot directly speak to Diva4Rhino's ability to use BSDFs in a daylight simulation, I wanted to respond to @gmolina's statement. BSDFs absolutely CAN be used in a daylight coefficient implementation; in fact, that requirement was the whole reason for developing the Radiance 3-phase technique, which leverages daylight coefficients.
As of v1.7.0, OpenStudio uses daylight coefficients and BSDFs with the 3-Phase Method to simulate the effects of blinds. While the user cannot specify the BSDF (generic ones for venetian blinds are used), we will be supporting user-specified BSDFs and shade control algorithms in an upcoming major release. Also, Andy McNeil has posted two excellent tutorials on using BSDFs with the 3- and 5-phase methods. methods. His tutorials show you how to use Radiance directly to do this.
| | 3 | No.3 Revision |
While I cannot directly speak to Diva4Rhino's ability to use BSDFs in a daylight simulation, I wanted to respond to @gmolina's statement. BSDFs absolutely CAN be used in a daylight coefficient implementation; in fact, that requirement was the whole reason for developing the Radiance 3-phase technique, which leverages daylight coefficients. German is right in that BSDFs at the standard Klems basis (hemisphere subdivided into 145 patches) is insufficient to accurately capture really spiky distributions very well, and should not be used for glare analysis, at least.
As of v1.7.0, OpenStudio uses daylight coefficients and BSDFs with the 3-Phase Method to simulate the effects of blinds. While the user cannot specify the BSDF (generic ones for venetian blinds are used), we will be supporting user-specified BSDFs and shade control algorithms in an upcoming major release. Also, Andy McNeil has posted two excellent tutorials on using BSDFs with the 3- and 5-phase methods. His tutorials show you how to use Radiance directly to do this.
