The UrbanDaylight v0.2 for Grasshopper allows designers to simulate and evaluate the daylight potential of large urban designs. The tool automates exterior DAYSIM simulations for all buildings in the city model. Given the solar radiation on the façades, it uses a generalized impulse response to compute the interior illumination on an hour by hour basis. This allows us to use the data for climate based metrics. To request a copy of the plugin please send an email to "me at urbandaylight.de" with your name and affiliation. The software is currently available only to academic, and other non-profit institutions for non-commercial, non-profit internal research purposes. If you are interested in obtaining a commercial license for this software, please state this in your email. You can download the paper here and the pdf slides form the SimBuild 2012 presetation here
URBAN DAYLIGHT: The Simulation from Timur on Vimeo.
This video shows the Urban Daylight software in action. It covers the component setup, exterior raytrace and impulse simulation.
URBAN DAYLIGHT: The Output from Timur on Vimeo.
This video shows the various outputs and metrics that are available. Spatial Daylight Autonomy (sDA,) Continuous Daylight Autonomy (cDA) as well as accumulated radiation on the envelope are covered.
URBAN DAYLIGHT: Cosine Facade Modeler from Timur on Vimeo.
This video shows how to model punctuated facades with a simple cosine function.
URBAN DAYLIGHT: Hula Hoop from Timur on Vimeo.
This video shows how to model orientation dependent facades with the Hula Hoop component of the Urban Daylight package. Based on the orientation vector of each facade patch the aperture can be modified withing the min/max boundaries.
URBAN DAYLIGHT: Resolve from Timur on Vimeo.
This video shows a window to wall ratio optimization process. Based on an initial result window to wall ratios are scaled locally based on the light flux between facade and interior sensor.