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Urban Daylight Simulation
  • Team: Timur Dogan, Christoph Reinhart, Panagiotis Michalatos
  • Date: 2012
  • Link: Read the full paper

This paper describes the development of a new tool that allows designers to simulate and evaluate the daylight potential of urban master plan proposals. The tool is a plug-in for the Rhinoceros3D CAD modeler and follows a two-step workflow. During the initial step, hourly solar radiation levels on all facades within an urban scene are simulated based on Radiance/Daysim. During the second step, exterior radiation levels are converted into hourly interior illuminance distributions using a generalized impulse response.

Climate based daylighting metrics, such as daylight autonomy, are also computed. The results yielded by the new method are carefully compared to regular and substantially more time-consuming Daysim simulations. This comparison shows that the overall daylit area in the investigated master plan matches Daysim predictions within 10%. Given its implementation into the Rhinoceros3D environment, as well as the almost instant simulation feedback, the tool may serve as a generative method for designers.

Urban Daylight Simulation

Calculating the daylit area of urban designs
About ESLAB

We investigate the intersections of architectural design, sustainability, building performance simulation and computational design. We stand for excellence in teaching and research in the area of building technology, daylight and energy modeling, passive climate control strategies and performance driven design workflows in both urban and architectural scales.

Contact

Led by: Prof. Dr. Timur Dogan
Website: Cornell AAP Profile
Email: tkdogan[at]cornell.edu

Address

Cornell University, AAP
240B Sibley Hall
Ithaca, NY 14853,USA