How to calculate the cylindrical illuminance in the room?

Hi. I have used Ladybug tools for 1.5 years.It is an amazing software for environmental analysis in Grasshopper and Rhino platform. As I know,Honeybee can calculate the horizontal and vertical lighting illuminance.

Recently I am involved in the office building project. The client asked our team to calculate the cylindrical illuminance. So I came here and started this discussion.

Is there any method or some component in Honeybee can be used for calculating the cylindrical illuminance ?

I uploaded the relevant file to the attachment. Please look at it!!!

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Permalink Reply by Sarith Subramaniam on June 6, 2017 at 3:51am

This way of doing lighting calculations is far too esoteric for it be of any use as a permanent script in Honeybee.

There is a paper in lighting research and technology which discusses a Radiance-based workflow for an improvement over this method. All the ingredients required for performing that simulation are already present in Honeybee. By the way, if you'd like to undestand more about this I'd suggest the writings of Chris Cuttle. He has been discussing this concept for more than a decade.

Permalink Reply by Wen (Wendy) Shi on June 19, 2017 at 7:54am

I think you should set some vertical vectors for the test point in the grid, in eight different directions like what they did in the paper attached. I am trying to learn how to calculate this too. Hope the paper will be of some help.

The file can not be uploaded, the title of the paper is : A novel circadian daylight metric for building design and evaluation

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