parameter setting about rfluxmtx for dynamic simulation

asked 2019-06-20 07:37:49 -0500

Jing Gao gravatar image

When the dynamic daylighting simulation was carried out by using 3-phase, it was found that the illuminance near the window was greatly different from the experimental value. What are the parameters that must be selected to set for V matrix and D matrix, such as -ab -ad? For illuminance or for images? What should the value of parameters be set to?

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You have experimental data? How did you verify that the sky luminance distribution in your physical experiment matched your S matrix? That's the first thing I would check. Then, was there direct sunlight? You might need to use the 5-phase method for better accuracy.

Nathaniel Jones gravatar image Nathaniel Jones  ( 2019-06-20 13:09:45 -0500 )edit

Thank you for your answer. But why in the 3-phase simulation, the error between the illuminance value and the measured value at the near window is very large, but the error between the illuminance value and the measured value at the far window is small? How to reduce the error in 3-phase? Which parameters must be set in the dynamic simulation?What is the difference between the 3-phase method and the 5-phase method?

Jing Gao gravatar image Jing Gao  ( 2019-06-29 03:09:47 -0500 )edit

It sounds like you aren't yet familiar with multi-phase methods. I recommend starting here with Sarith Subramaniam's tutorial.

Nathaniel Jones gravatar image Nathaniel Jones  ( 2019-07-01 12:29:18 -0500 )edit