Parametric Design: Project 2

ARCH 653_Project 2

Farshad Kheiri

This project has two steps:

1. Creating a Dynamo model that is connected to the Revit file (project level).

2. Making this model changeable with changes of the sun position.

In step one, first the model is connected to the Revit file

Input

Then we have some nodes to make the parameters changeable. This step is because of the YES/NO parameters that we already implemented in Revit file. These parameters would make the parameters changeable. Therefore, we needed Boolean nodes to assign YES value to them.

After this step, we can access and change the parameters of the façade. (The parameters graphical illustration and the nodes that are for changing each one of them is revealed in images below):

Parameters

Making the parameters changeable

Window Height

Window Width

Module Depth

X (horizontal placement of the window)

Z (vertical placement of the window)

The next step is to change the area of the windows based on the position of the sun. The area of the windows would increase by the increase of the sun altitude. For this reason, sun altitude and azimuth is gotten from the Revit file and a few scripts are added for the cases that sun is not above the horizon.

Getting Sun position, calculating shadows, and changing window areas

The window area in first floor is more sensitive to the position of the sun. Therefore, first the horizontal shadow is calculated:

Then the vertical shadow is calculated:

Then, the area which is counted twice would be subtracted:

Finally, a value (equal or more than one) would be calculated based on the shadow area on the window.

The point is that the area multiplier for the floors other than the first floor is a number between Zero to One; but in the first floor, the values would be 1 or greater than one. Consequently, Changes in the areas of the windows in the first floor would be more sensitive to the changes of the sun position than in other floors.

Here is some examples of the changes of the window area by changing the Sun position in the same day: