Flowsquare

http://flowsquare.com/upenn/
Design Project — CFD

Some explanation on the input files.
• Lesson 2.1 — bc.bmp
• Lesson 2.3 — grid.txt

1. Use SI units
   Length: m
   Time: s
   Velocity: m/s
   …

2. Prepare control file
   Typical control file (grid.txt) for UPenn’s design project
   Red marks: Basic
   Blue marks: Advanced
   

3. Make your simulation case as small as possible
   One pixel of bc.bmp = spatial resolution
   Example. nx=750 and lx=200 → spatial resolution = 200/(750-1) = 0.27 (m)

Cases

1. Group 1 (Control file: grid.txt, Sample result: Nick.html)
   

   Original input figure.

   

   Modified input figure.

   Changes:

   1. Pixel size: 3287×928 → 750×375
   2. Colour: Wall B.C. → Black (RGB: 0, 0, 0)
   3. Inflow Boundary: Blue line (RGB: 0, 0, 255) on left side.
   4. Wall B.C. should be thicker than 3 pixels.
   5. Additional space between uppper outflow B.C. and top of the object.

   ---

2. Group 2 (Control file: grid.txt, Sample result: Brian.html)
   

   Original figure.

   

   Modified figure.

   Changes:

   1. Pixel size: 2552×1500 → 640×320
   2. Inflow Boundary: Blue line (RGB: 0, 0, 255) on the right side.
   3. Wall B.C. should be thicker than 3 pixels.
   4. Size of the slits (and number accordingly).
   5. Additional outflow section on the left of the building.
   6. Assumed the domain size to be 100 (m) x50 (m).
   7. Assumed the inflow velocity to be 5 (m/s) from left to right.