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 Post subject: Calculating a cylinder port area with different corner radiiPosted: Mon, 9 Jan 2012 20:57:54 UTC
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Joined: Mon, 9 Jan 2012 20:38:40 UTC
Posts: 4
If i have a cylinder that has a rectangle port in the side of the cylinder, i need to find the area of that port.

the cylinder has an inside diameter of 66mm
port width - 30mm
port height - 13mm
top left corner radius - 0.2mm
top right corner radius - 0.4mm
bottom left corner radius - 0.3mm
bottom right corner radius - 0.5mm
I figured out, how to work out the area with using one corner radius, but i need to figure out how to calculate the port area using four different corner radii. I also included the chordal width, as the layout was unfolded out on paper.
Code:
Chordal width =SIN(RADIANS(port width*180)/(3.1415927*cylinder bore dia))*cylinder bore dia
Port Area (using 1 radii & chordal width)

I am thinking i should average the radii, first perhaps

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