Isolated Circular Tank - Aerodynamic Shape Factor AS1170.2

[rpand4]

Hi

I am working on a circular water tank that is 6m in diameter and the tank itself is 1m high. This tank is held 10m above ground on a frame. I am trying to work out the aerodynamic shape factor using AS1170.2 Cl C5.2.1. The formula for Cpb is only valid provided c/b is between 0.25 and 4.0 inclusive. in my case c/b=1/6=0.167. Which means I cannot use that formula to calculate cpb. So what do I do? The code is not very clear on this.

Any assistance is much appreciated.

Regards

 

[rowingengineer]

You probably need to look at the paper which the code references for this and see why they put in the limits and then use engineering judgement.

http://www.nceng.com.au/

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."

 

[Settingsun]

This rings a bell. In the thread linked below, someone suggested AS 1210. I don't have it myself to check whether it covers your case but worth a mention.

thread744-436460