Venturi formula

[Tony]

Just goes to show the importance of keeping it as simple as possible.

Would it be worth adding a venturi calculator too? (I know I've not finished the cone one yet, it will happen!)

I didn't add one before because I figured the formula alone was enough but by the sound of it, it would be useful to have one.  And we could potentially add eductor jet size to that as well.

[Julian]

I'd go for it.  The object of the site is to provide info and assist people.  I'm happy to do new diagrams if required, just let me know.

[Tony]

I've added the venturi calculator here:

http://www.biopowered.co.uk/forum/tools/throat.php

(Also in menu above).

[Tony]

OK think I've got it now:

http://www.biopowered.co.uk/forum/tools/cone.php

Will verify the maths later (javascript is in radians so it's possible I've made a conversion mistake somewhere).

[Julian]

Looks good.  I can do a couple of graphics to explain the terminology, one for the input and one for the output.  Can they be inserted in the boxes on the righthand side?

What about the hole in the top for the fitting?  Similar calculation to the main OD I assume.

[Tony]

Graphics could be inserted either to the left or right of the params/results section. I was thinking that for the time being we could just insert James' hand drawn diagram.

[Julian]

Probably better if I modify the two top diagrams here ... http://www.biopowered.co.uk/wiki/Cone_bottoms_for_tanks

Just need to know what you are going to call the fitting cutout diameter.

[Tony]

fitting cutout diameter

That works. Lets use it!

[Julian]

Just modifying them now.

Would it be more useful to give the cone height rather than the flat cone diameter? 

[Julian]

First diagram here ... http://www.biopowered.co.uk/wiki/File:Cone_diagram_1.png

Let me know if it's a suitable size.  I know it can be re-sized, but that will effect the text.

[Julian]

Second one's uploaded ... http://www.biopowered.co.uk/wiki/File:Cone_diagram_2.png

Very much like the idea of offering the chord dimension, saves people measuring angles.

I've gone with radiuses instead if diameters as that's what people will be using to construct the cone.

[Tony]

Nice one Julian, I've added both those, obviously some tweaking will be needed.
Regarding angle vs height, you anticipate that these should both be input parameters (the user choses which one they want to use and the other is updated automatically?)

Edit: done those changes

Maybe needs the fitting diameter added to the top diagram for clarity?

[Julian]

Good work with the calculator, think the height bit is a big bonus.  But I think the layout with the graphics could do with improving and the text has come out different sizes.  Strange, because it the same text, exported at the same size.

How about I redo the second graphic to be two pairs, one above the other.  That way you can shunt the graphics off to the right which will, I think, stop the page looking so cramped.

Also for consistency and clarity, I'll letter the remaining dimensions and angles. I'll not use Greek for he angles, just lower case (makes it easy if not quite correct)

[Julian]

Are they any better?

[Julian]

Just noticed you've added volume too ... brilliant!