|
Post by stoffe64 on May 25, 2014 4:12:13 GMT -5
|
|
|
Post by stoffe64 on May 25, 2014 4:13:54 GMT -5
this is the bottom of the combustor towards the turbine inlet duct, imarked were it will be i also marked the corners so you guys understand better, cheers/stephan
|
|
|
Post by enginewhisperer on May 25, 2014 4:40:56 GMT -5
I'd just run it like that You could even make some small plates that protrude into the turbine housing and smooth off the corners - but that's probably overkill.
|
|
|
Post by stoffe64 on May 26, 2014 8:37:11 GMT -5
I'd just run it like that You could even make some small plates that protrude into the turbine housing and smooth off the corners - but that's probably overkill. hello, thanks for that tip, i was actually thinking something similar i guess its time to start cutting metal and find a TIG owner somewere..... cheers/stephan
|
|
|
Post by stoffe64 on Jun 2, 2014 12:03:49 GMT -5
|
|
|
Post by stoffe64 on Jun 2, 2014 12:07:12 GMT -5
This is the paper templates to show how the turbine inlet duct will look like ,you can easely see the swirl producing corners,now i start cutting stainless 4mm sheet
|
|
|
Post by madpatty on Jun 3, 2014 8:08:13 GMT -5
Though that transition piece will reduce certain amount of swirl and hence the loss in efficiency but still the corners and edges are worst for a flow of fluid...
The part of efficiency will be lost at those edges of the rectangular geometry...
This is the worst fact that our combustion chambers like circular geometry but the turbine inlets are mostly rectangular....
|
|
metiz
Senior Member
Joined: April 2011
Posts: 297
|
Post by metiz on Jun 3, 2014 8:50:14 GMT -5
I haven't realy been following this thread, but if the problem is making a round to square transition, you could simply make a cone for that If you can give me the dimensions (internal) I can make a layout for you.
|
|
|
Post by stoffe64 on Jun 3, 2014 16:31:04 GMT -5
Hello Metiz Thanks for your offer to help me out=)) It goes from the round 150mm flametube to the rectangular inlet with long sides at 90mm and the short sides at 60mm The height of that cone should be 100mm Thanks Metiz!
|
|
metiz
Senior Member
Joined: April 2011
Posts: 297
|
Post by metiz on Jun 3, 2014 18:08:15 GMT -5
Ok here it is. I asumed a 1mm sheet thickness. I saw in one of your previous posts that you were (going to) use 4mm sheet: it's all but impossible to roll a small cone with material that thick. I think 2mm is the limit. If you want a 1.5 or 2mm cone, let me know. I exported the layout to two pdf files, it won't fit on a single a4 sheet so you'll have to cut out both halves and stick 'em back together. Print the pages at 100%, no scaling or "fit to page" or any of that stuff. part 1part 2
|
|