Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors
  #46  
Old 07-08-2016, 05:28 PM
daiquiri's Avatar
daiquiri daiquiri is offline
Engineering and Design
 
Join Date: May 2004
Rep: 3380 Posts: 5,292
Location: Italy (Garda Lake) and Croatia (Istria)
Quote:
Originally Posted by sigurd View Post
If symmetric hulls are the lowest drag, but get asymmetricated by the boundary layer, then the real lowest drag shape should be symmetric minus the shape of the boundary layer, so that the BL fills in the shape and creates a virtual symmetric shape, is that right? That is probably not even possible. edit Also with the boundary layer being gradual, it wouldn't be as clear-cut as it sounds.
Don't know what are you aiming at, but IMO you are overthinking it anyways.

If Delta(L) is the displacement BL at the transom of a L-meters long and B-meters wide hull, then the order of magnitude of the ratio Delta(L)/B is typically 10^-3. In other words, the maximum thickness of the displacement BL is only 0.1% of the ship's beam. How much influence can that have on the final result of the optimization and on the residual drag? IMO, almost none.
Reply With Quote
  #47  
Old 07-08-2016, 10:22 PM
sigurd sigurd is offline
Pompuous Pangolin
 
Join Date: Jun 2004
Rep: 65 Posts: 784
Location: norway
Great - thanks - I think that's also what became apparent as I thought and read a bit more.
Reply With Quote
  #48  
Old 07-09-2016, 04:41 AM
sigurd sigurd is offline
Pompuous Pangolin
 
Join Date: Jun 2004
Rep: 65 Posts: 784
Location: norway
Have an old Vaio, it is running win 7. It does exactly the same except crashing faster.
Reply With Quote
  #49  
Old 07-09-2016, 04:58 AM
daiquiri's Avatar
daiquiri daiquiri is offline
Engineering and Design
 
Join Date: May 2004
Rep: 3380 Posts: 5,292
Location: Italy (Garda Lake) and Croatia (Istria)
Then I guess it is something about your michlet/godzilla files.
Reply With Quote
  #50  
Old 07-09-2016, 05:20 AM
sigurd sigurd is offline
Pompuous Pangolin
 
Join Date: Jun 2004
Rep: 65 Posts: 784
Location: norway
which I have downloaded from the OP, once for each machine...

edit: now twice, and used windows unzip plus 7zip... same same

edit: i think the only thing my computers have in common, which is not in common with yours, must be a software. so likely i'll know what causes the problem when i reinstall.
Reply With Quote
  #51  
Old 07-09-2016, 06:41 AM
daiquiri's Avatar
daiquiri daiquiri is offline
Engineering and Design
 
Join Date: May 2004
Rep: 3380 Posts: 5,292
Location: Italy (Garda Lake) and Croatia (Istria)
I hope Leo won't mind - I am attaching here the compressed folder of the Michlet on my PC. I have only used it a couple of times, but I have checked it out again right now and it works perfectly on my Win10 64-bit laptop. I hope it will work on your PC too. Let me know.
Attached Files
File Type: zip Michlet.zip (1.72 MB, 38 views)
Reply With Quote
  #52  
Old 07-09-2016, 05:00 PM
sigurd sigurd is offline
Pompuous Pangolin
 
Join Date: Jun 2004
Rep: 65 Posts: 784
Location: norway
Thanks. New files same problem. Turns out my recovery environment for windows is broken too, on the main PC. This is going to be a long weekend.
Reply With Quote
  #53  
Old 07-09-2016, 11:19 PM
sigurd sigurd is offline
Pompuous Pangolin
 
Join Date: Jun 2004
Rep: 65 Posts: 784
Location: norway
fnnnnphhggghhhhrrrr!!!!

So I downloaded win from ms, tried to do a clean install, nope, lots of junk left on C:.
Tried Godz. from C:\michlet and from H:\michlet, with the gin1.mlt: crash, crash.
resetting again, this time it cleaned out C: as it should: godz still crashing.
updating win, changing directory permissions as per TANSL: crash.

All very odd, any other ideas?

Meanwhile, I think maybe I am able to run a single instance on the Vaio, if I don't touch *anything*, and if I have managed to delay the sleep function enough. If so, then yippee, and I hopefully won't forget to send some small fee to Leo, very soon.

all the best
Reply With Quote
  #54  
Old 07-26-2016, 09:23 AM
patrik111 patrik111 is offline
Junior Member
 
Join Date: Sep 2003
Rep: 22 Posts: 52
Location: Sweden
Running michlet in the cloud

Hi,
I have had some success in running Michlet on the free tier Amazon ec2 cloud service with microsoft server 2008 r2

it does require some setting up (to get the cloud thing up and running) but as I recall, Michlet/godzilla ran fine for me.
__________________
Patrik Elfving
Reply With Quote
  #55  
Old 12-10-2016, 04:23 PM
B K B K is offline
Junior Member
 
Join Date: Oct 2015
Rep: 10 Posts: 6
Location: Croatia
Catamaran squat using Michlet

Hello,

is Michlet 9.33 able to predict amount of squat for a catamaran?
I was trying to download flotilla with that ability but was unable to find it..
And does anyone know a reliable method for squat prediction?

Thanks.
Reply With Quote
  #56  
Old 12-16-2016, 03:54 PM
Remmlinger Remmlinger is offline
engineer
 
Join Date: Jan 2011
Rep: 172 Posts: 217
Location: Germany
Quote:
Originally Posted by B K View Post
Hello,

is Michlet 9.33 able to predict amount of squat for a catamaran?
I was trying to download flotilla with that ability but was unable to find it..
Attached is the 2014-version of flotilla
Attached Files
File Type: zip flotilla.zip (4.08 MB, 15 views)
Reply With Quote
  #57  
Old 12-18-2016, 10:34 AM
B K B K is offline
Junior Member
 
Join Date: Oct 2015
Rep: 10 Posts: 6
Location: Croatia
Thank you!
Reply With Quote
  #58  
Old 01-12-2017, 06:36 AM
sigurdtjelm sigurdtjelm is offline
Tjelmeland Kayak
 
Join Date: Jan 2017
Rep: 10 Posts: 1
Location: Bergen, Norway
Leo's web site?

I try to get to Leo's web site, but it seems to somehow have been hacked by internet villains. I get up either a creepy Norwegian promising me lots of money or something that looks like coming from the Norwegian company Telenor. I use Flotilla a lot, and would like to have a link to documentation on my web site.

Do other users have the same sad experience? Ist here a new web site?

Best regards,

Sigurd Tjelmeland
Reply With Quote


  #59  
Old 01-12-2017, 07:05 AM
daiquiri's Avatar
daiquiri daiquiri is offline
Engineering and Design
 
Join Date: May 2004
Rep: 3380 Posts: 5,292
Location: Italy (Garda Lake) and Croatia (Istria)
Quote:
Originally Posted by sigurdtjelm View Post
I try to get to Leo's web site, but
See posts #28 and #29 on the 2nd page of this thread...
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Michlet 9.32 Released Leo Lazauskas Software 33 04-24-2015
08:35 PM 
Michlet 9.30 Released Leo Lazauskas Software 11 08-18-2013
11:27 PM 
Michlet 9.20 Released Leo Lazauskas Software 29 12-13-2011
10:02 AM 
Michlet 8.07 Released Leo Lazauskas Software 1 11-06-2005
06:52 AM 
Michlet 8.06 Released Leo Lazauskas Software 7 10-19-2005
02:37 AM 

Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.

All times are GMT -5. The time now is 08:14 AM.


Powered by: vBulletin Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2017 Boat Design Net