Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Design > Software
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #16  
Old 09-23-2009, 11:04 PM
Ad Hoc Ad Hoc is offline
Naval Architect
 
Join Date: Oct 2008
Rep: 1933 Posts: 3,025
Location: Japan
sizzurp
"..My question is just if there's any software to calculate wave patterns.."
There are plenty about (for the type you are looking for), but are they accurate, is a totally different matter. That comes down to the how's and why's, not the pretty pictures.

There has also been a lot of work done by the MCA in the UK on wash and also by Whittaker et al, Dand et al, and Kofoed-Hansen et al.

You may find the attached of interest, not widely obtained. These are generally more for the "mathematically" minded that do research in that field.
Attached Files
File Type: pdf JMST Narrow Channel Waves.pdf (402.7 KB, 174 views)
File Type: pdf JMST Breaking waves in narrow channel.pdf (547.1 KB, 344 views)
File Type: pdf JMST Non-linear waves.pdf (554.8 KB, 144 views)
Reply With Quote
  #17  
Old 09-24-2009, 04:33 AM
sizzurp sizzurp is offline
Junior Member
 
Join Date: Sep 2009
Rep: 10 Posts: 12
Location: Spain
For now, it don't have to be very accurate. I don't need to know the exact height of waves, just want to compare some hulls. It's just a little research before I start.

And thanks for the recommendations.
Reply With Quote
  #18  
Old 09-24-2009, 07:38 AM
Ad Hoc Ad Hoc is offline
Naval Architect
 
Join Date: Oct 2008
Rep: 1933 Posts: 3,025
Location: Japan
sizzurp
I'm confused. If you're not worried about the accuracy, what difference does it make which software you use? Without any kind of validation, the answers you're going to get, as a sensitivity analysis, will be no better than any other software, and just as inaccurate as each other.

It is somewhat akin to using a saw, to hammer in a nail...you can do it, but not very well...and not every nail consistently, nor easily.

Just questioning your rationale in using a method that is not consistently accurate for all applications (non of them are), for comparisons, doesn't make sense. From a research, phd, perspective, but from a layman's perspective, it is fine...
Reply With Quote
  #19  
Old 09-24-2009, 08:18 AM
sizzurp sizzurp is offline
Junior Member
 
Join Date: Sep 2009
Rep: 10 Posts: 12
Location: Spain
I meant: I don't need to know (for example) the exact wave height on a mm.. I just want an easy in use software for my first calculations. And not a program were I need to know every little detail for the input.
Reply With Quote
  #20  
Old 09-24-2009, 09:56 AM
Leo Lazauskas's Avatar
Leo Lazauskas Leo Lazauskas is offline
Senior Member
 
Join Date: Jan 2002
Rep: 1816 Posts: 1,422
Location: Adelaide, South Australia
Quote:
Originally Posted by sizzurp View Post
I meant: I don't need to know (for example) the exact wave height on a mm.. I just want an easy in use software for my first calculations. And not a program were I need to know every little detail for the input.
Michlet will allow you to quickly compare simple hullforms like a Wigley or a parabolic strut. You can also see (far-field) wave patterns of multihulls with up to five demihulls. See the example section in the documentation of simple cases for catamarans and SWATH, trimarans, tetrahulls, SLICE, and pentamarans.
Reply With Quote
  #21  
Old 09-24-2009, 10:14 AM
Leo Lazauskas's Avatar
Leo Lazauskas Leo Lazauskas is offline
Senior Member
 
Join Date: Jan 2002
Rep: 1816 Posts: 1,422
Location: Adelaide, South Australia
And a little more reading material for you...

I know you aren't specifically interested in the resistance aspects, but check out some of the high form factors in the paper by Molland et al. 1.47 for a catamaran!
Attached Files
File Type: pdf ijme36.pdf (1.97 MB, 269 views)
File Type: pdf ijme69.pdf (220.5 KB, 353 views)
File Type: pdf ijme119.pdf (2.80 MB, 287 views)
File Type: pdf ijsct85.pdf (319.0 KB, 222 views)
Reply With Quote
  #22  
Old 09-24-2009, 01:23 PM
yipster's Avatar
yipster yipster is offline
Senior Member
 
Join Date: Oct 2002
Rep: 1083 Posts: 3,337
Location: netherlands
and to hear another why not this extra book by Odd M Faltinsen Hydrodynamics of high-speed marine vehicles
Reply With Quote
  #23  
Old 10-04-2009, 07:36 PM
formsys formsys is offline
formsys
 
Join Date: May 2007
Rep: 37 Posts: 73
Location: Australia
The Hullspeed module in the Maxsurf suite of software uses a slender body method to calculate wake waves and resistance for slender hull forms.
http://www.formsys.com/maxsurf/msproducts/hullspeed
The attached picture gives an example of its output.
There are more technical details in the Hullspeed user manual in the download section of the FormSys web site.
Attached Thumbnails
Which software can I use for wave patterns?-hullspeed.jpg  
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
Fluctuating LWL and wave patterns. Omeron Boat Design 7 03-06-2008 12:11 PM
Non slip patterns in Gel spegtek Materials 1 09-23-2006 09:11 AM
Free patterns? Is there anybody who knows? millos_bgd Boat Design 6 04-08-2005 06:24 AM
Hatch Patterns Willallison Software 2 01-29-2004 10:05 PM
flatten patterns Boat Design 4 12-10-2001 07:30 PM


All times are GMT -5. The time now is 07:21 AM.


Powered by: vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2012 Boat Design Net