Simulation of a Submarine

hydrodynamicist · 12-17-10, 03:44 PM

Hello All,

I am new to your site. We simulate flow around ships and submarines. Our most recent work shows a Los Angeles Class submarine cruising on the ocean surface. The link is provided here:

http://www.youtube.com/waveanimations

I hope that enjoy the numerical simulation.

Best regards, Doug.

Diopos · 12-17-10, 04:19 PM

Doug,
very interesting, useful and beautiful!!!!
Thanks for sharing.

For the people who didn't understand the depth of what Doug posted here, I quote from his link:

Quote:

A 688 submarine traveling on the surface of the ocean is shown. The simulation was performed on a Cray XE6 supercomputer using 6,144 processors. The simulation ran for 19,000 time steps and completed in 36 hours."

(I underlined the obviously interesting - I think- parts).

V.C. Sniper · 12-17-10, 05:00 PM

OMG I am so amazed and wowed by this! Thank you so much for letting us know about this!

This looks so uber awesome!

Gerald · 12-17-10, 06:22 PM

Bill Nichols · 12-17-10, 06:58 PM

Very, very cool!

Takeda Shingen · 12-17-10, 07:08 PM

Howdy. And that video is mighty cool.

Sledgehammer427 · 12-17-10, 07:15 PM

if memory serves me right, Skip Tyler in the book Hunt For Red October used a Cray supercomputer to test the theory that the Red October was using the magneto hydrodynamic drive that made it practically silent. Is that the same thing as you guys are doing here?

It's mindboggling to wrap your head around what goes into things like this.
welcome aboard and thanks for sharing!

Sailor Steve · 12-17-10, 10:54 PM

Very nice!

WELCOME ABOARD!

ajrimmer42 · 12-18-10, 06:06 AM

That is stunning!

vienna · 12-18-10, 01:49 PM

Quote:

A 688 submarine traveling on the surface of the ocean is shown. The simulation was performed on a Cray XE6 supercomputer using 6,144 processors. The simulation ran for 19,000 time steps and completed in 36 hours."

Will the XE6 run SH5 without CTD or slow FPS?

Diopos · 12-18-10, 05:45 PM

Quote:

Originally Posted by vienna

Quote:

...

Will the XE6 run SH5 without CTD or slow FPS?

Nope, the XE6 does not have a permanent connection to UBI servers!

.

Oberon · 12-18-10, 07:54 PM

Fantastic animations and calculations there.

Looking through your gallery I see other hull projects. I like the look of model 5613, reminds me a lot of an old Dreadnought or Torpedo Ram. The Athena model is also very nice and has a nice bow cutting action which turns the vertical wave energy into horizontal. I do ponder how it would react with a curved stern like the average battleship or battlecruiser once had.

Do you model the effects of superstructure on wave breaking in later stages?

hydrodynamicist · 12-19-10, 12:23 AM

Quote:

Originally Posted by Oberon

Fantastic animations and calculations there.

Looking through your gallery I see other hull projects. I like the look of model 5613, reminds me a lot of an old Dreadnought or Torpedo Ram. The Athena model is also very nice and has a nice bow cutting action which turns the vertical wave energy into horizontal. I do ponder how it would react with a curved stern like the average battleship or battlecruiser once had.

Do you model the effects of superstructure on wave breaking in later stages?

If the superstructure affects the aspect of the design that interests us, then we will add it. It was not always possible to include such design details in the past because our code was not fast enough. Now it is. -Doug.

hydrodynamicist · 12-19-10, 12:30 AM

Quote:

Originally Posted by Sledgehammer427

if memory serves me right, Skip Tyler in the book Hunt For Red October used a Cray supercomputer to test the theory that the Red October was using the magneto hydrodynamic drive that made it practically silent. Is that the same thing as you guys are doing here?

Our goal for the 688 was just to show that we can model a complicated free-surface flow. Given that goal, we did not include many details of the boat, and we just focused on the flow around the hull. -Doug.

Sledgehammer427 · 12-19-10, 01:25 AM

Quote:

Originally Posted by hydrodynamicist

Our goal for the 688 was just to show that we can model a complicated free-surface flow. Given that goal, we did not include many details of the boat, and we just focused on the flow around the hull. -Doug.

Thanks for the clarification. It looks like you guys got exactly what you were looking for. I'm interested in how the data will be used as well, but from the looks of it (the model 5613 looks like the hullform of a projected Zumwalt class destroyer) I doubt you will be able to tell us much.

12-17-10, 03:44 PM	#1
hydrodynamicist Nub Join Date: Dec 2010 Posts: 3 Downloads: 0 Uploads: 0	Simulation of a Submarine Hello All, I am new to your site. We simulate flow around ships and submarines. Our most recent work shows a Los Angeles Class submarine cruising on the ocean surface. The link is provided here: http://www.youtube.com/waveanimations I hope that enjoy the numerical simulation. Best regards, Doug.

12-17-10, 05:00 PM	#3
V.C. Sniper Watch Officer Join Date: May 2007 Posts: 339 Downloads: 1 Uploads: 0	OMG I am so amazed and wowed by this! Thank you so much for letting us know about this! This looks so uber awesome! __________________ I only need one torpedo.

12-17-10, 06:22 PM	#4
Gerald SUBSIM Newsman Join Date: May 2008 Location: Close to sea Posts: 24,223 Downloads: 548 Uploads: 0	Welcome Aboard hydrodynamicist! __________________ Nothing in life is to be feard,it is only to be understood. Marie Curie

12-17-10, 06:58 PM	#5
Bill Nichols Master of Defense Join Date: Mar 2000 Posts: 1,502 Downloads: 125 Uploads: 0	Very, very cool! __________________ My Dangerous Waters website:

12-17-10, 07:15 PM	#7
Sledgehammer427 PacWagon Join Date: Jun 2007 Location: Drinking coffee and staring at trees in Massachusetts Posts: 2,901 Downloads: 280 Uploads: 0	if memory serves me right, Skip Tyler in the book Hunt For Red October used a Cray supercomputer to test the theory that the Red October was using the magneto hydrodynamic drive that made it practically silent. Is that the same thing as you guys are doing here? It's mindboggling to wrap your head around what goes into things like this. welcome aboard and thanks for sharing! __________________ Cold Waters Voice Crew - Fire Control Officer Cmdr O. Myers - C/O USS Nautilus (SS-168) 114,000 tons sunk - 4 Spec Ops completed V-boat Nutcase - Need supplies? Japanese garrison on a small island in the way? Just give us a call! D4C!

12-17-10, 07:08 PM	#6
Takeda Shingen Navy Seal Join Date: Mar 2000 Posts: 8,643 Downloads: 19 Uploads: 0	Howdy. And that video is mighty cool.

12-17-10, 10:54 PM	#8
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	Very nice! WELCOME ABOARD! __________________ “Never do anything you can't take back.” —Rocky Russo

12-18-10, 06:06 AM	#9
ajrimmer42 Royal Kinotropist Join Date: Mar 2007 Location: Sheffield, UK Posts: 987 Downloads: 18 Uploads: 0	That is stunning! __________________ Alex Don't judge a ship by the number of it's guns, but by the skill of it's crew.

12-18-10, 01:49 PM	#10
vienna Navy Seal Join Date: Jun 2005 Location: Anywhere but the here & now... Posts: 7,507 Downloads: 85 Uploads: 0	Quote: A 688 submarine traveling on the surface of the ocean is shown. The simulation was performed on a Cray XE6 supercomputer using 6,144 processors. The simulation ran for 19,000 time steps and completed in 36 hours." Will the XE6 run SH5 without CTD or slow FPS?

12-18-10, 07:54 PM	#12
Oberon Lucky Jack Join Date: Jul 2002 Posts: 25,976 Downloads: 61 Uploads: 20	Fantastic animations and calculations there. Looking through your gallery I see other hull projects. I like the look of model 5613, reminds me a lot of an old Dreadnought or Torpedo Ram. The Athena model is also very nice and has a nice bow cutting action which turns the vertical wave energy into horizontal. I do ponder how it would react with a curved stern like the average battleship or battlecruiser once had. Do you model the effects of superstructure on wave breaking in later stages?