- Видео 5
- Просмотров 101 074
Zhirong Shen
США
Добавлен 6 дек 2011
Free maneuvers with moving rudders and propellers using overset grids in OpenFOAM
We implement the dynamic overset grid capability into OpenFOAM and use the technique to perform the simulations of ship maneuvering with moving rudders and propellers.
- Reference: www.sciencedirect.com/science/article/pii/S0029801815003480
- My Linkedin Profile:
www.linkedin.com/pub/zhirong-shen/69/b2a/2a
- My Researchgate Profile: www.researchgate.net/profile/Zhirong_Shen3
- Reference: www.sciencedirect.com/science/article/pii/S0029801815003480
- My Linkedin Profile:
www.linkedin.com/pub/zhirong-shen/69/b2a/2a
- My Researchgate Profile: www.researchgate.net/profile/Zhirong_Shen3
Просмотров: 6 382
Видео
Overset grid in OpenFOAM
Просмотров 88 тыс.9 лет назад
We implement the dynamic overset grid capability into OpenFOAM and use the technique to perform the simulations of ship hydrodynamics with moving rudders and propellers. - Reference: www.sciencedirect.com/science/article/pii/S0029801815003480 - My Linkedin Profile: www.linkedin.com/pub/zhirong-shen/69/b2a/2a - My Researchgate Profile: www.researchgate.net/profile/Zhirong_Shen3
20/20 Zigzag maneuver for fully appended DTMB5415M by OpenFOAM
Просмотров 3,4 тыс.10 лет назад
20/20 Zigzag maneuver for fully appended DTMB5415M. This was performed by OpenFOAM with overset grid technique. This ship model has twin propellers and twin rudders, as well as other appendages such as bilge keels, stabilized fins, struts, shafts, etc. All moving appendages are discretized by overset grids. - My Linkedin Profile: www.linkedin.com/pub/zhirong-shen/69/b2a/2a - My Researchgate Pro...
Turning circle maneuver for DTMB5415M by OpenFOAM
Просмотров 2,1 тыс.10 лет назад
Turning circle maneuver for fully appended DTMB5415M. This was performed by OpenFOAM with overset grid technique. This ship model has twin propellers and twin rudders, as well as other appendages such as bilge keels, stabilized fins, struts, shafts, et al. All these appendages are discretized by overset grids. - My Linkedin Profile: www.linkedin.com/pub/zhirong-shen/69/b2a/2a - My Researchgate ...
KCS with rotating propleller in head wave by OpenFOAM
Просмотров 1,5 тыс.10 лет назад
This is performed by OpenFOAM with overset grid technique. The overset grid technique was implemented into OpenFOAM coupled with Suggar. Total grid number is 4.8M. - My Linkedin Profile: www.linkedin.com/pub/zhirong-shen/69/b2a/2a - My Researchgate Profile: www.researchgate.net/profile/Zhirong_Shen3
dear professor can you please add a tutorial?
Hi Zhirong! It is still an impressive work after 8 years! I wonder how all components are moving as one piece when they are not contacted with each other?
This is a piece of art.
nice
Zhirong What is your email address ? I have some possible open foam cfd projects for you Thank you Walter
Increíble!!! What turbulence model did you use?
One of the best simulations I've seen.
......how
Is it possible to simulate and calculate the hydrodynamic pressure on the front of the boat?
A tutorials from scratch will be good
What is a post processing tool with moving camera capabilities?
What’s your PC speck?
Wow... This is really amazing, may I know, what kind post processing do you use?
Did you use VOF for free-surface capturing?
Yes, it was VOF.
Wow, that's absolutely impressive!!
Hello , really Nice simulation . I am a student from Brazil and my conclusion work is about predict the resistance curves of a hull (First I am trying with one model of Series 60 in one velocity), and I want to know If I could talk to you about simulations on OF, It would really help me. Since then, thank you!
How many DOFs for the DTMB 5415M did you use?
All 6DOF were enabled in that simulation.
Thanks for your video :) In OpenFOAM, I want to run the solver multiPhase/interFoam/RAS/floatingObject but by default it runs with a cuboid body, I have a cylindrical body in .stl format and I want to use it as a floating object. How can I do this? I have been able to insert the cylindrical mesh in blockMesh by using snappyHexMesh, but how can I use the cylinder as a floating object? Thanks if someone can help me out, I am doing a univerisity project
Tienes que modificar el fichero constant/dynamicMeshDict. En ese fichero es donde tienes que definir las características del objeto flotante (cuboid, jointBody, masslessBody, rigidBody, sphere). Suerte
I have a nine-year-old nephew interested in engineering. My cousin has two younger boys with engineering/mechanical bents. I would like to set them up with a laptop running CAELinux. What is the best way for them to learn how to use FreeCAD, OpenFOAM, Paraview, etc?
Naval architect
yes can you add tutorial?
amazing！！！
As a naval architect I must say: That's fucking awesome dude!
Great test zigzag maneuver or Kempf overshoot or Z maneuver! Principles of Naval Architecture
This is an amazing simulation.
Hi, is the heave dof fixed in the cases?
exelent. that so amazing
how accurate is this simulation compared to real - world?
That is really amazing, man.
hello, i'm reza from Indonesia, it's a good video! do all the simulation use OpenFOAM?
hello reza, yes, all simulations were done in OpenFOAM, but with a few customized code.
if you don't mind, may i ask the customized code of that simulation? because i have a thesis about ship maneuvers for my lecture
hello, my name is reza, i'm from Indonesia i like your simulations, if i may help to you, for give me a way how you do to make this simulation from start until finish? thank you
Very cool indeeed! is there any chance to get one's fingers onto the code?
Dear Sir I am Anties K Martin,Ph.D scholor at Indian Institute of Technology,Madras,India(IIT chennai).Currently I'm working on OpenFoam software for ship maneuvering.I have gone through your literature paper (Dynamic overset grids in OpenFOAM with application to KCS self-propulsion and maneuvering).I would like to get more guidance from you regarding maneuvering problems.So could you please share your Email Id.I will be in touch with it antieskmartin@gmail.com Thanks in Advance
Hello Anties, this is my personal email, zrshen.sjtu@gmail.com. Feel free to contact me. Zhirong
Hello Zhirong that's an impressing video! May I ask how long it took to solve this case, and what was the solver configuration. Thanks for sharing!
Hi Metin, sorry for late reply. In the below paper, there is detail information including the CPU time of the simulation. Hope it is useful. www.sciencedirect.com/science/article/pii/S0029801815003480 Zhirong
Is there any alternative to the SUGGAR, possibly openSource ?
厉害！
Very nice work!!!
Excellent work！看到过David Boger 和 Eric Paterson的FoamedOver，用的是 SUGGAR++加DiRTlib做overset grid， 请问沈兄的overset grid是如何生成与处理的呢，自己开发的openfoam lib么？如果是，请收下在下的膝盖
那个时候我从零开始写了这个从SUGGAR到OpenFOAM的接口，做法和foamedOver不太一样
Any tutorial?
Hi, Could you give us some information about how did you do to prepare this sim?
Excellent! I try to do something like that for my PhD thesis. Would you mind to point me in the right direction? any hint will be appreciated! Regards, Antonio
Hello, great video! Do you have some articles or documentation that could help me make a simulation for deciding trim optimization?
没想到啊没想到
这么屌
Impressive! Is there a plan to share your case/solver?
Amazing simulation, how many cells are there? seemingly the rudder is moving along the water surface, is it just visual tricks or it is real moving?
Thanks, Lee. The cell numbers are depend on the cases. The largest number is about 8 million for DTMB 5415M. The rudders, propellers and ship hulls are actually moving and not visual tricks. This is one of the most important features of overset grid.