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Search took 0.00 seconds. Search: Posts Made By: butterflymuzzy
Forum: CFX December 10, 2017, 15:15
Replies: 50
Views: 7,457
Posted By butterflymuzzy
You are true in your side of view Glenn. But from...

You are true in your side of view Glenn. But from my naval architect point of view ı did this comparision in cfd.

I had the towing tank test results of dtmb 5415 ship model with trim-sinkage and...
Forum: CFX December 10, 2017, 06:10
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Question I m still working in the new 18.2 version of cfx but the problem has not been solved

Hello Glenn again :)

I have been trying many things in the new 18.2 version but ı could not handle with convergenge problem of the drag force and mesh folding in the new version of cfx. ı want to...
Forum: CFX December 2, 2017, 19:00
Replies: 50
Views: 7,457
Posted By butterflymuzzy
I used the default model exponent 2 each of the...

I used the default model exponent 2 each of the increase near volumes and boundaries.

But now after your recommendation in this new version, i will try to change the model exponent value from 2 to...
Forum: CFX December 2, 2017, 18:41
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Till to the 16.2 version every thing was great....

Till to the 16.2 version every thing was great. my relaxiation factors of sinkage and trim were really good in the 14.0,15.0,16.0 and 16.2 versions.

But i tried today 17.0, 17.2, 18.0 and 18.2...
Forum: CFX December 2, 2017, 06:30
Replies: 50
Views: 7,457
Posted By butterflymuzzy
thanks so much Glenn :)

Thanks so much Glenn :)

I solved my problem. My problem is i forgot to change the density of water from materials.

I used the density of salt water 1025 kg / m^3 in hydpress expression. So the...
Forum: CFX May 19, 2017, 11:16
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Glenn hello again for the ship resistance problem

Glenn Hello again. I have been working for 1 year after my last message for this toppic.

I tried many strategies. I used from 0.01 to 0.0025 sec time steps but the free surface flow didnt...
Forum: CFX April 20, 2017, 12:33
Replies: 50
Views: 7,457
Posted By butterflymuzzy
At the end :)

Thanks so much Glenn :)
Forum: CFX April 10, 2016, 18:29
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Also - you have not made any comments about...

Also - you have not made any comments about whether the surface waves have reached the boundary. In my experience this is very important and a common source of problems. Please have a look at the...
Forum: CFX April 10, 2016, 18:08
Replies: 50
Views: 7,457
Posted By butterflymuzzy
And also from this topic ı want to learn from you...

And also from this topic ı want to learn from you many things. and ı want to share my cfx ship resistance knowledge with other members.

I will share every solution setup details(with expressions)...
Forum: CFX April 10, 2016, 17:56
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Question I need your help Ghorrocks

Ghorrocks hello,

We talked about my situation 2 weeks ago,

I m still working on my cfd free surface rigid body ship resistance in cfx. i m using steady state situation.

For controlling the...
Forum: CFX March 24, 2016, 02:08
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Turbulence (KE) graphs.

Turbulence (KE) graphs.
Forum: CFX March 24, 2016, 02:07
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Mass and momentum graphs

Mass and momentum graphs
Forum: CFX March 24, 2016, 02:05
Replies: 50
Views: 7,457
Posted By butterflymuzzy
So how can my boundaries handle with waves :)...

So how can my boundaries handle with waves :) those are the todays picture of my running.

You can see the mommentum, mass, turbulence and resistance graphs of my ship. Now 1750th iteration...
Forum: CFX March 23, 2016, 23:38
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Cool So you mean nd suggest that increase of your...

So you mean nd suggest that increase of your inflation thickneses?

ı m gonna show the pictures of my cfx free surface work this evening.
Forum: CFX March 23, 2016, 14:52
Replies: 50
Views: 7,457
Posted By butterflymuzzy
Question Free Surface Ship Resistance

Hello to everyone,

My name is Mustafa from istanbul. Im naval architect engineer and ı have been using cfx for calculating free surface model ships for 1 year. but ı havent reached the true answer...
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