|
[Sponsors] |
April 8, 2013, 12:05 |
Giving fluid properies
|
#1 |
New Member
Join Date: Apr 2013
Posts: 6
Rep Power: 13 |
I am final year student doing a project in ansys cfx. I am modelling left coronary artery and studing the motion of blood in it. kindly help me on how to give the properties of blood in cfx...
|
|
April 8, 2013, 18:28 |
|
#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,830
Rep Power: 144 |
Is your question how to model blood properties (ie you already know the properties you want to apply but do not know how to apply them) or do you have no idea what properties you should use to model blood (then the answer is to do a google search or a literature review and read about what other people have done).
|
|
April 9, 2013, 12:46 |
|
#3 |
New Member
Join Date: Apr 2013
Posts: 6
Rep Power: 13 |
my question is what all properties are to be applied and how to apply them... kindly help me...
|
|
April 9, 2013, 13:14 |
|
#4 |
Senior Member
Erik
Join Date: Feb 2011
Location: Earth (Land portion)
Posts: 1,184
Rep Power: 23 |
This is really, really basic. Have you even tried to do it yet? I'm sure you could figure it out in 2 seconds if you tried. In CFX pre, go to materials, right click, insert new material, and you can figure it out from there.
|
|
April 10, 2013, 07:11 |
blood properties
|
#5 |
New Member
ressan
Join Date: Apr 2013
Posts: 4
Rep Power: 13 |
Hi, the blood is non-Newtianon fluid i.e., the viscousity is function of rate strain therefore in Fluent select define > material and select nontainon fluid and selct model such as power_law and input constant.
|
|
April 10, 2013, 07:21 |
|
#6 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,830
Rep Power: 144 |
There are many different rheologies used to model blood. Ressan mentions one.
But significant contributions occur due to the particles in the blood. In particular, the red blood cells stretch and squeeze to get through the tin capilliaries. Blood also has visco-elastic properties. Whether these are important depends on what you are trying to model. |
|
April 10, 2013, 12:48 |
|
#7 | |
New Member
Join Date: Apr 2013
Posts: 6
Rep Power: 13 |
Quote:
I have already tried working in ansys and i am still working. Its just that its a little confusing for first time user like me. |
||
April 10, 2013, 12:49 |
|
#8 | |
New Member
Join Date: Apr 2013
Posts: 6
Rep Power: 13 |
Quote:
|
||
April 10, 2013, 12:50 |
|
#9 |
New Member
Join Date: Apr 2013
Posts: 6
Rep Power: 13 |
||
October 4, 2017, 08:25 |
|
#10 |
New Member
Join Date: May 2013
Posts: 21
Rep Power: 13 |
Dear ami1991 and other CFD team!
I also have the same question than ami1991 some years ago. I want to simulate blood flow in ANSYS using the PTT model. My question is: Is it possible to give the properties of blood (relatively to PTT model) in CFX?? I think that in Fluent is not possible... Is is possible in CFX to introduce the properties and how? Someone did it? And can help me? Thank you very much! |
|
October 4, 2017, 20:46 |
|
#11 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,830
Rep Power: 144 |
CFX has a number of ways of specifying material properties. It also has a number of non-Newtonian models built in. But it does not have the PTT model - as I stated in my previous post it appears this is a 1D fluid model, so it is not suitable for CFX as CFX is a 3D solver. But if you can express the PTT model parameters in one of the existing CFX models then it will be easy to put into CFX. More sophisticated models can be done using CEL and/or user fortran.
I recommend you have a look at the material properties available in CFX and see what could be adapted to the model you wish to use. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
mass flow in is not equal to mass flow out | saii | CFX | 12 | March 19, 2018 05:21 |
Difficulty in calculating angular velocity of Savonius turbine simulation | alfaruk | CFX | 14 | March 17, 2017 06:08 |
My Revised "Time Vs Energy" Article For Review | Abhi | Main CFD Forum | 2 | July 9, 2002 09:08 |
Terrible Mistake In Fluid Dynamics History | Abhi | Main CFD Forum | 12 | July 8, 2002 09:11 |
fluid hot volume in fluid cold volume | zahid | FLUENT | 4 | June 1, 2002 09:11 |