CFD of blood flow in heart

February 14, 2008, 00:09

Hi folk,

Does any one here know to use ansys fluent software to do computation fluid dynamics analysis on blood flow in heart?

I'm doing a project on CFD, but has no experience in it.

Hope someone can help me out. Thanks.

February 14, 2008, 06:49

The preferred method is not to use fluent: http://www.google.com/&q=heart+blood...oundary+method

Performing a simulation like that in Fluent would be very difficult. Without any experience in CFD it would be an exercise in futility.

What is possible for a CFD novice in Fluent is creating a very simplified model of cardiac haemodynamics using the deforming boundaries facility. The valves would require careful attention or gross over simplification.

Do all the tutorials in Fluent first paying particular attention to the dynamic mesh tuts.

February 16, 2008, 01:18

Hi Phil,

Thanks for responding. I am supposed to use Fluent to do CFD anaylsis of left ventricle flow in heart.

From what I understand, after I use a software to obtain the geometry of the left ventricle in different phases (systolic/Distolic). I have to find ways to use the geometry values and create the model in fluent? Superimpose them and use fluent to analysis to obtain the blood flow velocity, pressure etc.

DO you think it's possible just to do that, as in only in 2D phases? I'm pretty confused and really hope to find means to accomplish this.

Appreciate any help from the folks here. Thanks.

snudurupati · June 30, 2009, 17:20

Did you get to work in this problem?? I will be working on similar problem and am really interested to know your status.

mbernard · July 1, 2009, 05:44

hello
As Phik told you , it will be a really difficult calculation to do with Fluent.
First you must import a geometry file in gambit, then mesh the geometry.In this particular case, you will have to make a moving mesh, because the " walls" of your geometry will be moving during the calculation.

maybe you can start with a 2d section ( in a symmetry plane if it relevant) which must be easier to mesh...let us know about it

once the mesh and model is ok, you must define all you conditions in Fluent. You will be in a unsteady case, with a specific definition of walls movement a.s.o. you have to be sure of your flow conditions and wall behaviour "i.r.l" to be able to make a good calculation... hope you wille manage all these steps..maybe you can send us some pictures of your calculations ^^

and , finally, don't forget that Ansys Fluent support team can help you !!

snudurupati · July 1, 2009, 11:27

I just started working in this company with no other CFD experts around. They are imaging experts. They already have the 3-D model as I understand with the generated mesh.

But I will start the problem with a simple 2-D symmetric case as you suggested. Is it easy to get the moving mesh conditions along with hyper-elastic boundary conditions on the wall?? I do not want to start with any strong coupling. I would like the system to be set up properly and then will add in the future.

My company has ordered FLUENT and I am still waiting for the license. Do send me any tutorials which you think is helpful.

I will update my situation regularly and hope other experts in this problem join and help me.

February 14, 2008, 00:09	CFD of blood flow in heart	#1
Alvinsen Guest Posts: n/a	Hi folk, Does any one here know to use ansys fluent software to do computation fluid dynamics analysis on blood flow in heart? I'm doing a project on CFD, but has no experience in it. Hope someone can help me out. Thanks.

February 14, 2008, 06:49	Re: CFD of blood flow in heart	#2
Phil Guest Posts: n/a	The preferred method is not to use fluent: http://www.google.com/&q=heart+blood...oundary+method Performing a simulation like that in Fluent would be very difficult. Without any experience in CFD it would be an exercise in futility. What is possible for a CFD novice in Fluent is creating a very simplified model of cardiac haemodynamics using the deforming boundaries facility. The valves would require careful attention or gross over simplification. Do all the tutorials in Fluent first paying particular attention to the dynamic mesh tuts.

February 16, 2008, 01:18	Re: CFD of blood flow in heart	#3
Alvinsen Guest Posts: n/a	Hi Phil, Thanks for responding. I am supposed to use Fluent to do CFD anaylsis of left ventricle flow in heart. From what I understand, after I use a software to obtain the geometry of the left ventricle in different phases (systolic/Distolic). I have to find ways to use the geometry values and create the model in fluent? Superimpose them and use fluent to analysis to obtain the blood flow velocity, pressure etc. DO you think it's possible just to do that, as in only in 2D phases? I'm pretty confused and really hope to find means to accomplish this. Appreciate any help from the folks here. Thanks.

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June 30, 2009, 17:20		#4
snudurupati New Member sai Join Date: Jun 2009 Location: New Jersey Posts: 9 Rep Power: 17	Did you get to work in this problem?? I will be working on similar problem and am really interested to know your status.

July 1, 2009, 05:44		#5
mbernard New Member Join Date: Mar 2009 Posts: 18 Rep Power: 17	hello As Phik told you , it will be a really difficult calculation to do with Fluent. First you must import a geometry file in gambit, then mesh the geometry.In this particular case, you will have to make a moving mesh, because the " walls" of your geometry will be moving during the calculation. maybe you can start with a 2d section ( in a symmetry plane if it relevant) which must be easier to mesh...let us know about it once the mesh and model is ok, you must define all you conditions in Fluent. You will be in a unsteady case, with a specific definition of walls movement a.s.o. you have to be sure of your flow conditions and wall behaviour "i.r.l" to be able to make a good calculation... hope you wille manage all these steps..maybe you can send us some pictures of your calculations ^^ and , finally, don't forget that Ansys Fluent support team can help you !!

July 1, 2009, 11:27		#6
snudurupati New Member sai Join Date: Jun 2009 Location: New Jersey Posts: 9 Rep Power: 17	I just started working in this company with no other CFD experts around. They are imaging experts. They already have the 3-D model as I understand with the generated mesh. But I will start the problem with a simple 2-D symmetric case as you suggested. Is it easy to get the moving mesh conditions along with hyper-elastic boundary conditions on the wall?? I do not want to start with any strong coupling. I would like the system to be set up properly and then will add in the future. My company has ordered FLUENT and I am still waiting for the license. Do send me any tutorials which you think is helpful. I will update my situation regularly and hope other experts in this problem join and help me.