MHD modelling

sachin15m707 · February 15, 2018, 02:16

I want to use MHD model in my work but there is some confusion in using it. so, plz anyone tells me the step by step process of using it. I am going to use B=3 Tesla.

I have attached the pics of the model and also some others pics in which conditions are applied.

https://drive.google.com/drive/folde...22?usp=sharing

qorka · February 15, 2018, 05:32

The link is not working

however for MHD module there is a discription in Fluent appendix

also you can couple fluent-maxell in workbench

sachin15m707 · February 15, 2018, 05:59

https://drive.google.com/drive/folde...22?usp=sharing

gbrajtm · February 19, 2018, 02:23

1. First, create the boundaries and initialise the CFD analysis.
2. Use the adopt option to select the mesh area where u would like to apply the magnetic field.
3. The using MHD module initialise the MHD solver and apply the magnetic field with certain value by selecting the adopted mesh area.
4. Then solve the analysis.

sachin15m707 · February 19, 2018, 05:40

Floating point exception error occurred when I run the calculations

gbrajtm · February 19, 2018, 07:37

If you follow the methods as I said u won't get any error. since its straightforward analysis.
It would be more clear if u attach the figures of ur analysis.

sachin15m707 · February 19, 2018, 07:47

https://drive.google.com/drive/folde...22?usp=sharing

this link contains the figures.

gbrajtm · February 19, 2018, 07:55

The reason for this error would be due to solution divergence.
I think you are applying the field to the entire domain. Try to create an entry length to the flow till it gets fully developed and apply the magnetic field at the developed region. That would work I guess.

sachin15m707 · February 21, 2018, 01:27

I have tried this. But it again gives the same error.

gbrajtm · February 21, 2018, 01:58

Image of Boundary conditions and set up?

sachin15m707 · February 21, 2018, 02:02

InkedDOMAIN_LI.jpg

MHD model1.JPG

MHD model2.JPG

MHD model3.JPG

MHD model4.JPG

gbrajtm · February 21, 2018, 03:04

These images are your first analysis. What changes did for new analysis?

sachin15m707 · February 21, 2018, 03:11

I want to apply magnetic field from the lower side.
I follow the steps you have told.
Floating point error comes when I use MHD model.

First, tell me you used MHD model or not.
if yes then for what kind of work.

gbrajtm · February 21, 2018, 03:14

I did the analysis for MR fluid flow under magnetic field.
Bye!!!!

sachin15m707 · February 21, 2018, 03:22

after your simulations have you write any paper

if i read that paper i think it may help me

erfan1995 · April 14, 2018, 13:53

Quote:

Originally Posted by sachin15m707

Floating point exception error occurred when I run the calculations

hi dear!
do you solve this problem?

orianajonathan · July 12, 2020, 02:19

I think this field should be used in all sections. Calculate the current input length until it grows and use the local magnetic field. It must have happened.

Pavan355 · September 4, 2020, 15:51

Magnetohydrodynamics (MHD) is the physical-mathematical framework that concerns the dynamics of magnetic fields in electrically conducting fluids, e.g. in plasmas and liquid metals. The central point of MHD theory is that conductive fluids can support magnetic fields.

February 15, 2018, 02:16	MHD modelling	#1
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	I want to use MHD model in my work but there is some confusion in using it. so, plz anyone tells me the step by step process of using it. I am going to use B=3 Tesla. I have attached the pics of the model and also some others pics in which conditions are applied. https://drive.google.com/drive/folde...22?usp=sharing

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February 15, 2018, 05:32		#2
qorka New Member Maksim Join Date: Jan 2016 Posts: 24 Rep Power: 10	The link is not working however for MHD module there is a discription in Fluent appendix also you can couple fluent-maxell in workbench

February 15, 2018, 05:59		#3
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	https://drive.google.com/drive/folde...22?usp=sharing

February 19, 2018, 02:23		#4
gbrajtm Member Dr Gurubasavaraju Join Date: Dec 2014 Location: Bengaluru India Posts: 77 Rep Power: 11	1. First, create the boundaries and initialise the CFD analysis. 2. Use the adopt option to select the mesh area where u would like to apply the magnetic field. 3. The using MHD module initialise the MHD solver and apply the magnetic field with certain value by selecting the adopted mesh area. 4. Then solve the analysis.

February 19, 2018, 05:40		#5
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	Floating point exception error occurred when I run the calculations

February 19, 2018, 07:37		#6
gbrajtm Member Dr Gurubasavaraju Join Date: Dec 2014 Location: Bengaluru India Posts: 77 Rep Power: 11	If you follow the methods as I said u won't get any error. since its straightforward analysis. It would be more clear if u attach the figures of ur analysis.

February 19, 2018, 07:47		#7
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	https://drive.google.com/drive/folde...22?usp=sharing this link contains the figures.

February 19, 2018, 07:55		#8
gbrajtm Member Dr Gurubasavaraju Join Date: Dec 2014 Location: Bengaluru India Posts: 77 Rep Power: 11	The reason for this error would be due to solution divergence. I think you are applying the field to the entire domain. Try to create an entry length to the flow till it gets fully developed and apply the magnetic field at the developed region. That would work I guess.

February 21, 2018, 01:27		#9
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	I have tried this. But it again gives the same error.

February 21, 2018, 01:58		#10
gbrajtm Member Dr Gurubasavaraju Join Date: Dec 2014 Location: Bengaluru India Posts: 77 Rep Power: 11	Image of Boundary conditions and set up?

February 21, 2018, 02:02		#11
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	InkedDOMAIN_LI.jpg MHD model1.JPG MHD model2.JPG MHD model3.JPG MHD model4.JPG

February 21, 2018, 03:04		#12
gbrajtm Member Dr Gurubasavaraju Join Date: Dec 2014 Location: Bengaluru India Posts: 77 Rep Power: 11	These images are your first analysis. What changes did for new analysis?

February 21, 2018, 03:11		#13
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	I want to apply magnetic field from the lower side. I follow the steps you have told. Floating point error comes when I use MHD model. First, tell me you used MHD model or not. if yes then for what kind of work.

February 21, 2018, 03:14		#14
gbrajtm Member Dr Gurubasavaraju Join Date: Dec 2014 Location: Bengaluru India Posts: 77 Rep Power: 11	I did the analysis for MR fluid flow under magnetic field. Bye!!!!

February 21, 2018, 03:22		#15
sachin15m707 New Member sachin Join Date: Jun 2017 Posts: 9 Rep Power: 8	after your simulations have you write any paper if i read that paper i think it may help me

July 12, 2020, 02:19		#17
orianajonathan New Member orianajonathan Join Date: Jul 2020 Location: kansas Posts: 1 Rep Power: 0	I think this field should be used in all sections. Calculate the current input length until it grows and use the local magnetic field. It must have happened.

September 4, 2020, 15:51		#18
Pavan355 New Member Join Date: Sep 2020 Posts: 2 Rep Power: 0	Magnetohydrodynamics (MHD) is the physical-mathematical framework that concerns the dynamics of magnetic fields in electrically conducting fluids, e.g. in plasmas and liquid metals. The central point of MHD theory is that conductive fluids can support magnetic fields.