Forum: CFX
February 3, 2013, 04:42
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Replies: 27
Views: 4,517
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Forum: CFX
January 17, 2013, 09:08
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Replies: 27
Views: 4,517
2D_simulation contd....
@glenn : the local convergence ,in this case ,appears good in the sense that the graph runs parallel -still i have tried to converge the continuity equation below 10^-5 ,but even when i do that ,...
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Forum: CFX
January 16, 2013, 10:35
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Replies: 27
Views: 4,517
2D_simulation contd....(update 16th _Jan
pl find attached the pictures showing :
streamlines
total pressure
global convergence
local convergence (monitor points at two locations)
i am getting a domain mass imbalance = 2. 3 % , and...
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Forum: CFX
January 12, 2013, 09:19
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Replies: 27
Views: 4,517
2D_simulation contd....
hi ,
i was playing with the timescale factor , increasing it stepwise to 2 , 4 , 6 , 10 , 20 and then checking how it affects the rate of convergence ,
1) i observed each time , there is an...
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Forum: CFX
January 6, 2013, 12:35
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Replies: 27
Views: 4,517
i have tried to play with the timescale - i.e...
i have tried to play with the timescale - i.e tried to increase it to 'physical timescale' and also tried to increase the local timescale factor, as i understood from the CFX documentation that if...
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Forum: CFX
January 2, 2013, 09:19
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Replies: 27
Views: 4,517
update :
1.i have pushed the downstream...
update :
1.i have pushed the downstream boundary further , now its 4 m away from the obstacle
2. the jump from the BL into the bulk mesh has been reduced , and made 1.2 times
i have run the...
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Forum: CFX
December 30, 2012, 08:24
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Replies: 27
Views: 4,517
as per CFX documentation :
p_abs = p_ref +...
as per CFX documentation :
p_abs = p_ref + p_static
p_tot = defined as the pressure felt at a point where fluid is momentarily bought to rest (without losses) and its KE gets converted to...
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Forum: CFX
December 30, 2012, 07:42
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Replies: 27
Views: 4,517
thanks.
regarding the pressure , which one...
thanks.
regarding the pressure , which one should i read to know the pressure upstream of the obstacle ..there are 'three' pressures which CFX Post can show :
1. absolute pressure
2. pressure...
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Forum: CFX
December 29, 2012, 08:29
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Replies: 27
Views: 4,517
Update:
Pl. find attached two slides , one...
Update:
Pl. find attached two slides , one showing the zoomed-in mesh and the other shows the streamlines.
Run stopped at 700 iterations, not yet satisfied the global convergence criteria.
W. r....
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Forum: CFX
December 26, 2012, 09:30
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Replies: 27
Views: 4,517
i don't exactly understand the following : ...
i don't exactly understand the following :
"How to put the residuals into the results file"
and the general idea i wanted to understand :
(i don't know if the above doubt and this one are...
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Forum: CFX
December 25, 2012, 13:05
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Replies: 27
Views: 4,517
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Forum: CFX
December 24, 2012, 11:50
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Replies: 27
Views: 4,517
Hi,
Thanks for your responses.
here's...
Hi,
Thanks for your responses.
here's the update from my side :
1.)i have increased the extent of fluid domain around the obstruction and made it 1m upstream of it , 2 m downstream and the...
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Forum: CFX
December 15, 2012, 14:30
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Replies: 27
Views: 4,517
i am afraid i can't show you the mesh .
i...
i am afraid i can't show you the mesh .
i have gone for auto mesh and as the domain is sweepable , i am getting almost fully hexa mesh , with cells of side 1 mm as per the sizing.
regarding...
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Forum: CFX
December 15, 2012, 10:15
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Replies: 27
Views: 4,517
2D Problem of External flow over an obstruction
Hi Friends,
I am doing a 2d simulation in CFX.
The sketch is created in x-y plane DM, and then extruded 1 cell thickness (1mm ) in the z direction.
The sketch is a rectangle of length 800 mm...
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