Forum: FLUENT
October 5, 2011, 15:10
|
|
Replies: 42
Views: 7,563
hi amir,
taking a look at post #7 (2011 not...
hi amir,
taking a look at post #7 (2011 not post #1 in 2002!!), I think ac problem is a simple duct(2d) and wants to solve a fully developed flow with pressure gradient changing by a function. so it...
|
|
Forum: FLUENT
October 2, 2011, 10:10
|
|
Replies: 42
Views: 7,563
|
|
Forum: FLUENT
October 2, 2011, 08:47
|
|
Replies: 42
Views: 7,563
hi,
I like this post!!! :) :)
and about Amir,...
hi,
I like this post!!! :) :)
and about Amir, it seems that he doesnt want to accept his mistakes. however I even used analytical equations to show him his mistake, but he is grouching about this....
|
|
Forum: FLUENT
October 1, 2011, 16:45
|
|
Replies: 42
Views: 7,563
|
|
Forum: FLUENT
October 1, 2011, 09:06
|
|
Replies: 42
Views: 7,563
hi,
to Amir:
I didnt say you can use...
hi,
to Amir:
I didnt say you can use "pressure inlet". I said you can use pressure boundary condition for inlet. so perhaps using pressure outlet for both inlet and outlet results good. but if...
|
|
Forum: FLUENT
October 1, 2011, 04:10
|
|
Replies: 42
Views: 7,563
hi,
which idea do you mean that I changed?
I...
hi,
which idea do you mean that I changed?
I told that for a fully developed flow you can use pressure BC and I persist on it. as I said the relation between first thread of inlet and a duct in...
|
|
Forum: FLUENT
September 30, 2011, 16:52
|
|
Replies: 42
Views: 7,563
hi,
consider the inlet thread of cells. we have...
hi,
consider the inlet thread of cells. we have zero gradient of velocity on it and constant pressure in its plane. so tell me what is the difference between this thread of cells and a duct of the...
|
|
Forum: FLUENT
September 30, 2011, 15:23
|
|
Replies: 42
Views: 7,563
hi,
if you neglect pressure variation in plane...
hi,
if you neglect pressure variation in plane of boundary, writing bernouli+headloss equation you see that for these two streamlines all variables are the same:
1-streamline starting from inlet...
|
|
Forum: FLUENT
September 30, 2011, 10:44
|
|
Replies: 42
Views: 7,563
hi,
no. for the control volume you specified,...
hi,
no. for the control volume you specified, if the space between box and inlet,outlet boundaries is large enough, both pressure-pressure and periodic results the same. but if the space is not so...
|
|
Forum: FLUENT
September 30, 2011, 03:19
|
|
Replies: 42
Views: 7,563
hi,
I didnt understand your answer very well,...
hi,
I didnt understand your answer very well, but I think for any case setting pressure-pressure BC (which means zero Gradient of velocities) results a fully developed velocity profile at inlet. but...
|
|
Forum: FLUENT
September 29, 2011, 16:57
|
|
Replies: 42
Views: 7,563
consider a duct and some small boxes inside it....
consider a duct and some small boxes inside it. boxes are at the centre and they are placed in the duct with some space between each other(spaces are even). then you can run the flow with a periodic...
|
|
Forum: FLUENT
September 29, 2011, 16:38
|
|
Replies: 42
Views: 7,563
hi,
no. I think using pressure BC in fluent is...
hi,
no. I think using pressure BC in fluent is similar to fixedValue of p and zeroGradient of U in OpenFOAM. if I remember correctly, one of my friend do exactly the same problem in fluent. and...
|
|
Forum: FLUENT
September 29, 2011, 16:10
|
|
Replies: 42
Views: 7,563
hi,
not a good solution!
if you want to have...
hi,
not a good solution!
if you want to have a fully developed flow inside a duct or pipe and you want to model short length, forget about periodic BCs and simply set inlet and outlet as pressure...
|
