| cuikahlil |
April 28, 2018 01:57 |
Inflow moving in wrong direction
1 Attachment(s)
Greetings!
I am simulating a very simple scenario of fluid entering through an inflow patch, overcoming a static boundary and exiting through an outflow. Very similar to the weir overflow in interfoam. My problem is that, instead of flowing in the x-direction, the flow goes up! I tried my boundary conditions on the blockMesh of the dambreak example, and it seemed to work fine, indicating that the problem is with my geometry.
Here is my blockMesh
Code:
convertToMeters 1;
vertices
(
(0 0 0)//0
(2 0 0)//1
(3 0 0)//2
(5 0 0)//3
(0 1 0)//4
(2 1 0)//5
(3 1 0)//6
(5 1 0)//7
(0 1.5 0)//8
(2 1.5 0)//9
(3 1.5 0)//10
(5 1.5 0)//11
(0 5 0)//12
(2 5 0)//13
(3 5 0)//14
(5 5 0)//15
(0 0 0.5)//16
(2 0 0.5)//17
(3 0 0.5)//18
(5 0 0.5)//19
(0 1 0.5)//20
(2 1 0.5)//21
(3 1 0.5)//22
(5 1 0.5)//23
(0 1.5 0.5)//24
(2 1.5 0.5)//25
(3 1.5 0.5)//26
(5 1.5 0.5)//27
(0 5 0.5)//28
(2 5 0.5)//29
(3 5 0.5)//30
(5 5 0.5)//31
);
blocks
(
hex (0 1 5 4 16 17 21 20) (30 30 15) simpleGrading (1 1 1)
hex (2 3 7 6 18 19 23 22) (30 30 15) simpleGrading (1 1 1)
hex (4 5 9 8 20 21 25 24) (30 15 15) simpleGrading (1 1 1)
hex (6 7 11 10 22 23 27 26) (30 15 15) simpleGrading (1 1 1)
hex (8 9 13 12 24 25 29 28) (30 60 15) simpleGrading (1 1 1)
hex (9 10 14 13 25 26 30 29) (30 60 15) simpleGrading (1 1 1)
hex (10 11 15 14 26 27 31 30) (30 60 15) simpleGrading (1 1 1)
);
edges
(
);
boundary
(
inlet
{
type patch;
faces
(
(0 16 20 4)
);
}
outlet
{
type patch;
faces
(
(7 23 19 3)
);
}
leftWall
{
type wall;
faces
(
(4 20 24 8)
(8 24 28 12)
);
}
rightWall
{
type wall;
faces
(
(11 27 23 7)
(15 31 27 11)
);
}
lowerWall
{
type wall;
faces
(
(0 1 17 16)
(1 5 21 17)
(9 10 26 25)
(10 6 22 26)
(6 2 18 22)
(2 3 19 18)
);
}
atmosphere
{
type patch;
faces
(
(12 28 29 13)
(14 13 29 30)
(14 30 31 15)
);
}
);
As you can see it is extremely simple. Its pretty much like an overgrown dambreak which is why i don't understand the problem.
To further clarify my U:
Code:
dimensions [0 1 -1 0 0 0 0];
internalField uniform (0 0 0);
boundaryField
{
inlet
{
type fixedValue;
value uniform (1 0 0);
}
outlet
{
type zeroGradient;
}
leftWall
{
type fixedValue;
value uniform (0 0 0);
}
rightWall
{
type fixedValue;
value uniform (0 0 0);
}
lowerWall
{
type fixedValue;
value uniform (0 0 0);
}
atmosphere
{
type pressureInletOutletVelocity;
value uniform (0 0 0);
}
defaultFaces
{
type empty;
}
}
and p:
Code:
dimensions [1 -1 -2 0 0 0 0];
internalField uniform 0;
boundaryField
{
inlet
{
type zeroGradient;
}
outlet
{
type totalPressure;
p0 uniform 0;
U U;
phi phi;
rho rho;
psi none;
gamma 1;
value uniform 0;
}
leftWall
{
type fixedFluxPressure;
value uniform 0;
}
rightWall
{
type fixedFluxPressure;
value uniform 0;
}
lowerWall
{
type fixedFluxPressure;
value uniform 0;
}
atmosphere
{
type totalPressure;
p0 uniform 0;
U U;
phi phi;
rho rho;
psi none;
gamma 1;
value uniform 0;
}
defaultFaces
{
type empty;
}
}
are as follows.
The simulation results are attached as an image.
The error might be very simple. If you could just point me in the right direction, i'd be really grateful! |
