Learning Forum

[javat33489]

Hi all.

I'm doing a calculation of a centrifugal pump wheel.

I calculated one wheel, recorded the data on the outlet, and now I want to transfer it to the inlet to simulate the transfer of fluid speed from one wheel to the next.

 

When specifying reading to an inlet from a recorded outlet, a distortion occurs; when I try to shift the outlet to the inlet, instead of a circle of data I get a stripe:

 

Help me please! Why is that?

[javat33489]

Colleagues. I did the same thing several times and miraculously the profile moved to the required distance, where the inlet was located.

 

 

Next, I carry out the initialization and start the calculation, but I get an error:

 

Why???

 

 

Let's go through the full path again, briefly what I did:

1. Created an out profile and specified speed, K and Omega to be written to it.

2. Performed calculations until convergence took 500 iterations.

3. Next, I create another profile for recording out2 so that the current out profile is not overwritten at the next start.

4. I read the out profile file, create a new profile based on it using ORIENT and transfer its coordinates to the place where the inlet is located.

5. In Boundary Conditions on the inlet I change the pressure to the speed (at the first start I set the pressure to determine the speed after the first wheel), in the inlet settings I set the reading data from point 4: speed, k and omega. The output also remains the same as at the first start.

6. I do the initialization and start the calculation.

7. I get an error.

 

Please help me, what did I miss?

[javat33489]

Guys, this error occurs if the recorded file has 0 or letters, but everything is fine there, I have attached a file with the recorded data from the output profile:

FILE

[Rob]

Why are you using x in all three fields in the alignment tool? 

[javat33489]

Sir, this is a bad screenshot.

in fact, I put XYZ:

 

But this has no effect. Still I get an error. Although when I do the profile orientation everything looks good.

[Rob]

If you initialise from the inlet what does the flow look like? 

[javat33489]

Sir, I did not understand your question. Can you write in more detail what you mean?

I think that if I transfer the flow from the outlet to the inlet, then the liquid will flow at the same speed as at the outlet, which is what we recorded in the file.

[Rob]

If you have translated, transferred and set the data correctly it will. Otherwise it won't, this helps work out what's going on in your model.