[Liusst]

Hello everyone!I do the transient research, and save case and data every time-step. How can l plot time-average contour in fluent or other sofrwares?

[LuckyTran]

The easiest way would be to turn on data sampling in Fluent so that it calculates an average. Then you have variables like mean X-velocity which are the time-averaged variables.

Saving the data every time-step does not help you because you still need to calculate the time-average...

[Liusst]

Originally Posted by LuckyTran

The easiest way would be to turn on data sampling in Fluent so that it calculates an average. Then you have variables like mean X-velocity which are the time-averaged variables.

Saving the data every time-step does not help you because you still need to calculate the time-average...

Thank you for your reply! now I have get the mean temperature contour.I doubt that If I want to make xy plot in this contour, the y values is also time-average?

[LuckyTran]

I'm not sure what you mean.

All of the mean 'blahblahblah' variables are time-averages at the their respective locations (x,y,z). So you can plot contours of average whatever against x,y,z and everything is a time-average.

[Liusst]

Originally Posted by LuckyTran

I'm not sure what you mean.

All of the mean 'blahblahblah' variables are time-averages at the their respective locations (x,y,z). So you can plot contours of average whatever against x,y,z and everything is a time-average.

Thank you, l make it

[Liusst]

Originally Posted by LuckyTran

I'm not sure what you mean.

All of the mean 'blahblahblah' variables are time-averages at the their respective locations (x,y,z). So you can plot contours of average whatever against x,y,z and everything is a time-average.

Hi , I have another question, when I begin calculation, I choose Data Sampling for time statistics, and when it finish, the contour is time-average, is it right?

[LuckyTran]

It averages over all subsequent time-steps since when you clicked the data sampling button. The default sampling interval is every time-step (1).

If you stop the calculation and restart it later, it does not lose anything. It continues to add the new information to the average.

But if you want to restart the time-sampling and clear all the statistics, you can click the reset statistics button. Or you can uncheck data sampling, run for time-step, and then check it again. But it's easier to just press the reset button.

[Liusst]

Originally Posted by LuckyTran

It averages over all subsequent time-steps since when you clicked the data sampling button. The default sampling interval is every time-step (1).

If you stop the calculation and restart it later, it does not lose anything. It continues to add the new information to the average.

But if you want to restart the time-sampling and clear all the statistics, you can click the reset statistics button. Or you can uncheck data sampling, run for time-step, and then check it again. But it's easier to just press the reset button.

It is very kind of you! now I understand it. By the way, do you know how to write the velocity inlet profile like the attachment？

[esha]

Originally Posted by LuckyTran

It averages over all subsequent time-steps since when you clicked the data sampling button. The default sampling interval is every time-step (1).

If you stop the calculation and restart it later, it does not lose anything. It continues to add the new information to the average.

But if you want to restart the time-sampling and clear all the statistics, you can click the reset statistics button. Or you can uncheck data sampling, run for time-step, and then check it again. But it's easier to just press the reset button.

hi, I have found the average velocity according to components X and Y in Tecplot 360, but I want to know why not there is mean velocity magnitude as it is present in fluent Result section for unsteady statistics. And I want to show mean velocity magnitude contours not in components. How may I do that?

[LuckyTran]

Originally Posted by esha

hi, I have found the average velocity according to components X and Y in Tecplot 360, but I want to know why not there is mean velocity magnitude as it is present in fluent Result section for unsteady statistics. And I want to show mean velocity magnitude contours not in components. How may I do that?

Check to make sure that it isn't one of the variables being loaded (you might just be blind to it).
If it isn't being loaded, then you can go to solution data and choose to export it.
You can also just calculate the velocity magnitude in tecplot from the components.

[esha]

Hi, I have calculated mean velocity magnitude in tecplot same as velocity magnitude by using expression sqrt(u**2+v**2+w**2), where, u v w are mean velocity components. but the value of mean velocity magnitude is very different as I got in Fluent? Am I doing in a wrong way? can anyone please illustrate? what should I do?

[esha]

one more thing I want to know, is it necessary to show the non-dimensional axes while showing contours of velocity?As it is my first project. I have data but now is a bit confused in analysing it. Please let me know.