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Ansys EnSight Application: Plotting a Variable Along a Rotating Component

Hello, this is Ertan Taskin from Ozen Engineering, Inc. In this video, I will demonstrate an EnSight application for plotting a parameter in a rotating component.

Introduction

We will begin by importing the data into EnSight. This is a CFX transient simulation. From the format options, I will enable the transient geometry.

Visualizing the Geometry

Display the geometry.
Apply color and opacity to the components.

As you can see, there is a tube rotating in the flow domain. In this example, the flow passes through the rotating cylinder while the rest remains a stationary fluid. This simulation can be useful for certain industries.

Creating a Line Through the Rotating Cylinder

We will create a line passing through the rotating cylinder, almost at its center, and plot certain variables over it.

Bring the corresponding cylinder and hide the others.
Create a clip using the line tool.
Position the line inside the cylinder.
Extend the line through the cylinder along the axis.

After positioning the line, select the part to clip and create the clip. A cross-sectional line is created in the volume.

Plotting Parameters

Next, we will create a plot over the selected clip:

Highlight the selected clip.
Right-click and query on the line part.
Select a parameter, such as pressure, to plot along the line.

Since this is a transient simulation, the plot will only appear when the cylinder intersects the created line. To achieve a continuous profile, follow these steps:

Creating a Continuous Profile

Start with a new EnSight project without loading the transient geometry.
Load the data and create a line as before.
Add another set of data with the transient option enabled for animation purposes.
Adjust colors and transparency for better visualization.

Now, the pressure profile is continuous, always showing as opposed to the previous case.

Additional Plots

To create another plot, such as velocity:

Return to the previous set (case one) to create the plot.
Query the clip for velocity and animate it.

Even though the velocity does not change due to the continuous data, you can see the impact of different properties by applying various conditions.

Exporting the Animation

To save the animation:

Go to File > Export Animation.
Adjust the solution time format and frame rate as needed.

This concludes the demonstration of the EnSight application for plotting a parameter in a rotating component. Thank you for watching. I hope you enjoyed it. See you in the next video.

Transcript

[This was auto-generated. There may be mispellings.]

Hello, this is Ertan Taskin from OZUN Engineering and in this video I will be demonstrating an Ansys EnSight application on plotting a variable along a rotating component. Let's start with preparing the data in Ansys EnSight. So this is going to be a CFX, a transient simulation.

From the format options, I will turn the transient geometry on. So here is the geometry and I will demonstrate further details. Let me demonstrate some of the features while coloring the components as well as providing some opacity. So as you see, let me run.

As you see, there is actually a tube rotating in the flow domain. So in this particular example, there is also a flow passing through this cylinder, rotating cylinder, and the rest is a stationary fluid.

But the flow through the cylinder is pretty much simulated, so you may find this kind of application helpful or meaningful for certain industries.

We will understand and explore how to create a line passing through this rotating cylinder, almost at the center of it, and plot certain variables over that. So in order to create a line passing through the cylinder, let me bring the corresponding cylinder and hide the others. We will work on this.

So in order to create a line, we will create actually a clip with the tool selected as line. So when you do that, there is a line shown on the screen immediately. What we have to do is position it accordingly so that it's actually inside the cylinder. So I'm going to have to play with it a bit more.

Bring it to the... Apparently, I'm just eyeballing it, but I'm bringing it to the almost to the center of it, as you see, and I will re-extend the line so that it can go through the cylinder and use it over the actual axis. So that I can move it throughout the cylinder and then create the volume...

I mean, create the lines. I need to tune it slightly more. Okay, I think this is good enough. After positioning the line, depending on where we would like to have it, we're going to have to select a part that we'd like to get the clip of and then create the clip accordingly.

As you see, a new clip is created here. Maybe it's not visible right now, but I will turn off the line tool, and now you can see this cross-sectional line is created in this volume. This is even more visible if I color it. So it's going to be in this volume.

What I want to do from now on is create a plot over this. I will highlight the selected clip, right-click, and query on line part, and I will select a parameter that is better representative for the problem. So let's take that pressure.

Now the pressure along this line is plotted, but this line is happening in a transient simulation. What I want to do is, when the cylinder rotates, I would really like to see the change in the profile.

For that, I'm going to bring all the other faces again to the screen so that we can visualize it better. Here is the corresponding line that we drew. When I rotate it, as you see, the line does not follow the object that we created.

The plot only appears at the time where the cylinder is actually coming to the point where this clip is created. But we would like to get a continuous profile throughout the time. For that purpose, I'm going to have to start from a clean sheet of an inside project. So nothing is loaded.

I will load the data again from the beginning, same result file, but on the format, I am not going to select the transient geometry. By default, it is no. So I'm going to keep it as it is and load all the parts. It's again reading.

Let me bring the calculation time to the beginning, and again, we're going to follow the same procedure to create a line. The line is created. Keep the formula. Now what I've got is a window, and I'll create another level here.

Let's call it "line two." I'll squat on this and end up with a helpful plot. This is the plot that we would like to have. And from now on, I'm going to add another set of data. It's actually exactly the same set of data, but with the transient option at this time.

So remember, I'm going to first create the line and then plot it with the no transient data. This time, I'm going to keep the currently loaded data, and the case name is going to be case two. Same data file. Format options. Transient. Yes.

And the reason why I'm doing this is actually for the animation purposes. So I am going to make the similar color adjustments. And you can do however you like, to be honest. But for the simplicity, I pretty much color with a single color with some transparency so that we can follow the rotation.

Okay. And when I have formed the rotation, now you see the pressure profile is continuous. It's always showing, as opposed to the previous case where it was just showing when the cylinder was intersecting the created line. Similar to this one, we can create another plot.

But remember, again, go back to the previous set, like case one, to create the plot. I'm going to go to the clip that I created and another query. For example, this time I'm going to plot the velocity. And let's make the animation smaller. And I'm going to keep it on the center of the screen.

And the other plot is going to be similar to the one that we created on the left at this time. I'm going to put this on the right.

And when we animate it, even though it's not changing because of the continuous velocity that I provided, for any property, you can actually perform the scalar transport equation or you can provide some plus style flow conditions. Then you can definitely see the impact of that.

But the profiles, the plots, are always going to show. As opposed to it would intermittently go black or empty in this case, of course. Let's bring the time component to the screen so we can follow the time while the animation continues. Let's see how it changes, how the time is actually changing.

Okay. So we're going to save this as an animation and we will see how it looks. For that, just to remind you, you're going to go file, export animation. And the solution time is going to be format could be arranged from here, and the frame rate could be arranged.

If you want to slow it down, you can reduce the frame rate to either half or one third, depending on how you like. Okay. So here is the saved animation. In this video, I demonstrated an Ansys EnSight application on plotting a variable along a rotating component. Thank you for watching.

I hope you enjoyed it. I'll see you in the next video. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye. Bye.

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