Design of a Radial Turbine using Ansys TurboSystem
Hello, welcome to my blog where I like to showcase exciting and interesting engineering simulations using ANSYS tools. My name is Mert Berkman with Ozen Engineering, Inc. We have many videos online on YouTube and our website. If you search for Ozen Engineering on the web, you can find very interesting videos regarding electronics, mechanical, fluids, thermal, optics, and all sorts of engineering simulations using ANSYS tools.
Focus of Today's Video
Today, we're going to concentrate on the design and simulation of a radial turbine. For this purpose, I've already opened up ANSYS Workbench, which contains various tools. Under component systems, I'm going to use Vista RTD (Radial Turbine Design). This tool can also be used for pump design.
Defining Operating Conditions
Here's what we essentially do:
- Define an operating condition for our turbine.
- Provide the tool with limitations or parameters to locate the design, such as ratios, etc.
- Size the turbine blade using a mean and 1D mean line design.
Setting Parameters
Let's start by setting our parameters:
- Hot combusted air coming in at 2000 Kelvin and 200 kilopascals.
- Mass flow rate of approximately 0.1 kilograms per second.
- Desired machine operation at 1000 RPM.
- Shroud inlet to exit ratio of 70%.
- Number of vanes: 13.
- Axial length with a length to diameter ratio of 50%.
- Clearance of 1 millimeter.
Calculation and Results
Upon hitting calculate, the tool generates a mean line design:
- Inlet conditions.
- Outlet conditions.
- Performance metrics, including critical efficiency.
The tool quickly sets up the case and solves it. The setup includes:
- Operating conditions as defined.
- Solution space stage, which is very fast.
- Results presented in the CFD Post software.
Post-Processing
The CFD Post software is a very useful post-processing tool typically used with ANSYS CFX and ANSYS Fluent, the main CFD tools. Here, you can observe:
- Meridional velocity across the section.
- Different values such as pressures, temperatures, etc.
In this presentation, I won't delve into these details. We will have at least two more presentations following this one, discussing blade design and BladeGen tools.
Thank you so much for watching!
Hello, welcome to my blog where I like to show exciting and interesting engineering simulations using ANSYS tools. My name is Mert Berkman with Ozen Engineering, and we have many videos online on YouTube and our website.
If you visit Ozen Engineering on the web, you can see very interesting videos regarding electronics, mechanical, fluids, thermal, optics, and all sorts of engineering simulations using ANSYS tools. Today, we're going to concentrate on the design and simulation of a radial turbine.
For this purpose, I've already opened ANSYS Workbench, which has various tools in it. Under Component Systems, I'm going to go to Vista RTD, which is for radial turbine design. You can also use this particular tool for pump design.
We essentially define an operating condition, such as a design point for our turbine, and then give our tool some limitations or parameters to locate the design. This includes ratios, etc., so it can size the turbine wheel in a sense, doing mean line design.
Some of these are trademarks, while others are not. Method edges will be correct. When working on lines, surfaces, here you can see some of these inlets, these are inboard and outboard surfaces, which are required steps. I'm going to show the contraption.
It will undergo a Dynamic Balance Test by the Martin Wayland method. I have two positions for the design. So, let's start with putting our temperatures. We have hot combusted air coming in at 2000 Kelvin, 200 kilopascals, and let's say it's about 0.1 kilograms per second with this expansion ratio.
We'd like our machine to operate at 1000 RPM, and I'll leave the rest of these flow angles, etc., the same for now. Let's look at our geometry. Here, let's do a shroud inlet to exit of 70%, and then let's have 13 number of vanes.
The axial length instead of using correlations, I just want to specify my own length-to-diameter of 50%. Let's assign a clearance of 1 millimeter. As we hit calculate, our tool will come up with a mean line design.
As you can see, there are two mean lines at the inlet, three mean lines on the outlet side, and in the top block, it's our essentially input that we put in. The second block shows the performance, critical efficiency. We have a very good performance of the machine.
The change in the T and uh goes through the blade design, it sets the case up, and then solves it very quickly. In the setup, if we click on it, what you see on the left side gives the operating condition as we defined.
It then goes through the solution space stage, which was very fast, and then it generates results. These results are actually presented in the CFX post software, which is a very useful post-processing tool typically used with ANSYS CFX and ANSYS Fluent, which are the main CFD tools.
What you can see here is the meridional velocity across the section, and the user can look at different values, such as pressures, temperatures, etc., as they wish. We'll have at least two more presentations following this, talking more about blade design and blade gen tools. Thank you so much.
