Calculation of the tangential forces in a turbine blade

In summary, the conversation discusses the process of performing static analysis on a turbine blade in ANSYS. The problem at hand is finding the values of tangential force, given the operating speed, stage power, axial load, and number of blades. The equation for finding the tangential force is provided, which involves the stage power, partiality degree, circumferential velocity, and number of blades.
  • #1
Alex734
3
0
Dear All,

I am trying to perform the static analysis of turbine blade in ANSYS. And i have a problem with finding the values of tangential force. How can i find it, if have following data: operating speed - 3000 RPM, stage power - 1413 kW, axial load 5544 N, number of blades - 45.

Thanks a lot!
 

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  • #2
I found this equation. Maybe it can help for someone.
Tangential force Ft can be found using the following formula:
Ft=(1000*P)/(e*v*z), [N];
where: P - stage power, [kW];
e - partiality degree;
v - circumferential velocity in the middle of the height of the blades, [m/s];
z - number of blades.
 

FAQ: Calculation of the tangential forces in a turbine blade

1. What is the purpose of calculating tangential forces in a turbine blade?

The calculation of tangential forces in a turbine blade is important for understanding the stresses and loads that the blade will experience during operation. This information is crucial for designing a turbine that can withstand these forces and operate efficiently.

2. How are tangential forces calculated in a turbine blade?

Tangential forces in a turbine blade are typically calculated using mathematical equations based on the blade geometry, fluid properties, and operating conditions. These equations take into account factors such as blade angle, blade length, fluid velocity, and fluid density.

3. What factors affect the magnitude of tangential forces in a turbine blade?

The magnitude of tangential forces in a turbine blade can be affected by a variety of factors such as blade design, fluid properties, operating conditions, and blade material. For example, a longer blade or a higher fluid velocity will result in higher tangential forces.

4. What is the relationship between tangential forces and turbine efficiency?

Tangential forces can impact turbine efficiency by causing stresses and deformations in the blade, which can lead to decreased performance or even failure. Therefore, it is important to accurately calculate and account for these forces in order to optimize turbine efficiency.

5. Are there any techniques for reducing tangential forces in a turbine blade?

There are several techniques that can be used to reduce tangential forces in a turbine blade. For example, blade design modifications, such as changing the blade angle or adding curvature, can help to distribute the forces more evenly. Additionally, using materials with higher strength and stiffness can also help to reduce the impact of tangential forces.

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