-
-
December 29, 2022 at 1:52 am
Mohammad Nasreddine
SubscriberHello Everyone,
I was simulating my wind turbine (3 blades) using CFX at steady state. The power converged to a value of 290 W, while I designed my wind turbine to give me 700 W approximately. Does anyone know what is wrong? I thought that maybe ANSYS is only calculating the power for one blade but I am not sure how to know.
I would appreciate any help.
-
January 3, 2023 at 6:16 pm
rfblumen
Ansys EmployeeTo verify that all blades are being used in the power calculation (where Power=Torque*Angular Velocity), look at the region used in the torque calculation to ensure it represents all three blades.
If all blades are being used in the torque calculation, then things to check are:
-Boundary conditions (i.e. inlet wind velocity, angular velocity)
-Model convergence
If the above checks out, I would look at velocity vector plots from 10%, 50%, and 90% blade span in CFD-Post. An easy way to do this is create isosurfaces of radius at the appropriate locations and plot vectors on these surfaces. Do the resulting velocity triangles at blade leading edge/trailing edge agree with your design calculations? Is the leading edge flow incidence as expected? Is there flow separation on the blades that's resulting in the reduced power output?
-
- You must be logged in to reply to this topic.

Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Suppress Fluent to open with GUI while performing in journal file
- Floating point exception in Fluent
- What are the differences between CFX and Fluent?
- Heat transfer coefficient
- Getting graph and tabular data from result in workbench mechanical
- The solver failed with a non-zero exit code of : 2
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
-
2688
-
2138
-
1355
-
1140
-
462
© 2023 Copyright ANSYS, Inc. All rights reserved.