Скачать или смотреть Vertical Axis Wind Turbine - Moving Frame of Reference | ANSYS Fluent

This is Part 1 of 2 that is Moving Frame of Reference Approach...
I recently completed a simulation project on the aerodynamic analysis of a Darrieus-type Vertical Axis Wind Turbine (VAWT) using ANSYS Fluent. The goal of this project was to study the flow behavior, pressure distribution, and torque generation on the turbine blades under steady wind conditions.

In this project, I analyzed a 3-bladed VAWT model with a 0.12 m diameter and a chord length of 0.02 m, operating at an inlet wind speed of 10 m/s and a rotational speed of 40 RPM.
The study was divided into two main parts:
1. Moving Reference Frame (MRF) approach to simulate the turbine rotation under a steady-state assumption ( Part 1 of Video)
2. Sliding Mesh (SM) method for a more realistic transient analysis. (Part 2 of Video)

Through this project, I gained valuable insights into rotating reference frames, transient flow simulation, and wake formation in wind turbine aerodynamics. It also helped me strengthen my understanding of how CFD can be used to predict turbine performance and optimize blade design for better efficiency.

Results:
• Velocity Contour:
Note that it's very clear the effect of when the blade is perpendicular to the flow — a huge recirculation bubble is made. This will negatively affect other turbines placed downstream of this one. This is a very important thing to consider when designing an array of VAWTs.
• Pressure Contour, is very much similar to Velocity Contour
• Vorticity Contour:
Another interesting thing to analyze is the Vorticity distribution downstream of the turbine. This strongly affects how we would distribute more turbines in case we are designing an array of them.
We can see the vorticity emanating from the tips of the blades. Also note that for the blade that is almost aligned with the flow, the vorticity does not propagate much (is less intense).
• Turbulence Kinetic Energy's relationship with the Vorticity Contours

🔗 Project files available here for reference & learning: https://archive.org/details/vertical-...