H-Type Vertical Axis Wind Turbine (VAWT), Mesh Motion

$210.00 Student Discount

  • The problem numerically simulates H-type vertical axis wind turbine using ANSYS Fluent software.
  • We design the 3-D model by the Design Modeler software.
  • We Mesh the model by ANSYS Meshing software, and the element number equals 1546624.
  • We perform this simulation as unsteady (Transient).
  • We use the Mesh Motion moethod to define rotational movement.
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Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
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H-Type Vertical Axis Wind Turbine (VAWT) CFD Simulation Applying ANSYS Fluent Mesh Motion Method, Tutorial

This simulation is about an H-type vertical axis wind turbine (VAWT) via ANSYS Fluent software. We perform this CFD project and investigate it by CFD analysis.

Nowadays, turbines are a reliable, clean energy source that generates electricity using the induced rotation by wind flow. However, turbine wind farms face challenging issues such as low efficiency at lower diameters for horizontal axis turbines (HAWT), disruption of the natural view of valleys, and low wind conditions.

These three problems can be solved using Vertical Axis Turbines (VAWT), where diameters as large as 200 m, commonly used in HAWTs, do not need. VAWTs are widely used offshore. Disruption of natural view is overcome, and wind conditions are more predictable and reliable in offshore wind farms.

The H-type turbine analyzed in the present work has six blades with three blades closer to the center of rotation. The turbine rotates in a -Z direction with an angular velocity equal to 14.17 rad/s. Air velocity at the inlet is equal to 5.3 m/s.

Airflow in the domain is dominantly affected by turbine rotation. Maximum air velocity in the domain is equal to 45 m/s, which is captured downstream of the turbine.

The geometry of the present model is drawn by Design Modeler software. The model is then meshed by ANSYS Meshing software. The model mesh is unstructured, and 1546624 cells have been created.

H-type Turbine Method

In this simulation, the rotational motion of the turbine blades must be defined. But instead of applying rotational motion to the blades, rotational motion is applied to the field around the blades. So, it is necessary to separate a distinct zone as the moving zone from the total computing zone. Since this turbine is one of the vertical axis turbines, the behavior of the fluid is dependent on time; because the position of the turbine blades varies over time. Then the Mesh Motion is used in cell zone conditions. In this method, the rotation axis and rotation speed must be determined.

H-type Turbine Conclusion

After simulation, the contours of velocity and pressure are obtained. Also, velocity vectors and pathlines around the turbine blades are obtained. The results show that the wind flow around the turbine blades has a rotational movement. The air mass flow rate at the inlet is equal to 272.685 kg/s.

The turbine blade’s tip speed ratio (TSR) is almost equal to 6, where tip speed and free stream velocity are equal to 30 and 5.3 m/s. According to rotation and free stream flow direction, there is a stagnation point in the minus Y direction of the turbine, which also represents the maximum pressure zone.

The combined effect of free stream flow and flow generated due to rotation differs on the inner and outer blades. On the internal blades, the pressure difference is less than on the outer blades. This can result from the higher linear velocity of the outer blades than the inner blades.

4 reviews for H-Type Vertical Axis Wind Turbine (VAWT), Mesh Motion

  1. Malinda McLaughlin III

    Can this simulation be used to optimize the design of a vertical axis wind turbine?

    • MR CFD Support

      Absolutely! The simulation provides detailed insights into the flow behavior and aerodynamic forces on the turbine blades, which can be used to optimize the turbine design for improved performance.

  2. Lexie Mayert

    Can the simulation predict the torque on the turbine shaft?

    • MR CFD Support

      Yes, the simulation can predict the torque on the turbine shaft by calculating the moment of the aerodynamic forces about the shaft axis.

  3. prem kumar naik

    sir, your simulations are really awesome. how much torque and efficiency did you get? My name is Prem Kumar Naik from IIT Kharagpur, I am also working on a project for a wind turbine on mars. can you please share those data (how much efficiency did you get) with me? my email is [email protected],Thank you

  4. Mozelle Reynolds

    How does the simulation model the rotation of the turbine blades?

    • MR CFD Support

      The simulation uses the mesh motion method to model the rotation of the turbine blades. This method involves moving the mesh nodes in the computational domain to simulate the rotation of the blades.

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