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(HAWT) 3-Blade Horizontal Axis Wind Turbine CFD Simulation

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Wind turbines are machines that convert wind energy into electrical energy.Turbine construction consists of three main parts, including the tower (with all components mounted), the rotor and the blades or rotating blades attached to it, and the protective cover (including control system, gearbox, generator and shafts). The way the blades are designed in wind turbines is to rotate with the wind. The rotation of the blades causes the rotor of the turbine to rotate, and as a result, the torque applied to the blades rapidly rotates in the turbine gearbox, thus converting mechanical energy into electrical energy by the generator.

This product includes a CFD simulation and training files using ANSYS Fluent software.

There are some free products to check the service quality.


HAWT and VAWT Turbine

We can divide wind turbines into two general categories based on the axis of rotation. The Horizontal Axis Wind Turbine (HAWT) and the Vertical Axis Wind Turbine (VAWT). The horizontal axis wind turbine has a rotational axis parallel to the wind direction. While the vertical wind turbine has a rotational axis perpendicular to the wind direction. Horizontal turbines are capable of operating at high altitudes at high wind speeds and are more efficient due to their direct exposure to wind direction. While vertical turbines are capable of working at lower altitude with lower efficiency. Airflow introduces two types of aerodynamic forces on each surface, including drag force and lift force. The drag force is parallel to the direction of flow over the surface. While the lift force is perpendicular to the wind flow. The main cause of wind turbine blades rotation is the presence of either of these forces or the application of both forces. The cross-section shape of the blades of the turbine is airfoil. The airfoil-shaped structure causes the wind flow velocity to vary between the upper and lower blade surfaces and thereby cause the pressure difference in the blades to rotate the blades.

Problem Description for HAWT CFD Simulation

The present study deals with the air flow on the turbine blades so that the purpose of the problem is to study the distribution of velocity and pressure on the surface of the blades and on their body. There are three areas around the blades for airflow. There is An area around the blades, an area in the front of the blades, and an area behind the blades. The airflow behaves normally in the front and behind the blades, while in the area around the blades, rotational motion of the blades causes the rotational flow.


We consider several assumptions to simulate the present problem:

The simulation of the problem is STEADY because the wind turbine is horizontal and therefore the transient effect on drag and lift forces is not taken into account.

A pressure-based solver is used for the simulation.

The effect of earth’s gravity on the flow of fluid has not been considered because the fluid is air.


All files, including Geometry, Mesh, Case & Data, are available in Simulation File. By the way, Training File presents how to solve the problem and extract all desired results.


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