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Numerical Investigation of the Effect of Dust on the Performance of a H-type Vertical Axis Wind Turbine

Golmakani, Atousa | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57333 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Taeibi Rahni, Mohammad; Salimi, Mohammad Reza
  7. Abstract:
  8. Nowadays, due to the increase in energy demand and the limitations of using fossil fuels, renewable energy plays an important role in the world's energy supply. Wind turbines generate electrical power using the kinetic energy of the wind. This research investigates the effects of dust and particles on the flow in a vertical axis wind turbine blades. The performance of a H-type vertical axis wind turbine in dusty flow was numerically investigated in two and three dimensions. The effects of two dimensionless numbers (Stokes and particle loading) on the turbine’s aerodynamics and output power were examined. In addition, the erosion rate of turbine blades due to dust particles and turbine efficiency were studied and calculated based on the second law of thermodynamics. The Eulerian-Lagrangian approach was used to simulate our particulate two-phase flow. Note, the effects of adding particles on the horizontal axis of wind turbines have been investigated before. However, research on the H-type vertical axis wind turbine is completely innovative in two- and three-dimensional modes. The results show that the turbine has an optimal rotational speed, where the turbine power is maximized. Also, for airfoils suitable for H-type vertical axis wind turbines, the lowest entropy generation occurs at the optimal rotational speed. With increase in mass percentage of particles, the turbine's power decreases, especially with the reduction of the diameter of the particles. On the other hand, the highest erosion rate is observed at the leading edge of the airfoils of the turbine blades, which increases with increase in rotational speed and mass percentage of the particles
  9. Keywords:
  10. Vertical Axis Wind Turbine ; Two Phase Flow ; Numerical Simulation ; Erosion ; Entropy Generation ; H-Type Vertical Axis Wind Turbine

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