شبیه‌سازی CFD برای بهینه‌سازی پره‌های توربین بادی

CFD Simulation for Optimization of Wind Turbine Blades Project Description: We have designed a modular energy tower featuring a three-tier dome with a total height of 4 meters (tiers: 2 meters, 1 meter, 1 meter from bottom to top) and an external diameter of 2.65 meters. The dome includes 8 air inlet windows (each 0.67 meters wide) and a wind deflector at its base (5×8 meters, 0.8 meters high), contributing to a total effective height of ~5 meters with the deflector. The tower has three wind turbine tiers, each 1 meter high and 5×8 meters in footprint, open on all four sides. Initially, each tier is designed to house 15 wind turbine blades (45 blades total across 3 tiers), but the number of blades per tier is variable and must be optimized (e.g., 15×1 kW, 3×5 kW, or other configurations). Three blade designs have been developed in 3D using SolidWorks/AutoCAD (STL/IGES formats). CFD simulation is required to optimize blade scaling (size only, no shape changes), analyze airflow around the dome and blades, and determine the optimal number and arrangement of blades per tier to maximize energy output. Simulation Objectives: • Perform aerodynamic analysis of three blade designs to select the blade with the highest power coefficient (Cp) under varying scales (size adjustments only). • Determine the optimal scale (e.g., length, width) for the selected blade to maximize efficiency. • Analyze airflow (velocity, pressure) around the three-tier dome (4 meters height, tiers: 2 m, 1 m, 1 m) and its interaction with blades, considering the 8 air inlet windows and base wind deflector (5×8×0.8 m). • Optimize the number and arrangement of blades per tier (5×8×1 m environment, open on four sides) across the three tiers, testing variable configurations (e.g., 15×1 kW, 3×5 kW, or other optimized layouts such as grid, staggered, or clustered). • Estimate the total power output (target: ~48 kW) and recommend the optimal blade scale, number, and arrangement for each tier. Technical Requirements: • Software: ANSYS Fluent (preferred) or OpenFOAM. • Turbulence Model: k-ω SST or DES for high accuracy in turbulent flows. • Mesh: 2-4 million cells with refinement around blades, dome, air inlet windows, and wind deflector for accuracy. • Boundary Conditions: • Wind speed: 3-20 m/s (covering low to high wind speed regions). • Temperature: 0-40°C. • Atmospheric pressure: Standard (101.325 kPa). • Simulation Scenarios: • Test 3-5 scales for each blade design (e.g., length scaling at 1, 1.5, 2 meters or width adjustments). • Test 2-3 configurations per tier, varying the number of blades (e.g., 15×1 kW, 3×5 kW, or other optimized numbers) and layouts (e.g., grid, staggered, clustered) in the 5×8×1 m environment, open on four sides. • Analyze airflow around the dome with and without blades, focusing on the effects of 8 air inlet windows and the base wind deflector. • Standards: Compliance with IEC 61400-1 (wind turbine design) for efficiency and stability. • Models: 3D models of blades and the three-tier dome (STL/IGES) will be provided in-person after signing an NDA. Expected Deliverables: • Efficiency Report: Power coefficient (Cp) and aerodynamic efficiency for each blade design at different scales and wind speeds (3-20 m/s). • Optimal Blade Scale: Recommendation for the best blade type and scale (e.g., length, width) for maximum efficiency. • Airflow Maps: • Velocity and pressure distributions around blades, dome, air inlet windows, and wind deflector. • Streamlines and velocity vectors showing airflow patterns across the three tiers. • Analysis of dome-blade interactions, including effects of air inlets and wind deflector (e.g., wake effects, flow enhancement). • Power Output Estimate: Power output (kW) for each configuration (varying blade numbers and layouts) across the three tiers. • Optimal Configuration: Recommendation for the optimal number of blades (e.g., 15, 3, or other), their scale, position (spacing, layout), and arrangement in each 5×8×1 m tier (open on four sides) to maximize energy output (target: ~48 kW). • Technical Report: Comprehensive report (PDF) with charts, 3D airflow visualizations, comparison tables (Cp, power, configuration), and recommendations for blade scale, number, and arrangement