24 Case study of World Trade Centre Bahrain 3

The second challenge is in the design, the architect placing three wind turbines in order from the height of the 50-story building. The three wind turbines are located on different levels. This design guarantees the overall sense of the World Trade Centre Bahrain building, avoiding too hollow between the twin towers and losing the sense of beauty, however, the three wind turbines have to face the wind of different heights. It should be noted that the wind speed gradually increases with altitude, and the higher the position of the impeller rotation, the faster the theoretical operating speed. This is unacceptable to the construction company because the three wind turbines must maintain the same standard rotation speed, otherwise, the faster the high-speed rotation of the impeller wears out faster. It will also find a solution to the wind problem. Because the wind power determines the amount of power generated, if the wind turbine cannot maintain sufficient frontal wind power for a long period of time, it cannot guarantee sufficient power generation for the building. With the help of a dynamic engineer, it is surprised to find that when the air flows through the squeezing, the wind speed can be increased by 20% when it flows to the wind turbine. What is even more surprising is the effect of architect's sloped streamlined building design on wind capture. Even if it encounters a windblown at an angle of 45 degrees, once the air stream collides with the building, the route will become S-shaped. It is poured between the two towers to form a positive airflow impact on the wind turbine and keep the impeller rotates. 
In order to avoid resonance, the engineering team created a sophisticated model and simulated 199 airflows with different climates, and measured the vibration frequency of the impeller under each climate condition. Based on this calculation, they built beams with much higher vibration frequencies than wind turbines, maximizing the risk of resonance.

Installing huge wind turbines in the most prosperous commercial centers in the city, safety issues are the most important issues designers can't ignore. The base of the World Trade Centre Bahrain is a large shopping mall. Above the mall is a high-end commercial office building. The three wind blades with a diameter of up to 29 meters rotate at high altitude, and the traffic is endless at the bottom. Once the blades accidentally break off and fall off, or encounter extremely harsh windy weather, the beam is overwhelmed and the damage is large and obvious. The best way to solve the blade break-off problem is to nest the reinforced chain inside each impeller. In addition, the engineering team took into consideration one of the biggest safety risks of the wind turbine which is resonance.