To accelerate the start-up period of Gatton NDDCT, windbreak walls are introduced under the heat exchanger inspired by theoretical analysis, which suggests quicker start-up with increasing values of β, which is a factor that represents the proportion of crosswind redirected into the tower via the heat exchanger by windbreak walls. Three-dimensional (3-D) numerical models at three different wind angles of attack and at crosswind ranging from 1 m/s to 15 m/s produce results consistent with the theoretical analysis. The start-up time with crosswind always follow the similar trend, i.e., first increasing to the peak and decreasing monotonously until a critical speed, beyond which the start-up time keeps almost constant. The air flows through individual heat exchanger bundles due to the interaction between the natural draft (due to heating) and the crosswind effects. These effects are resolved separately at each bundle location at the acting wind speed. Finally, optimum orientations to accelerate the start-up duration are numerically computed. When the wind is mild at up to 4 m/s, windbreak walls are better designed at a 60° wind angle of attack. For crosswind speeds 5 to 8 m/s, 0° windbreak walls have a better performance. Finally, for wind speeds over 9 m/s, the 30° windbreak walls seem to be most effective. These results should be applicable to any relatively short NDDCT and also imply that at sites with non-uniform wind conditions, a facility to change the windbreak wall orientation with respect to the wind speed would be useful.

为了加快Gatton NDDCT的启动时间，受理论分析的启发，在换热器下引入了防风墙，这表明随着β值的增加，启动速度更快。，这是代表通过防风墙通过热交换器重定向到塔中的侧风比例的因素。在三种不同的迎风角度和侧风范围为1 m / s至15 m / s的三维（3-D）数值模型产生的结果与理论分析一致。带有侧风的启动时间始终遵循类似的趋势，即首先增加到峰值，然后单调减小直到达到临界速度，超过该临界速度启动时间几乎保持恒定。由于自然通风（由于加热）和侧风效应之间的相互作用，空气流经各个热交换器束。这些影响在每个束位置以作用风速单独解决。最后，通过数值计算可以加快启动时间的最佳方向。当风温和至4 m / s时，防风墙的设计更好，风迎角为60°。对于5至8 m / s的侧风，0°防风墙具有更好的性能。最后，对于超过9 m / s的风速，30°防风墙似乎是最有效的。这些结果应适用于任何相对较短的NDDCT，并且还暗示在风况不均匀的站点上，使用相对于风速改变防风墙定向的设施将很有用。