This article shows the results of a study of the structure of turbulent flow behind a square profile ALUTEC $45\times 45\mathrm{mm}$ with T-slots. The angle of rotation of the profile relative to its axis varied $\alpha =0°$, $15°$, $30°$ and $45°$. During the experiment, the flow velocity was $5{\mathrm{m\cdot s}}^{-1}$, Reynolds number was $7.7\cdot 10^4$. The Constant Temperature Anemometry technique was used for experimental studies. To avoid backflow, the measuring plane was positioned at the rear of the profile at a distance of $x\cdot d^{-1}\approx 2.2$. As a result of the studies, it was found that the highest Taylor microscale Reynolds number and standard deviation for turbulent flow was observed in the area behind the cylinder. The width of this area is 3.5 times the width of the cylinder. With the distance from the center of the cylinder in the spanwise direction to flow the Taylor microscale Reynolds number and standard deviation sharply decreases. The maximum values of the Taylor microscale Reynolds number are observed at $\alpha =45°$ is 426 and 398. It has also been found that behind the cylinder there is some area in which the some parameters of the turbulent flow vary greatly with the change angle $\alpha$. The lowest energy dissipation rate in this range is observed for $\alpha =15°-68{\mathrm{m}}^2\cdot {\mathrm{s}}^{-3}$ and the largest for $\alpha =0°-138{\mathrm{m}}^2\cdot {\mathrm{s}}^{-3}$. We also found that the minimum value of the Kolmogorov scale and the Kolmogorov time is observed at $\alpha =0°$. The minimum values of the Kolmogorov scale $\eta =71\mathrm{\mu }\mathrm{m}$ and the Kolmogorov time ${\tau }_{\eta }=0.33\mathrm{ms}$. The maximum values for previous parameters observed at $\alpha =15°$ is $\eta =84\mathrm{\mu }\mathrm{m}$ and ${\tau }_{\eta }=0.47\mathrm{ms}$. We also found that the flow rate and standard deviation distributions between the ALUTEC profile and the ordinary square cylinder different. This can be observed when the upper part of the profile is tightly closed and the lower part is open. In this case, along with the profile inside of the T-slot, there is a generation of internal flow. This reduces the total backflow area behind the ALUTEC profile by 20% compared to an ordinary square profile.

本文显示了对方形轮廓ALUTEC后面的湍流结构进行研究的结果 $45\times 45\mathrm{毫米}$与T型槽。型材相对于其轴线的旋转角度变化$\alpha =0°$， $15°$， $30°$ 和 $45°$。在实验过程中，流速为$5{\mathrm{m·s}}^{-\mathrm{1个}}$，雷诺数为 $7。7\cdot \mathrm{1个}{0}^4$。恒温风速测定技术用于实验研究。为避免回流，将测量平面放置在轮廓的后部，距离为$X\cdot d^{-\mathrm{1个}}\approx 2。2$。研究结果表明，在圆柱体后面的区域中观察到了最高的泰勒微尺度雷诺数和湍流的标准偏差。该区域的宽度是圆柱体宽度的3.5倍。随着从圆柱体中心沿翼展方向流动的距离，泰勒微尺度雷诺数和标准偏差急剧减小。在以下位置观察到泰勒微尺度雷诺数的最大值$\alpha =45°$ 分别是426和398。还发现在圆柱体后面有一些区域，其中湍流的某些参数随变化角度而变化很大 $\alpha$。观察到该范围内的最低能量耗散率$\alpha =15°-68{\mathrm{米}}^2\cdot {\mathrm{s}}^{-3}$ 而最大的 $\alpha =0°-138{\mathrm{米}}^2\cdot {\mathrm{s}}^{-3}$。我们还发现在以下位置观察到Kolmogorov标度和Kolmogorov时间的最小值$\alpha =0°$。Kolmogorov量表的最小值$\eta =71\mathrm{\mu }\mathrm{米}$ 和柯尔莫哥洛夫时间 ${\tau }_{\eta }=0。33\mathrm{多发性硬化症}$。在处观察到的先前参数的最大值$\alpha =15°$ 是 $\eta =84\mathrm{\mu }\mathrm{米}$ 和 ${\tau }_{\eta }=0。47\mathrm{多发性硬化症}$。我们还发现，ALUTEC轮廓和普通方筒之间的流速和标准偏差分布不同。当型材的上部紧紧闭合而下部打开时，可以观察到这一点。在这种情况下，连同T形槽内部的轮廓，都会产生内部流动。与普通的方形轮廓相比，这可将ALUTEC轮廓后面的总回流面积减少20％。