The present work introduces an experimental analysis of an array of 12 elements including two heat sources and the rest are dummy elements. The effect of the second heat source position on the heat transfer coefficient (HTC) of both heat source elements within the Reynolds number range of 4108 ≤ Re_L ≤ 17,115 is studied. Moreover, 3D (CFD) numerical model is introduced and its predictions are compared with the experimental results obtained from the work on-air wind tunnel with the same array within a Reynolds number range of 3611 ≤ Re_L ≤ 14,174. The standard k-ε model has a worthy agreement with the current experimental results rather than the other turbulence models. The experimental results show that the farthest the second heat source gives the highest heat enhancement of the first upstream heat source with an enhancement ratio of 17% and 10% at Re = 8538 for in-line and lateral location, respectively. Moreover, the numerical results demonstrate that when all elements in the array are heated and compared with two heat elements only, a maximum reduction of about 19%, 15% in average Nusselt number for, an in-line and lateral position obtained when the second heat element is located at position 8 and 4, respectively at Re = 17,115.

本工作介绍了一个由12个元素组成的阵列的实验分析，其中包括两个热源，其余为虚拟元素。上的4108的雷诺数范围≤重新内两个热源元件的传热系数（HTC），第二热源位置的效果_大号 ≤17115进行了研究。此外，引入了3D（CFD）数值模型，并将其预测与从雷诺数为3611≤Re _L的相同阵列的空中风洞工作阵列获得的实验结果进行了比较。 ≤14,174。标准的k-ε模型与当前的实验结果（而不是其他湍流模型）具有很好的一致性。实验结果表明，最远的第二热源对第一上游热源的热效率最高，对于串联和侧向定位，在Re = 8538时，热效率分别为17％和10％。而且，数值结果表明，当阵列中的所有元件都被加热并且仅与两个加热元件进行比较时，第二次获得的轴向和横向位置最大减少约19％，平均平均努塞尔数减少15％。加热元件位于位置8和4，分别位于Re = 17,115。