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首页> 外文期刊>International journal of green energy >Experimental investigation on convection heat transfer characteristics of flat plate under environmental wind condition
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Experimental investigation on convection heat transfer characteristics of flat plate under environmental wind condition

机译：环境风条件下平板对流传热特性的实验研究

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摘要

By establishing wind tunnel and employing electrical heating method, the heat transfer characteristics of flat plate were investigated under environmental wind condition. Both the uniform and linear heat flux boundary conditions were adopted for comparison purpose. Besides, the impacts of heat flux qwm, tilt angle a and wind incidence angle. on heat transfer were explored in cases of windward and leeward facing positions. The local convection heat transfer coefficient hcx and average convection Nusselt number Nucm were obtained. The results show that, when a is small, there are two maximum values of hcx under linear heat flux boundary condition. As for Nucm, differences between the two boundary conditions seem indistinctive. At windward orientation, Nucm is not sensitive to a. While for leeward orientation, Nucm has a rapid decline progress with the increasing a, which indicates the tilt angle a is an important parameter to affect the heat transfer of plate. Finally, new correlations of Nucm have been developed, which were proven effective in engineering applications.
机译：通过建立风洞并采用电加热方法，研究了平板在环境风条件下的传热特性。为了比较目的，均采用均匀和线性热通量边界条件。此外，热通量qwm，倾斜角α和风入射角的影响。在面向上风和背风的情况下研究了传热的问题。得到了局部对流换热系数hcx和平均对流努塞尔数Nucm。结果表明，当a较小时，在线性热通量边界条件下hcx有两个最大值。至于Nucm，两个边界条件之间的差异似乎并没有区别。在迎风方向上，Nucm对a不敏感。对于下风向，Nucm随着α的增加而迅速下降，这表明倾斜角α是影响板子传热的重要参数。最后，已开发了Nucm的新关联，并已证明在工程应用中有效。

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