中文摘要：

研究了空间非均匀加热对 Rayleigh-B＆#233;nard 湍流热对流系统传热效率的影响。实验采用长方体对流槽，以水为流体介质。调节加热片的输入功率，改变系统注入能量的空间分布，对比非均匀加热与均匀加热下的湍流传热 Nu-Ra 关系。从实验结果来看，非均匀加热条件下 Nu 数的提升十分显著，湍流传热效率明显提高。

英文摘要：

We present an experimental investigation of heat transport by turbulent Rayleigh-Benard （RB）convection under non-uniform heating boundary conditions.During the measure-ments,the Rayleigh number Ra varies from 9×10 8 to 7×10 9 and the Prandtl number Pr is fixed at Pr=5.4.By adjusting the spatial distribution of the heating power in the lower plate,we ob-served an enhancement in the Nusselt number Nu by 13%.Therefore,our results reveal that the non-uniform heating can enhance the global heat transport efficiency of the system.