In this study, hydrothermal characteristics in a circular wavy microchannel (CWMC) design under laminar flow conditions with uniform heat flux is numerically studied. Parametric studies in an innovative CWMC design were carried out at various wave amplitudes, wavelengths and aspect ratios. Three dimensional numerical study was performed in the Reynolds number (Re) range from 100 to 300 with uniform heat flux (50 W/cm²) applied at bottom of the channel, treating copper as channel material and water as working fluid. The obtained results were compared to sinusoidal wavy microchannel (SWMC).The results showed that heat transfer and fluid flow characteristics were significantly influenced by wave amplitude, wavelength and aspect ratio. Velocity vectors and contours were presented to understand the heat transfer and fluid flow characteristics. Stream-wise local Nusselt number, overall performance factor, span-wise velocity and temperature variation are also presented. It is concluded that CWMC with higher wave amplitude, smaller wave length and smaller aspect ratio gives higher heat transfer augmentation with corresponding pressure drop penalty.

在这项研究中，数值研究了具有均匀热流的层流条件下的圆形波浪微通道（CWMC）设计中的水热特性。创新的CWMC设计中的参数研究是在各种波幅，波长和纵横比下进行的。在雷诺数（Re）为100至300且热通量均匀（50 W / cm ²）涂在通道底部，将铜作为通道材料，将水作为工作液。将所得结果与正弦波浪形微通道（SWMC）进行比较。结果表明，传热和流体流动特性受波幅，波长和纵横比的影响很大。提出了速度矢量和轮廓，以了解热传递和流体流动特性。还列出了沿河的局部Nusselt数，总体性能因子，沿跨度的速度和温度变化。结论是，具有更大的波幅，更小的波长和更小的长宽比的CWMC具有更高的传热增加和相应的压降损失。