Repeated flow-facing wedge-shaped protrusions are explored as a means to enhance the heat transfer behaviour in a quasi-two-dimensional magnetohydrodynamic duct flow. Quasi-two-dimensionality is achieved under a strong magnetic field which are prevalent in the cooling blankets of fusion reactors. Ranges of Hartmann friction parameters (50 $\le$ $H$ $\le$ 500) and Reynolds numbers (1300 $\le$ $Re$ $\le$ 3000) are investigated. The effect of blockage $\beta$ (wedge height to duct height), pitch $\gamma$ (distance between wedges) and wedge angle $\varphi$ on heat transfer ratio $\mathit{HR}$ and efficiency $\eta$ are considered. A monotonic increase in $\mathit{HR}$ with $\beta$ is observed in the range of $\beta$ investigated. It is possible to further improve $\mathit{HR}$ by changing the geometric parameter to an optimal pitch and optimal wedge angle. Corresponding to each $H$ there exists an optimal $\beta ,$ $\gamma$ and $\varphi$ where maximum $\eta$ could be achieved. In contrast to the optimal $\beta$ which showed a monotonic increase with $H,$ optimal $\gamma$ and $\varphi$ showed a reversal in the trend after a critical $H$. Effectiveness of surface modification on the heated wall is also established through a net power analysis.

探索了重复的面向流动的楔形突起，作为增强准二维磁流体动力管道流动中传热性能的手段。在聚变反应堆冷却层中普遍存在的强磁场下实现了准二维。哈特曼摩擦参数范围（50$\le$ $H$ $\le$ 500）和雷诺数（1300 $\le$ $\mathrm{[R}Ë$ $\le$3000）进行了调查。堵塞的影响$\beta$ （楔形高度到风管高度），螺距 $\gamma$ （楔形之间的距离）和楔形角 $\varphi$ 传热比 $\mathit{人力资源}$ 和效率 $\eta$被考虑。单调增加$\mathit{人力资源}$ 和 $\beta$ 在以下范围内观察到 $\beta$调查。有可能进一步改善$\mathit{人力资源}$通过将几何参数更改为最佳螺距和最佳楔角。分别对应$H$ 存在一个最优 $\beta ，$ $\gamma$ 和 $\varphi$ 最大的地方 $\eta$可以实现。与最优相反$\beta$ 显示出单调增加 $H，$ 最佳的 $\gamma$ 和 $\varphi$ 临界后显示趋势反转 $H$。还可以通过净功率分析确定加热墙表面改性的有效性。