Experimental investigations have been conducted on flow and thermal performance of coolant flow boiling in diamond micro arrays with different contact angles (90°, 120° and 150°). Working fluid circulating under mass flow rates in the scope of 21.54–962.75 kg/(m²·s). Images captured by high-speed camera with 500fps showed the coolant flow pattern in these micro pin-fin arrays. Comparative experiments of thermal performance of four micro pin-fins were performed at inlet temperature of 30 °C. The flow patterns of flow boiling could be divided into four states: film boiling state, transition state, nucleate boiling state and single-phase state. The pressure drop of hydrophobic surface is 90% lower than that of bare copper surface as the mass flow rate is 215 kg/(m²·s) The flow resistance is reduced after being covered with hydrophobic coatings. With the increase of contact angles, the micro arrays' thermal characteristics becomes deteriorated rapidly. The flow and thermal performance of diamond micro arrays is better than other three shapes, as the structure of diamond pin-fins plays a significant role in separation and migration of vapor film and bubbles. When the mass flow rate reaches 448 kg/(m²·s), the heat transfer coefficient of diamond is 76% higher than that of triangle.

对不同接触角（90°、120°和150°）金刚石微阵列中冷却剂流动沸腾的流动和热性能进行了实验研究。工作流体在21.54-962.75 kg/(m ² ·s)范围内的质量流量下循环。由高速摄像机以 500fps 拍摄的图像显示了这些微型针鳍阵列中的冷却剂流动模式。在 30 °C 的入口温度下进行了四个微型针翅片的热性能对比实验。流动沸腾的流动形态可分为四种状态：膜沸腾状态、过渡状态、核沸腾状态和单相状态。当质量流量为215 kg/(m ^{2 )时}，疏水表面的压降比裸铜表面的压降低90%·s) 被疏水涂层覆盖后流动阻力降低。随着接触角的增加，微阵列的热特性迅速恶化。金刚石微阵列的流动和热性能优于其他三种形状，因为金刚石针翅结构对汽膜和气泡的分离和迁移起着重要作用。当质量流量达到448 kg/(m ² ·s)时，金刚石的传热系数比三角形高76%。