射流冷却是高热流密度换热的有效方法之一，其热沉形状是影响换热的关键因素。提出一种新型圆锥体热沉，应用RNG k-ε湍流模型，对新型单圆锥体热沉进行单孔水冷散热数值模拟，并进行试验验证。结果表明：单圆锥体热沉的散热效果明显强于常规平板热沉，前者的射流流体域比后者多一个转折区，转折区内存在二次冲击，使换热得到强化。雷诺数越大，圆锥体热沉散热性能越优异;在不同锥角(15°~60°)的单圆锥体热沉传热模拟中，当锥角在45°左右时，热沉表面的平均努塞尔数数最高;圆锥体底面直径d₁和射流孔直径d比值在1~3范围内，数在比值为2.5左右达到最大值;射流高度H与射流孔直径d比值在5左右时，数趋于最大。

Jet cooling is one of effective ways to transfer the great flux density heat,and the heat sink shape of jet impingement is a key point affecting heat transfer. The new cone heat sink proposed is numerically simulated by using RNGk-ε turbulence model under the condition of jet impingement through a single spray nozzle and the result is verified by experiments. The result indicates that the cooling effect of heat sink with a single cone is better than that of usual flat plate heat sink,and when compared with the latter,the former has an additional transition region where is a secondary impingement which strengthens the heat transfer. The greater theRe number becomes,the better effect of the cone heat sink will be; the numerical simulation about different cone angle (15°-60°) of heat sinks shows that 45° cone angle of heat sink provides a higher value of number than the others; whend₁ (diameter and conical bottom) /d (jet diameter) is 1-3,and whend₁/d is about 2.5,it gets a higher value of number compared to the others; whenH (height of the jet) /d is 5,nothing about the cooling effect of heat sink is so good as thatH/d is about 5.