中文摘要：

本文采用数值模拟研究了同心圆柱环隙内的泰勒涡流,利用PIV实验结果验证了模拟结果的可靠性。为掌握沟槽尺寸对环隙内流场及其传热过程的影响规律,本文研究了四种不同深宽比模型内的流场及温度场分布,通过对比不同模型的计算结果,获得如下结论：环隙间存在恒定温度梯度时,随着深宽比增加,泰勒涡轴向尺寸逐渐增加;深宽比影响了环隙内流体的径向速度分布,当深宽比为0.75时流体的径向速度最大;深宽比为0.75时内圆柱壁面热流密度最大,当深宽比大于0.75并继续增加时,环隙内流体的传热性能并没有得到明显加强。综上所述,本文所研究的4种不同深宽比的模型中,深宽比为0.75的模型具有最优的传热效果,沟槽深度在一定范围内能够强化流体与壁面之间的对流换热。

英文摘要：

The Taylor vortex flow in the annulus gap was studied by numerical simulation,the reliability of the calculation result was verified by PIV experiment.To study the slit dimensions effect on the flow field and its heat transfer process,four models with different aspect ratio was considered.By comparing the result in different models,the following conclusion is obtained：the axial size of Taylor vortex increases with the increasing of slit depth at constant temperature gradient condition.The slit depth affects the radial velocity of Taylor vortex,and the fluid radial velocity in model with 0.75 aspect ratio was found has the maximum value among four models.The heat flux of the model with 0.75 aspect ratio was found has a maximum heat flux.When the aspect ratio is larger than 0.75,the heat transfer ability of the fluid was not strengthened obviously as the further increasing of slit depth.Among four different models in this study,the model with 0.75 aspect ratio has the best heat transfer ability,and the heat exchange between fluid and wall can be strengthened as the increasing of the slit depth in a certain range.