【作者】 孙中原；

【导师】 宋保银；

【作者基本信息】 南京航空航天大学 ， 人机与环境工程， 2006， 硕士

【摘要】 微小型槽道平板热管因其在微电子设备冷却领域的广泛而又重要的应用前景,已经越来越受到研究人员的重视。国外对该种热管的研究已经取得了一些开创性的成果,但是相关研究在我国还较缺乏,处于起步阶段。本文在大量查阅现有国内外文献的基础上,总结并综合前人有关微槽平板热管理论研究方面的成果,对单面刻有槽道的微槽平板热管进行了较为深入和细致的研究。本文的研究共分两大部分,其中第一部分考察了该型热管的整体工作表现,通过建立数学模型和开发相应的计算程序,得到了热管内部毛细流动和传热的数据,分析了热管在不同工作倾角、不同加热热流以及不同工作温度等情况下工作特性的变化规律,考察了汽液界面上的剪切作用对热管传热量的影响,并且进一步在理论上预测了该型热管的毛细和沸腾极限。本文第二部分在前一部分研究的基础上对微细槽道内形成的液体弯月面尤其是蒸发薄液膜部分的蒸发换热进行了研究。通过参考前人研究成果,建立起相关数学模型,得到了汽液弯月面在薄液膜区域的流动和换热规律,分析了槽道宽度等参量对微区域传热的影响,并计算得到了微区域传热量占整个液体弯月面的份额。最后,本文总结归纳了研究得到的该型微槽平板热管传热特性,为今后的工程设计、应用和优化提供一定的理论支持,并对该型热管今后的进一步深入研究提出了展望。更多还原

【Abstract】 Flat miniature grooved heat pipe(FMGHP) has attracted increasing attention from researchers for its prospect on cooling the micro-electronic elements.Some creative works have been done by foreign researchers,but it is still lack of relevent research in our country。This paper studies the FMGHP with grooves in one side of the plate in a detailed way based on the theoretic works made by the former researchers.This paper is consisted of two major parts:one deals with the general working performance of the FMGHP by setting up mathematic model and developing computer procedure,getting the datum related to the capillary flow and heat transfer, analysing the working characteristics of FMGHP in different working temperature,heat flux and inclination angle etc.In this part,the prediction of capillary and boiling limit are also included.The other major part studies the flow and heat transfer characteristics in the micro-film region formed by the meniscus attached on the metalic fin in the micro rectangular groove.Investigations on the influence of width of groove and other factors on heat transfer in this region have been made.The importance of this micro-region in the heat transfer of the entire heat pipe has been unveiled.The heat transfer characteristics gotten by this research could be used in design and application and also optimization of this kind of FMGHP.更多还原