Numerical Investigation of Flow Field and Cooling Enhancement in Electronic Chip Configurations

电子芯片配置中流场和冷却增强的数值研究

• 批准号: 8908808
• 负责人: Cristina Amon
• 金额: $ 6万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-09-01 至 1992-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8908808&HistoricalAwards=false
• 关键词: Numerical; Investigation; Flow; Field; Cooling

The objective of the proposed research is the direct numerical simulation of heat transfer enhancement by resonant excitation of Tollmien-Schlichting instabilities in flows such as those encountered in air cooling of electronic equipment. The resonant excitation will be achieved by imposing an external excitation at a frequency equal to the most unstable flow frequency, and by spontaneously supercritical destabilization of the flow. The proposed research will address the issues of buoyancy and three-dimensionality which are present in electronic cooling configurations. In order to understand and quantify the physics of supercritical and resonant heat transfer enhancement, it is proposed to develop an efficient hydrodynamic-heat transfer numerical code based on the direct simulation of the unaveraged three-dimensional energy and Navier-Stokes equations using a spectral element-Fourier method. The numerical results from direct simulations will permit to validate and further develop heat transfer models, since computational modeling is still a fundamental tool of analysis in engineering practice.

拟议的研究的目的是通过在电子设备的空气冷却中遇到的诸如流量的Tollmien-Schlichting Imbinsibisitions的共振激发来直接模拟传热增强的数值模拟。 通过以等于最不稳定的流量频率以及自发的超临界不稳定的频率，将外部激发施加到流动的频率等频率，从而实现共振激发。 拟议的研究将解决电子冷却配置中存在的浮力和三维的问题。 为了理解和量化超临界和谐振传热增强的物理学，提议使用频谱元素方法来基于对未支配的三维能量和Navier-Stokes方程的直接模拟来开发有效的流体动力传递数值代码。 直接模拟的数值结果将允许验证并进一步开发传热模型，因为计算建模仍然是工程实践中分析的基本工具。