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首页> 外文会议>The 2001 ASME International Mechanical Engineering Congress and Exposition, 2001, Nov 11-16, 2001, New York, New York >SMALL DIAMETER EFFECTS ON INTERNAL FLOW BOILING
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SMALL DIAMETER EFFECTS ON INTERNAL FLOW BOILING

机译：小直径对内部流动沸腾的影响

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摘要

Since the 1950's, the research and industrial communities have developed a body of experimental data and set of analytical tools and correlations for two-phase flow and heat transfer in passages having hydraulic diameter greater than 6 mm or so. These tools include flow regime maps, pressure drop and heat transfer correlations, and critical heat flux limits, as well as strategies for robust thermal management of HVAC systems, electronics, and nuclear power plants. Designers of small systems with thermal management by phase change will need analogous tools to predict and optimize thermal behavior in the mesoscale and smaller sizes. Such systems include a wide range of devices for computation, measurement, and actuation in environments that range from office space to outer space and living systems. This paper examines important proceses that must be considered when channel diameters decrease, including flow distribution issues in single, parallel, and split flows; flow instability in parallel passages; manufacturing tolerances effects; nucleation processes; and wall conductance effects. The discussion focuses on engineering issues for the design of practical systems.
机译：自1950年代以来，研究和工业界已经开发出了大量的实验数据和分析工具集，以及用于水力直径大于6毫米左右的通道中的两相流和热传递的相关性。这些工具包括流动状态图，压降和热传递相关性以及临界热通量限制，以及用于HVAC系统，电子设备和核电站的稳健热管理策略。具有通过相变进行热管理的小型系统的设计人员将需要类似的工具来预测和优化中尺度和较小尺寸的热行为。这样的系统包括各种各样的设备，用于在从办公空间到外层空间和生活系统的环境中进行计算，测量和驱动。本文研究了通道直径减小时必须考虑的重要过程，包括单，并联和分流中的流量分配问题。平行通道中的流动不稳定性；制造公差效应；成核过程；和壁电导效应。讨论的重点是用于实际系统设计的工程问题。

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