Transition of thermal boundary layers on heated flat and curved surfaces

加热平面和曲面上热边界层的转变

• 批准号: DP170104023
• 负责人: Prof Chengwang Lei
• 金额: $ 23.17万
• 依托单位: The University of Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-02-17 至 2020-06-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP170104023
• 关键词: Transition; thermal; boundary; layers; heated

This project aims to study the laminar to turbulent transition of the thermal boundary layer (TBL). The state of the TBL determines the heat transfer rate and energy efficiency of natural convection heat exchangers and heat dissipation systems. The intended outcome is to understand the TBL’s transitional behaviour and develop effective strategies for stimulating TBL transition to enhance heat transfer. This project will develop a high-resolution, low-cost and easy-to-implement three-dimensional volumetric flow measurement technique based on stereoscopic shadowgraph and use it to study the TBL transition. This technique should provide a powerful tool for fluid mechanics and heat transfer research.

本计画旨在研究热边界层由层流到紊流的转捩。TBL的状态决定了自然对流热交换器和散热系统的传热速率和能量效率。预期的结果是了解TBL的过渡行为，并制定有效的策略，刺激TBL过渡，以提高传热。该项目将开发一种基于立体阴影法的高分辨率、低成本、易于实现的三维体积流量测量技术，并用于研究TBL转变。该技术将为流体力学和传热学研究提供有力的工具。