Finite Element Modeling and Validation of the Behaviour and Performance of a Novel Thermal Measuring Sensor

新型热测量传感器的行为和性能的有限元建模和验证

• 批准号: 521155-2017
• 负责人: Groulx, Dominic
• 金额: $ 1.82万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639277
• 关键词: Finite; Element; Modeling; Validation; Behaviour

Thermal properties of materials, thermal conductivity chief among them, are essential values needed byengineers and scientists when designing thermal systems, understanding thermal behaviour and developingnovel thermal technologies. C-Therm, a Canadian company, is a world-leader in the design of thermal propertycharacterization systems, i.e., systems that measure thermal conductivities and other thermal properties ofmaterials. Such a measurement is far from trivial since a thermal experiment needs to be performed every timea measurement is made and analysed after the fact using advanced heat conduction science to extract theproperty values. In other word, those properties are not measured directly, they are inferred from the results ofa very accurate test, accurate data and complex mathematical understanding of what heat transfer is.C-Them is working to improve their technology in order to remain at the forefront of their industry by movingtowards a methodology that will greatly reduce the amount of calibration require and will provide results basedstrictly on first principles. The challenge being to still offer results fast out of their systems (completesimulation of the thermal process could take minutes to hours to obtain, while their client expect results inseconds). The goal of this research project is to assist C-Therm in the development of this novel methodologyby numerically studying the behaviour of their sensor and the various samples C-Therm is intended to apply itto (thin films, vacuum insulation panels, etc). Using advanced numerical simulations, the complete heattransfer rates and temperature fields in the overall system can be obtained and studied to extract the mostimportant feature of the heat transfer process and gain a greater understanding of the impact of the variousparameters that can be varied in the experiment (related to physical dimensions and layout of the sensor and theoverall operation of it: heat flow, temperature). Those results are also of prime importance to C-Therm as itwill serve to validate the analytical methodology they are developing in house.

材料的热性能（其中最主要的是热导率）是工程师和科学家在设计热系统、了解热行为和开发新型热技术时所需的基本值。 C-Therm 是一家加拿大公司，在热性能表征系统（即测量材料的热导率和其他热性能的系统）设计方面处于世界领先地位。这种测量绝非易事，因为每次测量时都需要进行热实验，并在事后使用先进的热传导科学进行分析以提取性能值。换句话说，这些属性不是直接测量的，而是通过非常精确的测试、准确的数据和对传热的复杂数学理解的结果推断出来的。C-Them 正在努力改进其技术，以便通过采用一种方法来保持在行业的前沿，该方法将大大减少校准需求，并严格基于第一原理提供结果。面临的挑战是仍然从他们的系统中快速提供结果（热处理过程的完整模拟可能需要几分钟到几小时才能获得，而他们的客户期望在几秒钟内得到结果）。该研究项目的目标是通过数值研究传感器的行为以及 C-Therm 打算将其应用到的各种样品（薄膜、真空隔热板等）来协助 C-Therm 开发这种新颖的方法。使用先进的数值模拟，可以获得并研究整个系统中完整的传热速率和温度场，以提取传热过程最重要的特征，并更好地了解实验中可能变化的各种参数的影响（与传感器的物理尺寸和布局及其整体操作相​​关：热流、温度）。这些结果对 C-Therm 也至关重要，因为它将有助于验证他们正在内部开发的分析方法。