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INNOVATIVE THERMOFLUIDS EXPERIMENTS FOR MODERN MECHANICAL ENGINEERING EDUCATION

机译:现代机械工程教育的创新热流实验

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One of the primary objectives of the Petroleum Institute (PI) is to prepare future mechanical engineers to assume successful career paths in the oil and gas industry. Hands-on laboratory skills play a vital role in providing students with a sound understanding of the scientific fundamentals and their application in solving real-life engineering problems. The Institute's undergraduate mechanical engineering curriculum incorporates a one-semester junior level course titled Core Measurements, which is taught in a state-of-the-art measurement laboratory. This course includes two innovative hands-on experiments related to experimental heat transfer and fluid dynamics, with the objective of familiarizing the students, through simple projects, with the characterization of fundamental thermofluid phenomena. Each hands-on project consists of design, fabrication, data acquisition and validation of a simple experiment, with a formal report submitted on completion. Each project is undertaken by groups of four students over a five-week period.The first experiment characterizes conductive heat spread within a heat-source-substrate assembly representative of electronics cooling applications. The effects of heat source foot print, substrate geometry and thermal conductivity, and convective cooling conditions are investigated. The temperature distribution on the source and substrate surfaces are measured using thermocouples and infrared thermography, with substrate thermal resistance calculated and compared with analytical solutions.The second experiment aims to enhance student's learning of internal pipe flows. Single phase flows in a pipe network are characterized for different flow regimes. The pipe network consists of different diameter lines with valves for regulating and directing the flow to make up various series and parallel piping combinations. The relation between head loss due to fluid friction and velocity, pressure drop empirical laws, valve characteristics, and loss coefficient of fittings are investigated using various pressure and flow measuring techniques, including laser Doppler velocimetry (LDV).The paper documents the experiments and the teaching strategy employed to integrate fundamental theories with hands-on experiences. Sample measurement and analysis results are reported. The effectiveness of the proposed experiments in enhancing student learning of thermofluids, engineering analysis of discrepancies between predictions and measurements, and project management skills is highlighted.
机译:石油学院(PI)的主要目标之一是为未来的机械工程师做好准备,以承担石油和天然气行业成功的职业道路。动手实验室技能在为学生提供对科学基础及其在解决实际工程问题中的应用的良好理解方面起着至关重要的作用。该研究所的机械工程专业课程包括一门为期一学期的初级课程,名为“核心测量”,该课程在最先进的测量实验室中教授。本课程包括两个与实验传热和流体动力学有关的创新动手实验,目的是通过简单的项目使学生熟悉基本的热流体现象的特征。每个动手项目都包括一个简单实验的设计,制造,数据获取和验证,并在完成时提交正式报告。每个项目由四名学生组成的小组在五周的时间内进行。 第一个实验表征了代表电子冷却应用的热源-基板组件内的传导热扩散。研究了热源足迹,基底几何形状和导热率以及对流冷却条件的影响。使用热电偶和红外热像仪测量源和基板表面上的温度分布,并计算基板的热阻并将其与分析溶液进行比较。 第二个实验旨在增强学生对内部管道流动的学习。管网中的单相流具有不同的流态。管网由直径不同的管线和阀门组成,这些管线用于调节和引导流量,以构成各种串联和并联管道组合。使用包括激光多普勒测速仪(LDV)在内的各种压力和流量测量技术,研究了由于流体摩擦而造成的压头损失与速度,压力降的经验规律,阀门特性以及配件的损耗系数之间的关系。 本文记录了将基础理论与实践经验相结合的实验和教学策略。报告样品测量和分析结果。强调了所提出的实验在增强学生对热流体的学习,对预测和测量之间的差异进行工程分析以及项目管理技能方面的有效性。

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