气流速度测量实验的设备升级与课程改革

Equipment Upgrade and Curriculum Reform for the Airflow Velocity Measurement Experiment

  • 摘要: 为提升工程测试技术实验课程中气流速度测量实验的教学质量,该文研制了一套矢量速度探针测量模块,在传统实验教学内容的基础上,开发了三维矢量风速测量教学项目。该模块由五孔速度探针、高精度角度微调滑台、支撑结构件及数显压差计等构成,可通过预设俯仰角精确模拟矢量风速场。实验采用“半对向法”测量技术,实时获取气流速度的大小和方向信息,并与预设参数进行比对。教学实践表明,该模块能够准确反映气流矢量速度的动态特征及其变化规律,满足实验教学要求。课程以“基础—进阶—高级”递进形式开展,有效加深了学生对矢量流速概念的理解,提升了学生的工程测量实践能力。

     

    Abstract: To enhance the teaching quality of the airflow velocity measurement experiment in the engineering testing technology experiment course, this paper develops a vector velocity probe measurement module. Building upon traditional experimental teaching content, a three-dimensional vector wind speed measurement teaching project is developed. The module consists of a five-hole velocity probe, a high-precision angle-adjustment slide stage, supporting structural components, and a digital differential pressure gauge. It can accurately simulate vector wind speed fields by presetting pitch angles. The experiment employs the “semi-nulling method” measurement technique to acquire real-time information on airflow velocity magnitude and direction, which is then compared with preset parameters. Teaching practice demonstrates that this module can accurately reflect the dynamic characteristics and variation patterns of airflow vector velocity, meeting the requirements of experimental teaching. The course is conducted in a “fundamental-advanced-senior” progressive format, effectively deepening students’ understanding of vector velocity concepts and enhancing their practical skills in engineering measurement.

     

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