利用 CFD 仿真开发三杯式风速计校准器

IF 1 4区 工程技术 Q4 INSTRUMENTS & INSTRUMENTATION MAPAN Pub Date : 2024-08-22 DOI:10.1007/s12647-024-00766-x
Shi Qiu, Guanglu Han, Siyu Liu, Xinqing Wang, Xi Chen, Songkui Li
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引用次数: 0

摘要

作为广泛应用于近地面风速测量的普通传感器,三杯式风速计在环境观测中可能会逐渐测不到风速值的启动阈值(0.3 m/s ~ 1.0 m/s)。如果指示值异常,则应进行额外的室外校准。本文旨在对现场校准器模型的关键因素进行数值分析。本文研究了三杯式风速计的测量误差资源和启动阈值计算。此外,还建立了四种校准器模型。基于可实现的 k-epsilon 模型,分析了不同校准器模型的流线和流偏角。模型中有一个风扇组和九个风扇组,气流垂直于指定平面。作为实际现场校准中的一个校准组件,在进气口安装蜂巢滤网可显著改变一个风机模型的气流方向。蜂巢滤网还可以将九个风机组模型的气流偏差角度改变到可接受的范围内。为了满足风速校准规定的要求,带有九风机组和蜂巢滤网的机型最符合现场条件。三杯式风速计的每个启动阈值都有相应的风机压力跳变,间隔合理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Development of Three-Cup Anemometer Calibrator Using CFD Simulation

As a common sensor widely used in near-surface wind speed measurement, the three-cup anemometer may gradually fail to measure the start-up threshold of wind speed value (0.3 m/s ~ 1.0 m/s) in environmental observation. If the indicates value is abnormal, additional outdoor calibration should be performed. The aim of this paper is to provide a numerical analysis of the key factors for field calibrator models. The resource of measurement error and the calculation of start-up thresholds for three-cup anemometers are investigated. In addition, four types of calibrator models are built. Based on the realizable k-epsilon model, the streamline and flow deviation angle of different calibrator models are analyzed. One fan set and nine fan sets are available in the model with airflow perpendicular to the specified plane. As a calibration component in the actual field calibration, the installation of a honeycomb screen at the inlet can dramatically change the airflow direction of one fan model. The honeycomb screen can also change the airflow deviation angle of a nine-fan group model to an acceptable range. In order to meet the requirements of the wind speed calibration regulation, a model with nine-fan group and a honeycomb screen best meet the field conditions. Each start-up threshold of the three-cup anemometer has a corresponding fan pressure jump at reasonable intervals.

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来源期刊
MAPAN
MAPAN 工程技术-物理:应用
CiteScore
2.30
自引率
20.00%
发文量
91
审稿时长
3 months
期刊介绍: MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology. The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.
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