基于气流速度测量模型,运用流体动力学的知识,建立了在连续流流态下的引气管路的动态响应模型,推导了引气管路的传递函数。通过传递函数,分析了引气管路的动态特性,提出了引气管路的设计准则,并通过Fluent流体实验验证了引气管路的动态响应模型和设计准则。
Abstract
As an important part of the flush air-data sensing (FADS) system, the pneumatic tube has an important influence on the reliability and measurement accuracy of the system. In this paper, the knowledge of fluid dynamics is used to build the dynamic response model of pneumatic tube in the continue flow and the transfer function is deduced. Through the transfer function, the dynamic characteristic of the pneumatic tube has been analysised, furthermore, the design criteria for the pneumatic tube has been formulated. Finally, the simulation results have been showed to prove the dynamic response model and the design criteria of the pneumatic tube, thus providing reference to the design of the FADS system.
关键词
计量学 /
气流速度测量 /
引气管路 /
动态响应模型 /
Fluent
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基金
国家自然科学基金 (61172126); 吉林省自然科学基金 (20140101073JC)
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