کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
738322 | 893999 | 2007 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Characteristics of on-wall in-tube flexible thermal flow sensor under radially asymmetric flow condition Characteristics of on-wall in-tube flexible thermal flow sensor under radially asymmetric flow condition](/preview/png/738322.png)
We investigated the ability of an on-wall in-tube flexible thermal flow sensor to measure the flow rate under a radially asymmetric flow condition in a curved tube. The sensor was fabricated on a polyimide film substrate using polymer MEMS technologies. A ring-shaped sensing structure was formed by mounting the sensor on the inner-wall surface of a straight tube that follows a curved tube. The sensor characteristics were experimentally evaluated by varying the distance L from the end of the curved tube, the curvature angle θ, and the curvature radius r of the curved tube. The output signals from the sensor were the same when the distance L was over 5 mm at various curvature angles and curvature radiuses. The sensor is thus well suited for measuring the flow rate in spiral tubes.
Journal: Sensors and Actuators A: Physical - Volume 138, Issue 1, 20 July 2007, Pages 87–96