کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7113981 | 1461079 | 2018 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the estimation of free-surface turbulence using ultrasonic sensors
ترجمه فارسی عنوان
برآورد آشفتگی سطح آزاد با استفاده از سنسورهای اولتراسونیک
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کلمات کلیدی
متر جابجایی آکوستیک، دینامیک سطح آزاد، موج، طیف توان، جریان آب هوا، سرریز گشتاور،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
Accurate determination of free-surface dynamics has attracted much research attention during the past decade and has important applications in many environmental and water related areas. In this study, the free-surface dynamics in several turbulent flows commonly found in nature were investigated using a synchronised setup consisting of an ultrasonic sensor and a high-speed video camera. Basic sensor capabilities were examined in dry conditions to allow for a better characterisation of the present sensor model. The ultrasonic sensor was found to adequately reproduce free-surface dynamics up to the second order, especially in two-dimensional scenarios with the most energetic modes in the low frequency range. The sensor frequency response was satisfactory in the sub-20â¯Hz band, and its signal quality may be further improved by low-pass filtering prior to digitisation. The application of the USS to characterise entrapped air in high-velocity flows is also discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flow Measurement and Instrumentation - Volume 60, April 2018, Pages 171-184
Journal: Flow Measurement and Instrumentation - Volume 60, April 2018, Pages 171-184
نویسندگان
G. Zhang, D. Valero, D.B. Bung, H. Chanson,