کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
708230 891956 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinearities in ultrasonic flow measurement
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Nonlinearities in ultrasonic flow measurement
چکیده انگلیسی

The governing equations of flow acoustics including nonlinearities are solved and analyzed in terms of ultrasonic flow-measurement properties. The effect of nonlinearities for sound propagation is expected to be most significant for gas-flow measurement applications as gas-sound speeds are much smaller while fluid flows generally are much higher in the corresponding case of liquid-flow measurement applications. The equation framework is applied to the case of a sinusoidal ultrasound transducer speed excitation at one location and detected by a receiver at another location. Flowmeter errors due to nonlinearities are highlighted in this work based on the well-known transit-time reciprocal transducer system setup. It is found that accounting for nonlinear effects leads to, for a given flowmeter configuration and in a large flow range, an almost constant error which can be calibrated out in applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flow Measurement and Instrumentation - Volume 19, Issue 2, April 2008, Pages 79–84
نویسندگان
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