کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
658674 1458089 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Accuracy of tracer stimulus response experiments in laminar flows
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Accuracy of tracer stimulus response experiments in laminar flows
چکیده انگلیسی

Experimental identification of the residence time distribution (RTD) characteristics for steady (or pulsatile) flows using a stimulus response technique, for example using tracers, is very demanding. It is especially demanding in the case of laminar and convection-dominated flows characterized by highly nonuniform velocity and transversal distribution of the tracer. The accuracy of the RTD characteristics depends on the precise distribution of the injected tracer (salt or a radioisotope) via the injection modulus, and also on appropriate design of the detector (conductivity probe). The performance of various modifications of the injection modulus and of the conductivity probe is assessed using the simplest possible system – a straight pipe and fully developed laminar flow. This comparison is made via the deviation of the experimental values for the time of the first appearance and the mean residence time from their theoretical values. We find the optimal configuration of the injection modulus and the conductivity probe for laminar and convection-dominated flow in a straight rigid pipe.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 55, Issues 23–24, November 2012, Pages 6458–6462
نویسندگان
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