کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1754963 1522817 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comment on “Gene expression programming analysis of implicit Colebrook–White equation in turbulent flow friction factor calculation”
ترجمه فارسی عنوان
اظهار نظر در مورد تجزیه و تحلیل برنامه نویسی ژن بیان معادله کولبروکا ضمنی در محاسبات اصطکاک جاری جریان
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی


• Unknown friction factor, f, in the Colebrook's equation is given implicitly.
• Using an accurate solution method is essential to the parameter estimation.
• Two accurate explicit approximations for flow friction factor are obtained.
• The maximum relative error of new approximations are less than 0.022% and 0.008%.

Recently, it is investigated (Samadianfard, 2012) the potential of genetic programming based technique in estimating flow friction factor in comparison with the most currently available explicit alternatives to the Colebrook's equation.Using iterative solution of the Colebrook's equation which is accurate to six significant digits, this discussion showed that the proposed approximation by the author for friction factor is not very accurate (the errors increase up to 7.374%), thus it is proposed two new accurate approximations (with maximum error less than 0.022% and 0.008%) for estimating flow friction factor.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Petroleum Science and Engineering - Volume 124, December 2014, Pages 402–405
نویسندگان
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