کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6753847 1430816 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analytical solution and numerical study on water hammer in a pipeline closed with an elastically attached valve
ترجمه فارسی عنوان
راه حل تحلیلی و مطالعه عددی بر روی چکش آب در یک خط لوله بسته با یک دریچه الاستیک متصل شده است
کلمات کلیدی
چکش آب، تعامل مایع مایع، اتصال جابجایی، کاهش فشار، محرک لرزش، روشهای عددی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The influence of dynamic fluid-structure interaction (FSI) onto the course of water hammer (WH) can be significant in non-rigid pipeline systems. The essence of this effect is the dynamic transfer of liquid energy to the pipeline structure and back, which is important for elastic structures and can be negligible for rigid ones. In the paper a special model of such behavior is analyzed. A straight pipeline with a steady flow, fixed to the floor with several rigid supports is assumed. The transient is generated by a quickly closed valve installed at the end of the pipeline. FSI effects are assumed to be present mainly at the valve which is fixed with a spring dash-pot attachment. Analysis of WH runs, especially transient pressure changes, for various stiffness and damping parameters of the spring dash-pot valve attachment is presented in the paper. The solutions are found analytically and numerically. Numerical results have been computed with the use of an own computer program developed on the basis of the four equation model of WH-FSI and the specific boundary conditions formulated at the valve. Analytical solutions have been found with the separation of variables method for slightly simplified assumptions. Damping at the dash-pot is taken into account within the numerical study. The influence of valve attachment parameters onto the WH courses was discovered and it was found the transient amplitudes can be reduced. Such a system, elastically attached shut-off valve in a pipeline or other, equivalent design can be a real solution applicable in practice.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 417, 17 March 2018, Pages 245-259
نویسندگان
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