کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8050773 1519360 2017 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Análisis de los efectos del aire atrapado en transitorios hidráulicos en acueductos a bombeo
ترجمه فارسی عنوان
تأثیر تأثیرات هوا که در گذرهای هیدرولیکی در حوضچه های پمپاژ به دام افتاده است
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
چکیده انگلیسی
This paper presents an analysis of the potential effects on pressure transients of air entrained at the downstream end of entrapped air pockets followed by a hydraulic jump in pressurized pipelines. For this purpose, a methodology is followed to identify the potential locations, where air pockets can be found along the pipeline, to compute the air-void fraction downstream of the air pockets and the volume of the pockets, respectively. Further, the calculations were carried out using a numerical model based on the methods of characteristics and the Lax-Wendroff. A case study of an existing pumping system was considered to validate the methodology proposed. The results show that small air pockets cause an important enhancement of the maximum pressures throughout the pipeline profile, conversely pressure transients are significantly reduced with increasing air-pocket volumes and bubbly flow air content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería - Volume 33, Issues 1–2, January–June 2017, Pages 79-89
نویسندگان
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