| مشخصات مقاله | |
| ترجمه عنوان مقاله | بررسی تجربی کاهندگی نیروی درگ با اضافه کردن پلیمرها در جریان دوفازی اسلاگ نفت خام و هوا در لوله‌های افقی |
| عنوان انگلیسی مقاله | Experimental study of drag reduction by a polymeric additive in slug two-phase flow of crude oil and air in horizontal pipes |
| انتشار | مقاله سال 2006 |
| تعداد صفحات مقاله انگلیسی | 6 صفحه |
| هزینه | دانلود مقاله انگلیسی رایگان میباشد. |
| پایگاه داده | نشریه الزویر |
| نوع نگارش مقاله |
مقاله پژوهشی (Research article) |
| مقاله بیس | این مقاله بیس نمیباشد |
| نمایه (index) | scopus – master journals – JCR |
| نوع مقاله | ISI |
| فرمت مقاله انگلیسی | |
| ایمپکت فاکتور(IF) |
3.306 در سال 2017 |
| شاخص H_index | 155 در سال 2018 |
| شاخص SJR | 1.043 در سال 2018 |
| رشته های مرتبط | مهندسی نفت، شیمی |
| گرایش های مرتبط | مهندسی حفاری |
| نوع ارائه مقاله |
ژورنال |
| مجله / کنفرانس | علوم مهندسی شیمی – Chemical Engineering Science |
| دانشگاه | Chemical and Petroleum Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran |
| کلمات کلیدی | جریان چندفازی، سیالات غیرنیوتنی، پلیمر، کاهندگی نیروی درگ، جریان اسلاگ، مکانیک سیالات |
| کلمات کلیدی انگلیسی | Multiphase flow, Non-Newtonian fluids, Polymer, Drag reduction, Slug flow, Fluid mechanics |
| شناسه دیجیتال – doi |
https://doi.org/10.1016/j.ces.2005.09.006 |
| کد محصول | E11611 |
| وضعیت ترجمه مقاله | ترجمه آماده این مقاله موجود نمیباشد. میتوانید از طریق دکمه پایین سفارش دهید. |
| دانلود رایگان مقاله | دانلود رایگان مقاله انگلیسی |
| سفارش ترجمه این مقاله | سفارش ترجمه این مقاله |
| فهرست مطالب مقاله: |
| Outline Abstract Keywords 1. Introduction 2. Definition of the drag reduction 3. Drag reducing agents 4. Experimental procedure 5. Results and discussion Notation Acknowledgements References |
| بخشی از متن مقاله: |
| Abstract In this study the effect of the presence of a drag reducing agent (DRA) on the pressure drop in cocurrent horizontal pipes carrying slug two-phase flow of air and crude oil is investigated. An experimental set-up is erected. The test section of the experimental set-up is consisted of: a smooth pipe of polycarbonate with 10.3 m long and 2.54 cm ID, a rough pipe of galvanized iron with 8.8 m long and 2.54 cm ID and a rough pipe of galvanized iron with 8.8 m long and 1.27 cm ID. The employing DRA is a Polyalpha-olefin (Polyisobutylene). The percent drag reduction (%DR) is calculated using the obtained experimental data, in presence of the DRA. The results show that addition of DRA could be effective up to some doses of DRA after which the pressure drop is kept constant. A %DR of about 40 is obtained for some experimental conditions.Introduction It has been known since the late 1940s (Toms, 1948) that the addition of small concentrations of high molecular weight polymer to water or other solvent can produce large reductions in frictional pressure drop for turbulent flows past a surface, leading to the possibility of increased pipeline capacities and faster ships. Two-phase gas–liquid flow is frequently encountered in many industrial units such as distillation columns, pipelines, boiler tubes, condensers, evaporators, and chemical reactors. Offshore production has necessitated transportation of both gas and liquid phases over long distances before separation. This type of flow has many unique features, which must be evaluated in each situation. However, one phenomenon which is nearly always undesirable is the high axial pressure gradient, resulting substantial energy consumption per unit volume of liquid throughput. It can be seen from the literature survey that although some studies have been done on drag reduction by polymer solution in single phase flow, but a few attempts have been made to study the effect of polymer solutions in reducing the high axial pressure drop in two-phase flow. Experimental evidences show that the polymer increases the thickness of the viscous sub layer and the transition zone. The mechanism of this boundary layer effect is not yet fully understood, but supporting experimental evidences have been given by Fortuna and Hanratty (1971), Rudd (1971), Kumor and Sylvester (1972) and Astria (1969). |