Drag reduction in turbulent flow of a Newtonian liquid using calcium carbonate/water nanofluid through horizontal pipes
محل انتشار: چهاردهمین همایش پژوهش های نوین در علوم و فناوری
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 458
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شناسه ملی سند علمی:
EMAA14_033
تاریخ نمایه سازی: 31 اردیبهشت 1398
چکیده مقاله:
A new type of aqueous drag-reducing fluid with CaCO3 nanoparticles was developed. The new working fluid was an aqueous solution with CaCO3 nanoparticles added and has special effects of drag-reducing in pipelines. An experimental apparatus was set up. The test section of the apparatus consisted of a smooth carbonate pipe and four galvanized iron pipes with the same length (4 m). Experiments were done to study the drag and pressure reduction in turbulent flow of a relatively new category of drag-reducing fluids which are names as nanofluids, in five different horizontal pipes with 1/4-1 diameters and 6 length. Results indicated that there were obvious differences of the drag-reducing and pressure drop characteristics between conventional Newtonian liquid (water) and new drag-reducing nanofluid. In addition, drag reduction in rough pipes was more than that in smooth ones at the same Reynolds number and it improved, as the relative roughness increased
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نویسندگان
Akbar Darvishi
Department of Petroleum Engineering, Firoozabad Branch, Islamic Azad University, Firoozabad, Iran