کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
651293 1457414 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of geometry on the efficiency of convergent–divergent nozzles applied to Tesla turbines
ترجمه فارسی عنوان
تأثیر هندسه بر کارایی نازل های متقاطع همگرا که به توربین های تسلا اعمال می شود
کلمات کلیدی
تورل تورل، جریان فوق العاده ای روش مشخصات نازل متقابل-واگرا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• CD nozzles with rectangular geometry at throat were investigated for application in Tesla turbines.
• Internal flux in divergent section of planar nozzles was overexpanded with asymmetric separation.
• At nozzles with divergent section circular the shock waves were canceled.
• CD nozzles are an alternative to increase overall yield of Tesla turbines.

Convergent–divergent (CD) nozzles were designed and manufactured to improve the injection efficiency of the working fluid in Tesla turbines. Ten nozzles have been designed using two different techniques: a one-dimensional approach and a two-dimensional approach with the method of characteristics. All nozzles had rectangular geometry at throat, while 3 had divergent section planar and 2 divergent section circular, considering each mass flow rate (55 and 70 kg h−1). Nozzles were analyzed using air as the working fluid. A nozzle exit to throat area ratio (NAR) of 1.35 was used in all nozzles, while the nozzle pressure ratios (NPR) ranged between 2.15 and 3.25. At planar nozzles an (x/H)exit of 2.1 was more suitable for decreased of total pressure losses, while at circular nozzles the shock waves were canceled inside of divergent section.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 62, April 2015, Pages 131–140
نویسندگان
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