ارزیابی منحنی‌های مشخصۀ توربین فراصوت در پذیرش جزئی در آزمایشگاه توربین گاز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه آزاد اسلامی واحد علوم و تحقیقات

2 صنعتی امیرکبیر

چکیده

در این مقاله، ابتدا دلایل استفاده از فن پذیرش جزئی در توربین‌های فراصوت تشریح شده است. سپس، خلاصه‌ای از فرآیند طراحی آزمایشگاه توربین‌های فراصوت به‌منظور تولید منحنی مشخصۀ توربین، ارائه شده است. محاسبات مربوط به روش هم‌سانی گازدینامیکی، تشریح شده و استانداردهای مربوط به نحوۀ نصب و بهره‌برداری از سامانه‌های اندازه‌گیری در آزمایشگاه معرفی شده‌اند. منحنی مشخصه‌های به‌دست آمده در این آزمایشگاه با نتایج کد پیش‌بینی عملکرد توربین و نتایج کار دیگران مقایسه شده است. باتوجه به صحه‌گذاری کد پیش‌بینی عملکرد با نتایج آزمایش توربین در شرایط واقعی، نتایج حاصل از آزمایش توربین در شرایط هم‌سانی نتایج قابل قبولی هستند. هم‌چنین، راندمان توربین در شرایط پذیرش جزئی دست‌کم 20 واحد کم‌تر از شرایط پذیرش کامل است.

کلیدواژه‌ها


عنوان مقاله [English]

Experimental Evaluation of Supersonic Turbine Characteristic Curve at Full and Partial Admission in Turbine Test Rig

نویسندگان [English]

  • Reza Aghaei togh 1
  • Abolghasem Mesgarpoor Tousi 2
1 Science and Research Branch, Islamic Azad University
2 Amirkabir University of Technology
چکیده [English]

In this paper, the major reasons for using of partial-admission technique in supersonic turbines are described. Then, a summary of the design process of supersonic turbine test rig is presented. This test rig is used to produce the turbine characteristic curves. Gasdynamic similarity calculations are described and the standards for how to install and use the measurement systems in the turbine test rig have been introduced. The turbine characteristic curves obtained in this work have been compared with the results of the turbine performance prediction code and the other works. Considering the validated performance code, the results of the test rig are acceptable. Also, the model turbine efficiency at partial-admission condition is 20 units less than full-admission condition.cceptable.

کلیدواژه‌ها [English]

  • Supersonic Turbine
  • Turbine Characteristic Map
  • Full Admission
  • Partial Admission
  • Turbine Test Rig
  • Gas-Dynamic Similarity
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