Numerical investigation on cooling performance of a twisted gas turbine blade with leading edge cooling holes

Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_JCARME-11-2_009

تاریخ نمایه سازی: 17 اسفند 1400

Abstract:

The new and advance technologies for higher performance and lower maintenance are required to operate  gas turbines at higher operating temperatures. Higher turbine inlet temperature results in higher blade metal temperatures. These variations in temperatures of the blade material must be limited such that the blades have a sufficient life span. To make blade material temperature within the limits, the coolant air is bled from the compressor to protect the outer surface of the turbine blade from the hot gases. The purpose of this study  is to investigate the cooling performance of a blade with leading edge cooling holes. The numerical simulation approach using ANSYS Fluent has been considered. The analysis is performed by taking different hole geometries namely cylindrical (model ۱) and tapered (model ۲) on the leading edge of the turbine blade for different blowing ratios. The analysis also compares the cooling effectiveness of the blade for two different coolants namely air and nitrogen. The results show that for highest effectiveness hole (E۳ hole), Model ۱ and Model ۲ comparison suggest that Model ۱ has ۱.۲% more cooling effectiveness for air as coolant. For E۳ hole, the comparison of Model ۱ between two coolants show that film cooling effectiveness of the air gives ۰.۶% more film cooling effectiveness compared to nitrogen. The presented work helps researchers and blade manufacturers to select the correct hole geometry, coolant type, and determine the best blowing ratio to improve the film cooling efficiency of gas turbine blades with leading edge holes.

Authors

Mithilesh Sahu

Department of Mechanical Engineering, Gayatri Vidya Parishad College of Engineering (Autonomous), Madhurawada, AP, ۵۳۰۰۴۸, India

Moughbul Shaik

Department of Mechanical Engineering, Gayatri Vidya Parishad College of Engineering (Autonomous), Madhurawada, AP, ۵۳۰۰۴۸, India

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  • D. L. Schmidt, B. Sen, and D. G. Bogard, “Film ...
  • N. H. K. Chowdhury, S. A. Qureshi, M. Zhang, and ...
  • N. Nandakumar and N. S. Moorthi, “Performance analysis of gas ...
  • S. Paregouda and T. Rao, “CFD simulation on gas turbine ...
  • H. Brahmaiah and M. Lava Kumar, “Heat transfer analysis of ...
  • L. Zeng, P. Chen, X. Li, J. Ren, and H. ...
  • H. wang Li, F. Han, Z. yu Zhou, Y. wen ...
  • T. Bacci et al., “Experimental and CFD analysis of a ...
  • M. K. Sahu and Sanjay, “Investigation of the effect of ...
  • M. K. Sahu and Sanjay, “Comparative exergoeconomic analysis of basic ...
  • M. K. Sahu and Sanjay,“Exergoeconomic investigation of power utility based ...
  • M. K. Sahu and Sanjay,“Thermo-economic investigation of power utilities: intercooled ...
  • M. K. Sahu and Sanjay, “Comparative exergoeconomics of power utilities: ...
  • M. K. Sahu and Sanjay, “Thermo-economic investigation of basic and ...
  • M. K. Sahu, T. Choudhary, and Y. Sanjay, “Thermoeconomic investigation ...
  • G. E. Andrews, M. L. Gupta, and M. C. Mcpadi, ...
  • G. E. Andrews, A. A. Asere, M. L. Gupta, and ...
  • G. E. Andrews and M. C. Mkpadi, “Full coverage discrete ...
  • S. Mendez and F. Nicoud, “An adiabatic homogeneous model for ...
  • A. K. Sinha, D. G. Bogard, and M. E. Crawford, ...
  • A. K. Sinha, D. G. Bogard, and M. E. Crawford, ...
  • G. Laschet, “Homogenization of the fluid flow and heat transfer ...
  • G. Laschet, R. Krewinkel, P. Hul, and D. Bohn, “Conjugate ...
  • M. Sasaki, K. Takahara, T. Kumagai, and M. Hamano, “Film ...
  • D. E. Metzger, D. I. Takeuchi, and P. A. Keunstler, ...
  • E. R. G. Eckert, “Analysis of film cooling and full-coverage ...
  • R. E. Mayle and F. J. Camarata, “Multihole cooling film ...
  • S. Ekkad, D. Zapata and J.-C. Han, “Film effectiveness over ...
  • A.B. Mehendale, J.C. Han and S. Ou, “Influence of high ...
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