Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane
نویسندگان
چکیده
Based on numerical simulations, the heat transfer and flow field of a turbine vane are analyzed film cooling is improved. The optimization objective increasing overall effectiveness with cascade pressure loss factors staying almost unchanged. Thus, cylindrical holes were replaced by laidback V-crater holes. To analyze effect structural adjustment vane, distributions, mass coefficients investigated for internal external systems. explain advantages shaped over holes, mechanisms, superposition, discharge coefficients, blow ratios, compared. Meanwhile, influence ratios mainstream Reynolds numbers was analyzed. After optimization, at design condition, increased 4.19% surface 1.78% suction surface. However, factor 0.26% only.
منابع مشابه
Simulation of Mist Film Cooling on Rotating Gas Turbine Blades
Film cooling technique has been successfully applied to gas turbine blades to prevent it from the hot flue gas. However, a continuous demand of increasing the turbine inlet temperature to raise the efficiency of the turbine requires continuous improvement in film cooling effectiveness. The concept of injecting mist (tiny water droplets) into the cooling fluid has been proven under laboratory co...
متن کاملEvolution Strategies for Film Cooling Optimization
References 1Al Taweel, A. M., and Landau, J., “Turbulence Modulation in TwoPhase Jets,” International Journal of Multiphase Flow, Vol. 3, No. 2, 1977, pp. 341–351. 2Gore, R. A., and Crowe, C. T., “Effects of Particle Size on Modulating Turbulent Intensity,” International Journal of Multiphase Flow, Vol. 15, No. 2, 1989, pp. 279–285. 3Schreck, S., andKleis, S. J., “Modi cationofGrid-GeneratedTu...
متن کاملNumerical optimization of hydrofoil geometry for a Darrieus hydraulic turbine using dynamic mesh and central composite design
In this study, a Darrieus hydraulic turbine for power generation applications is chosen and the response surface methodology (RSM) based on central composite design (CCD) is applied to obtain the optimized design for its hydrofoil geometry to increase the torque coefficient. For this aim, all turbine performance factors, except hydrofoil geometry, were considered to be constant and the turbine ...
متن کاملAircraft Gas Turbine Blade and Vane Repair
The high replacement costs of aircraft gas turbine blades and vanes have created a fast-growing, highly-specialized segment of the aircraft repair industry. The economic rationale for repair in lieu of replacement is prima facie. The metallurgical rationale is less certain, but satisfactory flight performance over the past twenty-five years at least attests to the technical adequacy of blade an...
متن کاملA Numerical Analysis of Heat Transfer and Effectiveness on Film Cooled Turbine Blade Tip Models
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program Office plays a key part in helping NASA maintain this important role. The NASA STI Program Office is operated by Langley Research Center, the Lead Center for NASA's scientific and technical information. The NASA STI Program Office provides ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Engineering Applications of Computational Fluid Mechanics
سال: 2022
ISSN: ['1997-003X', '1994-2060']
DOI: https://doi.org/10.1080/19942060.2021.2019127