This study employs numerical simulations to investigate the effectiveness of mist film cooling on a flat plate, a critical aspect of advanced cooling techniques. The analysis focuses on several key parameters, including the momentum flux ratio (MR) with values of 0.32 and 0.87, mist concentration ranging from 2 to 10%, and turbulent intensities of 3, 10, and 20%. The simulations are conducted using the established k-epsilon turbulence model. The primary objective is to evaluate the lateral average effectiveness and area average film cooling effectiveness of mist on the flat plate. By systematically varying turbulent intensity, momentum flux, and mist concentration within the cooling air, the study provides valuable insights into the complex interplay of these factors and their impact on optimizing mist film cooling strategies for turbine engine applications. This investigation contributes to a deeper comprehension of the intricate dynamics involved in mist film cooling, thereby yielding pragmatic insights for refining cooling methodologies across diverse engineering contexts.

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Insightful Perspective on Mist Film Cooling: Analysis of Turbulent Intensity and Momentum Flux

  • Abhishek Verma,
  • Deepak Kumar,
  • Debi Prasad Mishra

摘要

This study employs numerical simulations to investigate the effectiveness of mist film cooling on a flat plate, a critical aspect of advanced cooling techniques. The analysis focuses on several key parameters, including the momentum flux ratio (MR) with values of 0.32 and 0.87, mist concentration ranging from 2 to 10%, and turbulent intensities of 3, 10, and 20%. The simulations are conducted using the established k-epsilon turbulence model. The primary objective is to evaluate the lateral average effectiveness and area average film cooling effectiveness of mist on the flat plate. By systematically varying turbulent intensity, momentum flux, and mist concentration within the cooling air, the study provides valuable insights into the complex interplay of these factors and their impact on optimizing mist film cooling strategies for turbine engine applications. This investigation contributes to a deeper comprehension of the intricate dynamics involved in mist film cooling, thereby yielding pragmatic insights for refining cooling methodologies across diverse engineering contexts.