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Influence analysis of fluctuation parameters on flow stability based on uncertainty method.

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This study introduces a novel method to measure flow fluctuation by analyzing pressure synchronicity. This technique aids in optimizing flow facility design and improving stability.

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Area of Science:

  • Fluid dynamics
  • Experimental mechanics
  • Measurement science

Background:

  • Flow facilities are crucial for research and development, but flow fluctuations can impact experimental accuracy and system stability.
  • Understanding the relationship between pressure and flow fluctuation is essential for effective monitoring and control.

Purpose of the Study:

  • To investigate the theoretical and experimental relationship between flow fluctuation and pressure in a flow facility.
  • To propose and validate a novel method for measuring flow fluctuation.
  • To identify key parameters influencing flow fluctuation for design optimization.

Main Methods:

  • Theoretical analysis of flow dynamics.
  • Experimental measurements within a flow facility.
  • Development of a measurement method based on pressure-flow synchronicity.
  • Uncertainty analysis using a sample-based stochastic model.

Main Results:

  • A method for measuring flow fluctuation by analyzing pressure synchronicity was successfully developed.
  • The amplitude of flow fluctuation was calculated using measured pressure data.
  • Flow fluctuation was measured across a wide frequency range.
  • Key parameters significantly influencing flow fluctuation were identified through uncertainty analysis.

Conclusions:

  • The proposed method enables accurate measurement of flow fluctuation by leveraging pressure data.
  • The identified influential parameters provide critical insights for optimizing flow facility design.
  • This research contributes to enhancing the stability and reliability of flow facilities.