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opening ratio
The mechanism of internal pressure fluctuation is obtained by using the proposed method in the frequency domain and a new equivalent opening ratio is defined to evaluate internal pressure fluctuation.
      
Helmholtz resonance is likely to occur when the equivalent opening ratio is adequately high, and controlling individual opening dimension is an effective strategy for avoiding Helmholtz resonance in engineering.
      
The technique is illustrated in the case of a plane turbulent impinging twin-jet with an opening ratio of 10.
      
It is also demonstrated that large chirp and mismatch of the phase inversion reduces the eye opening ratio (EOR) which can seriously affect the performance of the wavelength converter to be used as a sub-system component in all-optical networks.
      
The effects of the feed rate, the gas flowrate and the opening ratio and hole diameter of the perforated plates on the operating stability of the fluidized bed were examined.
      
It is shown that the internal pressure fluctuation monotonously increases with increasing equivalent opening ratio.
      
In order to simulate low equivalent opening ratio with adequately large openings, the model's internal volume was exaggerated.
      
Modify strainer/nozzle opening ratio so that nozzle holes are at least twice the diameter of strainer openings.
      
Simulated NF and conversion gain of single-balanced passive mixer with respect to the opening ratio.
      
The variation of the opening ratio L/Dhas a small effect on the volume flow rate QN.
      
They have reported that for an opening ratio of 0.25 no definite trend could be seen when heat transfer was compared for the four arrangements.
      
The opening ratio L/Dwas found to have only a small effect on the volume flow rates.
      
The opening ratio of the distributor is 2.1% and a nozzle has four holes for uniform air supply.
      
 

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