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자료유형
학술저널
저자정보
강희정 (한국항공우주연구원)
저널정보
한국전산유체공학회 한국전산유체공학회지 한국전산유체공학회지 제26권 제3호
발행연도
2021.9
수록면
26 - 33 (8page)
DOI
10.6112/kscfe.2021.26.3.026

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이 논문의 연구 히스토리 (2)

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Aerodynamic interaction of two props rotating with different phase angles was investigated using the computational fluid dynamics methodology. The separation distance between the two props with two-blade is d/R=0.1471 and the phase angle difference consists from –75 degrees to +90 degrees. The aerodynamic interaction of the two props resulted in oscillating unsteady aerodynamic loads. The average thrust of each prop was lower than that of a single prop, and the average torque was almost the same as that of a single prop. The average value and the minimum value of the oscillating thrust showed opposite tendencies between the two props according to the phase angle difference, but in the case of torque, the effect was relatively insignificant. It was also found that the aerodynamic load had the minimum value at the position where the blades of the two props were closest to each other. The sum of the aerodynamic loads of the two props was shown in the form of 2/rev and 4/rev depending on the phase angle difference between the two props, and the amplitude became maximum as the relative phase angle difference between the two props is closer to 0 degree, and minimum as it approaches 90 degrees. In the comparison of the velocity field, there were found that the aerodynamic interaction of the two props had an asymmetric velocity field unlike the case of a single prop and the center of the wake had shifted towards each other.

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