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고온.고압 환경에서 가열평판에 충돌하는 디젤분무의 특성

임경훈;이봉수;김종현;구자예
Im, Gyeong-Hun;Lee, Bong-Su;Kim, Jong-Hyeon;Gu, Ja-Ye

  • 발행 : 2001.05.01

초록

Characteristics of a diesel spray impingement with the variation of ambient temperature, wall temperature and ambient pressure were investigated through shadowgraphy method by using high speed camera. The radial penetration of spray was increased with ambient temperature and wall temperature. It is resulted from the decrease of ambient gas density caused by the increase of temperature. The height of spray was also increased with ambient temperature and wall temperature, because the height of stagnate region is noticeably increased, although height of wall jet vortex is decreased. At the same ambient pressure, the area ratio of impinging spray of room temperature environment to high temperature environment was increased, as the temperature difference between room temperature and high temperature increases. And the increment of area ratio was higher at low ambient pressure than high ambient pressure.

키워드

디젤충돌분무;쉐도우 그래피;반경방향 관통도;분무높이;정체영역

참고문헌

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