논문실적
| 곡관하류의 유동특성과 초음파유량계 설치위치의 상관관계 분석 |
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학술지명 대한기계학회
저자 조용,이동근
발표일 2013-11-01
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In this study, the establishment of the criteria for accurate measurement is investigated via a statistical analysis of experimental results. The magnitude of influence on measurement errors is severely affected by the number of paths, mounting angle of sensor, straight pipe length in sequence, and Reynolds number. Three-dimensional numerical analysis has been conducted to understand the flow patterns downstream of a double bent pipe. Numerical analysis shows that the results well agreed with the experimental ones in case of a sensor mounting angle of 0° and L/D = 3, 5 of 45°, 135° in a single path. As a result, when the Reynolds number is 700,000?1,400,000, the sensor error of a single-path ultrasonic flowmeter is reduced with the mounting condition of L/D = 3, 45°. |
