Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)
- Volume 21 Issue 11
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- Pages.1449-1457
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- 1997
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- 1226-4881(pISSN)
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- 2288-5324(eISSN)
DOI QR Code
Development of five-hole probe nulling method reliable in complex flow field
복잡한 유동장에서도 신뢰성 있는 5공프로브 널링기법의 개발
- Kim, Jin-Gwon (Dept.of Mechanical Engineering, Graduate School of Seoul National University) ;
- Gang, Sin-Hyeong
- Published : 1997.11.01
Abstract
Since a non-nulling method of five-hole probes is valid only when the flow angle is within the calibrated angle range, it can not be used in a complex flow field. Full angle range pressure coefficient maps show that widely used nulling methods do not guarantee correct alignment of the probe with the flow direction in the unknown complex flow field. Zone decision method and features of zone map were studied by investigating the full angle range pressure coefficient maps. A reliable and efficient new nulling algorithm using zone decision by pressure ordering is proposed and verified. Since the zone decision method by pressure ordering can decide whether the flow is within the calibration angle range or not, it is useful in wide angle nonnulling methods, too.
Keywords
- Five-Hole Probe;
- Nulling Method;
- Pressure Coefficient Map;
- Zone Decision by Pressure Ordering;
- Complex Flow Field
- 5공프로브;
- 널링법;
- 압력계수지도;
- 압력비고에 의한 영역결정;
- 복잡합 유동장;