人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
17期
63-65,93
,共4页
水跃长度%类比分析%系数修正%理论计算%模型量测%低弗汝德数
水躍長度%類比分析%繫數脩正%理論計算%模型量測%低弗汝德數
수약장도%류비분석%계수수정%이론계산%모형량측%저불여덕수
length of hydraulic jump%analogy analysis%coefficient modification%theoretical calculation%model measurement%lower Froude number
低水头灌区泄水建筑物下游易形成低弗汝德数水跃，灌区泄水建筑物下游常设有消力池消能，合理确定低弗汝德数水跃长度，关系到消力池长度的确定及消力池的消能效果。根据前人研究结果，结合工程实例、理论分析计算、概化模型试验研究及工程应用验证，类比了低弗汝德数泄水建筑物下游水跃长度的欧勒佛托斯基与陈椿庭公式，并对后一个公式系数进行了修正；通过理论计算及试验验证，得出同一水跃长度公式反映的跃长与跃前低弗汝德数Fr、共轭水深关系规律不尽相同。
低水頭灌區洩水建築物下遊易形成低弗汝德數水躍，灌區洩水建築物下遊常設有消力池消能，閤理確定低弗汝德數水躍長度，關繫到消力池長度的確定及消力池的消能效果。根據前人研究結果，結閤工程實例、理論分析計算、概化模型試驗研究及工程應用驗證，類比瞭低弗汝德數洩水建築物下遊水躍長度的歐勒彿託斯基與陳椿庭公式，併對後一箇公式繫數進行瞭脩正；通過理論計算及試驗驗證，得齣同一水躍長度公式反映的躍長與躍前低弗汝德數Fr、共軛水深關繫規律不儘相同。
저수두관구설수건축물하유역형성저불여덕수수약，관구설수건축물하유상설유소력지소능，합리학정저불여덕수수약장도，관계도소력지장도적학정급소력지적소능효과。근거전인연구결과，결합공정실례、이론분석계산、개화모형시험연구급공정응용험증，류비료저불여덕수설수건축물하유수약장도적구륵불탁사기여진춘정공식，병대후일개공식계수진행료수정；통과이론계산급시험험증，득출동일수약장도공식반영적약장여약전저불여덕수Fr、공액수심관계규률불진상동。
Hydraulic jump with low Froude number is usually formed at downstream of a discharge structure with low water head in irrigation area. The stilling basin is usually built at downstream of the discharge structure for flow energy dissipation, and the reasonable length as well as dissipation effects is closely dependent on the length of the hydraulic jump with low Froude num-ber. According to results of previous studies and on the basis of engineering cases, theoretical analysis and generalized model test research, various formulas used in calculation of hydraulic jump length with low Froude number, especially Ole Fertoski Formula and Chen Chunting Formula, are studied by analogy, and the coefficients of the later formula is modified and validated. Through analysis on the theoretical calculation and experimental results, it is concluded that even for the same formula of hydraulic jump length, the relationships of length of hydraulic jump, low Froude number before the jump and conjugate depths are not completely same.
