CAJ | 학술논문

河工模型试验中，变态河工模型量测的断面平均流速与正态河工模型量测的断面平均流速有一定的偏离，变率取值越大，变态模型的断面平均流速与正态模型的断面平均流速偏离度越大。通过同变率典型工程模型试验得出：变态模型的断面平均流速总体大于正态模型的断面平均流速。变态河工模型断面平均流速偏离度受变率选取、边界条件及流量大小影响，边界顺直、水流平稳处，变态模型的断面平均流速偏离度小于20％；边界变化较大、流态紊乱处，变态模型的断面平均流速偏离度大于20％。
하공모형시험중，변태하공모형량측적단면평균류속여정태하공모형량측적단면평균류속유일정적편리，변솔취치월대，변태모형적단면평균류속여정태모형적단면평균류속편리도월대。통과동변솔전형공정모형시험득출：변태모형적단면평균류속총체대우정태모형적단면평균류속。변태하공모형단면평균류속편리도수변솔선취、변계조건급류량대소영향，변계순직、수류평은처，변태모형적단면평균류속편리도소우20％；변계변화교대、류태문란처，변태모형적단면평균류속편리도대우20％。
In river model experiment, the section average flow velocity is different between distorted river model and normal model, the deviation degree of average flow velocity increases with the increase of dis-torted rate. The typical construction experiment shows that the section average flow velocity of distorted river model is faster than normal model; it is affected by distorted rate, boundary conditions and flow. The deviation degree of section average flow velocity is less 20% in boundary straight and flow smoothly, other-wise the opposite.