CAJ | 학술논문

泄洪洞具有高流速、低Fr数和小底坡的特点，掺气空腔容易产生回水，布置掺气设施的难度较大。采用模型试验和理论分析相结合的方法对泄洪洞掺气设施进行研究。通过比较掺气挑坎高度、坡度、坎后底坡及衔接形式，分析这些特征参数对空腔回水、通气量及流态的影响，拟合了空腔无回水的临界Fr数与挑坎高度的关系式，总结了掺气设施体形优化方法，研究成果已被实际工程所采用。
설홍동구유고류속、저Fr수화소저파적특점，참기공강용역산생회수，포치참기설시적난도교대。채용모형시험화이론분석상결합적방법대설홍동참기설시진행연구。통과비교참기도감고도、파도、감후저파급함접형식，분석저사특정삼수대공강회수、통기량급류태적영향，의합료공강무회수적림계Fr수여도감고도적관계식，총결료참기설시체형우화방법，연구성과이피실제공정소채용。
With the characteristics of high flow velocity, low Fr number and slight slope of hydraulic tunnel, the backwater frequently occurs in the downstream of aerated cavity, so the aerator design of hydraulic tunnel is difficult. The model investigation and theory analysis are used to study the aerator. By comparing the height, slope and type of aerator, the influences of those factors on backwater, aerated volume and flow pattern are analyzed. The formula between the critical Fr number and the aerator height is obtained and the shape optimization method of aerator is generalized. The research results have been applied in actual hydraulic projects.