CAJ | 학술논문

通过数值模拟对阿拉沟水库溢洪道流场在两种工况下进行三维流场数值模拟，采用 RNG k ～ε模型模拟溢洪道流场湍流，并利用流体体积分数法（VOF）追踪自由水面，将得出两种工况下的溢洪道断面压强、自由水面高程、断面流态等计算结果，并与物理模型结果进行对比。结果表明数学模型计算能够准确地反映不同边界条件下溢洪道水流流态及各个参数，并且通过数值计算可以获得溢洪道在任何运行工况下任意位置的流场结构。其数值计算结果可以为阿拉沟水库溢洪道优化设计提供较可靠的理论依据和参考。
통과수치모의대아랍구수고일홍도류장재량충공황하진행삼유류장수치모의，채용 RNG k ～ε모형모의일홍도류장단류，병이용류체체적분수법（VOF）추종자유수면，장득출량충공황하적일홍도단면압강、자유수면고정、단면류태등계산결과，병여물리모형결과진행대비。결과표명수학모형계산능구준학지반영불동변계조건하일홍도수류류태급각개삼수，병차통과수치계산가이획득일홍도재임하운행공황하임의위치적류장결구。기수치계산결과가이위아랍구수고일홍도우화설계제공교가고적이론의거화삼고。
Throuh using the numerical simulation method to simulate the 3-D flow field under two working conditions of the spillway in Alagou Reservoir ,adopting the RNG k ~ ε model to simulate the turbulent flow of the spillway ,and using the fluid volume fraction method(VOF) to track the free water surface ,the calculation results for the section pressure in-tensity ,free surface elevation and section flow pattern of the spillway under two working conditions are obtained and com -pared with the results from the physical model .The results show that the mathematical model calculation could accurately reflect the flow patterns and various parameters of the spillway under different bowndary conditions ,and achieve the flow field structure under the optional positions of the spillway under optional working conditions .The numerical calculation results could provide the reliable theory basis for the optimal design of the spillway in Alagou Reservoir .