为研究鱼道的水力学特性，本研究采用 Fluent 商用软件包详细展示了3D 鱼道计算流体动力学模型。该模型以三维雷诺平均 N － S 方程为理论基础，采用群理论重整化的（RNG）k －ε紊流模型闭合方程，配合体积分辨率法（VOF）来描述鱼道流体力学特性。模型结果表明鱼道内部强烈的3D 速度场，伴随有涡流、流动分离、漩涡、上升流和下降流等现象，并基于鱼种上溯的爆发游速，计算成年粉红鲑鱼在流场中逆流上溯所受到的阻力与能量损耗，数值计算结果与前人研究成果吻合度较高。能量消耗的定量分析对于鱼道的优化设计、渔业管理都具有很好的借鉴意义。%A three-dimensional (3D) computational fluid dynamics model (CFD) of a verticalslot fishway was used to characterize fishway hydrodynamics in the use of Fluent in this paper .The model solved the three dimensional Reynolds-Averaged Navier-Stokes equations ,closed with the renormalized group theory (RNG) k - ε turbulence formulation and volume of fraction(VOF) method .Model results showed that a strong 3D velocity field existed in the fishway ,with ed-dies ,flow separations ,vortices ,upwellings and downwellings .In addition ,based on the burst swimming speeds of fish species ,the simulated flow-field results were employed to calculate the force acting on the adult pink salmon and the en -ergy expenditure of the fish .The numerical results agreed well with previous research .The quantification of energy ex-penditure in the fishways could be utilized for optimizing the design ,operation ,and management of fishways .
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