水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2015年
2期
103-109
,共7页
高东红%刘亚坤%高梦露%孙洪亮
高東紅%劉亞坤%高夢露%孫洪亮
고동홍%류아곤%고몽로%손홍량
竖缝式鱼道%紊流模型%VOF%能量损耗
豎縫式魚道%紊流模型%VOF%能量損耗
수봉식어도%문류모형%VOF%능량손모
vertical slot fishway%turbulence model%VOF%energy expenditure
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。
為研究魚道的水力學特性,本研究採用 Fluent 商用軟件包詳細展示瞭3D 魚道計算流體動力學模型。該模型以三維雷諾平均 N - S 方程為理論基礎,採用群理論重整化的(RNG)k -ε紊流模型閉閤方程,配閤體積分辨率法(VOF)來描述魚道流體力學特性。模型結果錶明魚道內部彊烈的3D 速度場,伴隨有渦流、流動分離、漩渦、上升流和下降流等現象,併基于魚種上溯的爆髮遊速,計算成年粉紅鮭魚在流場中逆流上溯所受到的阻力與能量損耗,數值計算結果與前人研究成果吻閤度較高。能量消耗的定量分析對于魚道的優化設計、漁業管理都具有很好的藉鑒意義。
위연구어도적수역학특성,본연구채용 Fluent 상용연건포상세전시료3D 어도계산류체동역학모형。해모형이삼유뢰낙평균 N - S 방정위이론기출,채용군이론중정화적(RNG)k -ε문류모형폐합방정,배합체적분변솔법(VOF)래묘술어도류체역학특성。모형결과표명어도내부강렬적3D 속도장,반수유와류、류동분리、선와、상승류화하강류등현상,병기우어충상소적폭발유속,계산성년분홍해어재류장중역류상소소수도적조력여능량손모,수치계산결과여전인연구성과문합도교고。능량소모적정량분석대우어도적우화설계、어업관리도구유흔호적차감의의。
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 .