OPEN ACCESS
Forebay sedimentation is a common problem in large pump stations because the water is taken in from heavily silt-carrying rivers. Targeting the #3 Pump Station of West Trunk Line (Phase I), Gansu Jingtaichuan Irrigation District, the author learned about the current situation of forebay sedimentation through site investigation, and constructed a 3D structural model of prototype forebay based on ICEM-CFD. Furthermore, the flow pattern of the straight-edge front inflow (SEIF) forebay was simulated based on FLUENT. Then, two anti-silt measures, i.e. diversion pier and pressure plate, were put forward to improve the flow pattern of the forebay. The results show that the simulation results on forebay flow pattern agree well with the data acquired through site investigation; the trapezoid diversion pier reduced the range of the main reflux zone to some extent by distributing the forebay flow, failing to obviously improve the distribution of the flow field; the 45° pressure plate exhibited obvious optimization effect, reducing the range and intensity of reflux zone on both sides of the forebay.
forebay of pump station, silt accumulation, numerical simulation, trapezoid diversion pier, 45° pressure plate
This work was supported by the National Natural Science Foundation of China [grant numbers 51579102, 31360204], the Support Plan of Innovative Talents of Science and Technology of Henan Province [grant number 174200510020], the Support Plan of Innovative Team of Science and Technology of University of Henan Province [grant number 19IRTSTHN030], the Special Project of Science and Technology of Water Conservancy of Ningxia Hui Autonomous Region [grant number TYZB-ZFCG-2017-31] and Doctoral Graduate Innovation Fund of North China University of Water Resources and Electric Power.
[1] Xu CD. (2003). Applied research on construction supervision system of high-lift pumping cascade irrigation project. Northwest A&F University, Xianyang.
[2] Mi ZH, Zhou DQ, Mao YT. (2015). Three-dimensional CFD simulation of inlet structure flow in pump station based on Eulerian solid- liquid two-phase flow model. Journal of Drainage and Irrigation Machinery Engineering 15(6): 494-498. https://doi.org/10.1088/1755-1315/15/6/062027
[3] Fletcher BP, Grace JL. (1977). Source: United states waterways experiment station. Technical Report, Vicksburg.
[4] Shafai-Bajestan M, Behzadi-Poor A, Abt SR. (1998). Source: International water resources engineering conference-proceedings: 1553-1558.
[5] Constantinescu GS, Patel VC. (2000). Role of turbulence model in prediction of pump-bay vortices. Journal of Hydraulic Engineering 126(5): 387-391. http://dx.doi.org/10.1061/(ASCE)0733-9429(2000)126:5(387)
[6] Liu XY, Gao CC, Shi LW, Liu W. (2010). Numerical simulation for fluid meliorating in both forebay and suction bay of pump stations. Journal of Drainage and Irrigation Machinery Engineering 28(3): 242-246.
[7] Han JQ, Li YW, Gao DS, Cao K, Huang LW. (2012). 3D Numerical simulation and optimum design of circulating water pump flow channel in thermal plant. Yellow River.
[8] Nakato T. (2004). Application of suction scoops to improve pump-approach flow distributions in three-pump intake bays. World Water and Environmental Resources Congress, pp. 1-10.
[9] Zhou DQ, Mi ZH, Mao YT. (2013). 3D Numerical simulation of inlet structure flow in pump station based on eulerian solid-liquid two-phase flow model. Transactions of the Chinese Society of Agricultural Machinery 44: 48-52.
[10] Yu YH, Cheng B. (2012). CFD simulation and optimization on inflow pattern of diversion and intake pump stations with side-inlets Water Resources & Hydropower Engineering 43: 72-75.
[11] Cheng B, Yu YH. (2012). CFD simulation and optimization for lateral diversion and intake pump stations. Procedia Engineering 28: 122-127.
[12] Hou CS. (2012). Three-dimensional numerical analysis of flow pattern in pressure forebay of hydropower station. Procedia Engineering 28: 128-135.
[13] Cong GH, Wang FJ. (2008). Applicability of turbulence models in numerical simulation of vortex flow in pump sump. Transactions of the Chinese Society of Agricultural Engineering 24: 31-35.
[14] Goudarzizadeh R, Hedayat N, Jahromi SHM. (2010). Three-dimensional simulation of flow pattern at the lateral intake in straight path, using finite-volume method. World Academy of Science Engineering & Technology (71): 656.
[15] Kim HR, Kim SK, Kim MS, Park SH, Min JK, Ha MY. (2016). Numerical study of fluid flow and convective heat transfer characteristics in a twisted elliptic tube. Journal of Mechanical Science and Technology 30(2): 719-731.
[16] Luo C, Qian J, Liu C, Chen F, Xu J, Zhou QL. (2015). Numerical simulation and test verification on diversion pier rectifying flow in forebay of pump station for asymmetric combined sluice-pump station project. Transactions of the Chinese Society of Agricultural Engineering 26(1): 71-78.
[17] Ji BB, Chen JP. (2012). The example of ANSYS ICEM CFD meshing technology. China Water Power Press, Beijing.
[18] Cheng L, Liu C, Zhou JR, Tang FP. (2001). Numerical simulation of sill flows in the forebay of pump station. Journal of Hohai University: Natural Sciences 29: 42-45.
[19] Xu CD, Yang K, Zhou LB, Song YZ, He SM. (2011). Numerical simulation on geometric form of pump sump in the Yellow River Pump Station. Journal of Gansu Sciences 23: 150-154.
[20] Liu C, Cheng L, Tang FP. (2001). Numerical simulation of three-dimensional turbulent flow for pumping forebay. Journal of North China University of Water Resources and Electric Power (Natural Science Edition) 36-40.
[21] Gao CC, Huang JW, Wang WS. (2007). Numerical simulation of flow field in sediment pump station forebay. China Water Transport 7: 81-83.
[22] Marovic B, Kolak D. (2012). Combination of CFD dimensions: Industry wide first universal-1D-/3D- computational fluid dynamics simulation software. Mechatronik 120: 34-35.
[23] Zeng H. (2014). Design optimization of pump station forebay based on the CFD numerical simulation. Hunan University, Changsha, C.S.
[24] Chen S. (2018). Numerical simulation of split-hopkinson pressure bar test on high-density polyethylene. Chemical Engineering Transactions 66: 271-276. https://doi.org/10.3303/CET1866046
[25] Thanh TT, Kim DH. (2016). A CFD study into the influence of unsteady aerodynamic interference on wind turbine surge motion. Renewable Energy 90: 204-228. https://doi.org/10.1016/j.renene.2015.12.013
[26] Tang XL, Wang WC, Wang FJ, Li YJ. (2011). Numerical simulation of slit-laden flows in pump station forebay. Journal of Drainage and Irrigation Machinery Engineering 29(5): 411-417.
[27] Zheng X. (2018). Numerical simulation of aseismatic reinforced concrete frame structure with fiber reinforced plastics. Chemical Engineering Transactions 66: 1141-1146. https://doi.org/10.3303/CET1866191
[28] Xu CD, Cui XY, Wang XZ. (2010). Research on the reasons of the sediment deposition and the measures of anti-sedimentation in the side direction inflow forebay of pump station. New Technology & New Process 1: 5-8.
[29] Yu H. (2018). Numerical simulation of European option payoff based on stochastic differential delay equations. Mathematical Modelling of Engineering Problems 5(2): 102-107. Https://doi.org/10.18280/mmep.050207
[30] Chen SS, Yan HQ, Zhou ZF, He ZG, Wang L. (2014). Three-dimensional turbulent numerical simulation and model test of front-shaft tubular inlet conduit of pump station. Transactions of the Chinese Society of Agricultural Engineering 30: 63-71.
[31] Rafiee A, Cummins S, Rudman M, Thiagarajan K. (2012). Comparative study on the accuracy and stability of SPH schemes in simulating energetic free-surface flows. European Journal of Mechanics B-Fluids 36: 1-16.
[32] Zi D, Wang FJ, Yao ZF, Hou YK, Xiao RF, He CL, Yang EB. (2015). Effects analysis on rectifying intake flow field for large scale pump station with combined diversion piers. Transactions of the Chinese Society of Agricultural Engineering 31: 71-77.
[33] Bi SD, Liu MQ, Xu MS, Long XP. (2014). Analysis on the flow field of inlet structure of Xingshipo pump station by CFD method. International Symposium on Fluid Machinery and Fluid Engineering. IET 1-5.
[34] The Ministry of Water Resources of the People’s Republic of China. (2011). Design code for pump station: GB 50265-2010. China Planning Press, Beijing.