TY - JOUR ID - 82704 TI - Geometry Modification of Stilling Basin USBR VI with Numerical Simulation JO - Journal of Hydraulics JA - JHYD LA - en SN - 2345-4237 AU - Behnamtalab, Ehsan AU - Ghodsian, Masoud AU - Zarrati, Amirreza AU - Salehi Neyshabouri, Seyed Ali Akbar AD - Civil Engineering Group, Engineering Department, Hakim Sabzevari University AD - Civil Engineering and environmental Department, Tarbiat Modares University of Tehran AD - Civil Engineering and Environmental Department, Amirkabir University AD - Civil Engineering and Environmental Department, Tarbiat Modares University of Tehran Y1 - 2019 PY - 2019 VL - 13 IS - 4 SP - 1 EP - 15 KW - Stilling Basin USBR VI KW - Numerical Model KW - Flow Field KW - Beichley Graph KW - Flow3D DO - 10.30482/jhyd.2019.82704 N2 - Stilling Basin USBR VI is one of the most commonly impact type energy dissipaters. Also this basinis one of the oldest basins that designed for dissipating of outlet flow from the pipes. This basin is asmall box-like structure with a hanging wall and an endsill. Hanging wall is to distribute energy ofincoming flow to basin width. This basin requires no tailwater for successful performance. Numericalmodel validation was performed with comparison of recorded pressure on hanging wall and flowdepth on endsill in physical model and with comparison of incoming pipe velocity profile withnikuradse physical result in 1932. For basin outlet flow field modification, 4 parameters of meanvelocity on endsill, mean velocity in vicinity of endsill, coriolis coefficient and discharge distributionon endsill was selected. These parameters were calculated for more than 100 different models. Finally,with comparison of results of parameters in different models, it is found that gradual variation of widthof stilling basin has had the best results after vertical wall for the modification of stilling basin anduniform distributing of flow rate in width direction. UR - https://jhyd.iha.ir/article_82704.html L1 - https://jhyd.iha.ir/article_82704_6f981ed4b5132e612f8626ec80777a49.pdf ER -