TY - JOUR ID - 4335 TI - Studying Wind Effect on the Hydrodynamic Behavior of Lock-Exchange Density Current JO - Amirkabir Journal of Mechanical Engineering JA - MEJ LA - en SN - 2008-6032 AU - Nazmi, Parsa AU - Khavasi, Ehsan AU - Rostami Dehjalali, Sadegh AD - Department of Mechanical Engineering, University Of Zanjan, Zanjan, Iran AD - Mechanical engineering department, University of Zanjan Y1 - 2021 PY - 2021 VL - 53 IS - 9 SP - 4807 EP - 4826 KW - Wind flow KW - Turbidity current KW - Turbulent phenomena KW - Sedimentation KW - Volume of Fluid Method DO - 10.22060/mej.2021.19158.6962 N2 - In the present study, the two-dimensional lock-exchange turbidity current under the influence of wind flow is modeled using open-source software. To solve this, the large eddy simulation method has been used in order to observe turbulent phenomena more accurately. By developing the two-phase solver of the software so that the equations of the volume of fluid method are coupled with the scalar equation of concentration, the three-phase problem is simulated as a phase of a mixture of dense fluid and pure water next to the air phase. The results show that an increase in wind speed reduces the buoyancy force driving the turbidity current and increases the entrainment, which means faster pollution of water areas. This increase in wind speed also increases the wall shear stress, with the difference that the amount of wall shear stress at low wind speeds is not significant. So this prevents a significant change in the deposition behavior of the current. Studying the current's sedimentation behavior, showed that at high wind speeds, the co-current wind flow corresponding to the turbidity current has more harmful effects than the reverse wind flow and its sediment accumulation is getting higher. UR - https://mej.aut.ac.ir/article_4335.html L1 - https://mej.aut.ac.ir/article_4335_69619072fbc04354fe0437ca7dc500e0.pdf ER -