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- W4293384830 abstract "The effects of the inlet duct length on the performance of the dense medium cyclones were investigated in this study. The pressure drops and separation efficiencies of the dense medium cyclones with different inlet duct lengths were measured in a cold test rig. A numerical simulation using the four-way coupling method was also conducted to estimate the flow field inside the dense medium cyclone. The experimental results show that a longer inlet duct length results in a lower static pressure drop. The overall separation efficiency first increases and then keeps almost unchanged as the inlet duct becomes longer. The simulated results show that the energy loss decreases as the inlet duct length increases. The changing trends of the static and total pressure drops with the inlet duct length are similar. According to the simulated flow fields, lengthening the inlet gas reduces tangential velocity near the vortex finder and therefore reduces the gas swirling loss. The inlet duct length affects the separation performance mainly by affecting the swirling particle roof. A longer inlet duct leads to fewer particles moving in the swirling particle roof in the dense medium cyclone, which accounts for a better separation efficiency. It was also found that the conventional one-way coupling method fails to qualitatively analyze the effects of inlet duct length on the separation performance of the dense medium cyclone. • Cyclones with different inlet duct lengths were tested in a cold test rig. • Flows in dense medium cyclones were simulated using a four-way coupling method. • The inlet duct length only affects the gas tangential velocity near the roof. • The change of separation performance was mainly due to the swirling particle roof. • The simulated results of the one-way and four-way coupling methods were compared." @default.
- W4293384830 created "2022-08-28" @default.
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- W4293384830 date "2022-11-01" @default.
- W4293384830 modified "2023-10-18" @default.
- W4293384830 title "Effects of the inlet duct length on the performance of a dense medium cyclone: An experimental and numerical study" @default.
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- W4293384830 doi "https://doi.org/10.1016/j.cherd.2022.08.031" @default.
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