In this paper, computational fluid dynamic modelling was developed to study the effect of the floating jet velocity or submerged rotary jet in sludge prevention in a large crude-oil storage tank. The Euler-Euler method was used in a two-dimensional CFD model to describe oil and sludge flow behaviour at the bottom of the storage tank. By modifying some parameters, the k-e model was used to describe the turbulence of the mixing flow. The results show the effect of jet velocity, angle, and time on the mixing process. By increasing the velocity from 5 m s–1, the mixing pattern significantly changes and improves the mixing of the sludge with crude oil. To evaluate the results, chosen was the sludge profile related to the bottom of the sample tank, and modelling results showed an 80 cm reduction in thickness of the sludge, which corresponds well to the profile of the bottom of the tank. In addition, the y+ axis indicated that the amounts at all points were less than 300, which is acceptable in two-phase modelling.This work is licensed under a Creative Commons Attribution 4.0 International License.
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机译:本文建立了计算流体动力学模型,以研究浮动射流速度或浸没式旋转射流在大型原油储罐中防止污泥的作用。在二维CFD模型中使用Euler-Euler方法来描述储油罐底部的油和污泥流动行为。通过修改一些参数,使用k-e模型来描述混合流的湍流。结果表明射流速度,角度和时间对混合过程的影响。通过从5 m s–1提高速度,混合模式会显着改变并改善污泥与原油的混合。为了评估结果,选择了与样品池底部相关的污泥轮廓,建模结果显示,污泥厚度减少了80 cm,这与池底部的轮廓非常吻合。此外,y +轴表示所有点的数量均小于300,这在两阶段建模中是可以接受的。本作品是根据Creative Commons Attribution 4.0国际许可使用许可的。
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