压载水旋流预处理单元的优化设计与数值模拟

发布时间：2018-04-11 13:59

本文选题：压载水 + 水力旋流器　；参考：《舰船科学技术》2016年05期

【摘要】：压载水管理公约D2对压载水中颗粒物粒径范围及含量做出了明确规定。为满足此规定,水力旋流器逐步开始应用于船舶压载水处理系统中。为了提高水力旋流器的分离效率,通过改变水力旋流器的入口结构对水力旋流器进行优化,即将入口结构设计为阿基米德螺线形入口来增加流体转动速度,降低能量消耗,从而提高分离效率。应用Fluent软件,结合雷诺应力模型(RSM)和混合多相流(Mixture)分析方法,对优化前、后的水力旋流器进行固-液两相流数值模拟。模拟内容包括水力旋流器内的速度分布、固相体积分数分布以及分离效率等。通过对比2种模型的模拟结果,说明优化的水力旋流器内部的流场速度以及分离效率均有一定的提高,达到了优化目的。
[Abstract]:Ballast Water Management Convention D 2 specifies the particle size range and content in ballast water.In order to meet this requirement, hydrocyclone is gradually applied to ship ballast water treatment system.In order to improve the separation efficiency of the hydrocyclone, the hydrocyclone is optimized by changing the inlet structure of the hydrocyclone, that is, the inlet structure is designed as the Archimedes spiral inlet to increase the fluid rotation speed and reduce the energy consumption.Thus, the separation efficiency is improved.Using Fluent software, combined with Reynolds stress model (RSM) and mixed multiphase flow (Mixture) analysis method, the solid-liquid two-phase flow numerical simulation of hydrocyclone before and after optimization is carried out.The simulation includes velocity distribution, solid phase volume fraction distribution and separation efficiency in hydrocyclone.By comparing the simulation results of the two models, it is shown that the flow field velocity and separation efficiency of the optimized hydrocyclone have been improved to a certain extent, and the purpose of optimization has been achieved.
【作者单位】：江苏科技大学能源与动力工程学院;
【基金】：2013江苏省产业化资助项目(BA2013065)
【分类号】：U664.92

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