船舶油水代换系统扩散管设计及分析  

Design and Analysis of Diffusion Tube for Oil-water Replaceable Ship System

作　　者：万新斌[1] 钱玮翔 杨铭 杨卫英[1] 张宇伦 WAN Xin-bin;QIAN Wei-xiang;YANG Ming;YANG Wei-ying;ZHANG Yu-lun(Marine Design and Research Institute of China,Shanghai 200011,China;Faculty of Engineering,China University of Geoscience(Wuhan),Wuhan 430074,China)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011 [2]中国地质大学(武汉)工程学院,武汉430074

出　　处：《船海工程》2025年第2期117-121,130,共6页Ship & Ocean Engineering

基　　金：中央高校基本科研业务费专项资金(162301222607,162301212668);国家资助博士后研究人员计划C档(GZC20241593);湖北省博士后项目(2024HBBHCXA090)。

摘　　要：针对油水代换过程中扩散管海水射流流速过高可能会导致油水掺混和泥沙携带,进而影响油水代换系统可靠性的问题,研究不同型式、孔径的扩散管出流特性及其对代换过程影响。采用CFD局部物理模型分别对4种型式扩散管的出流速度场进行仿真计算,并分析4种方案的射流特性。结果表明,孔径取30 mm时,出口流速距底面约15 mm时减速到0.2 m/s;4种扩散管方案中T型长扩散管方案射流性能最佳,单孔最高流速0.297 m/s,平均流速标准差0.0672,流速分布最为均匀。最后通过缩尺模型试验验证了T型长扩散管在实际代换系统中的扩散稳定性及可靠性。Seawater and sediment may mix into the oil if the diffusion jet velocity is too high,which decreases the reliability of oil-water replaceable system.In order to solve the problem,the influence of tube type and hole diameter on jet characteristics and replaceable process was researched.The local CFD model was used to calculate and analyze the outflow velocity distribution and jet characteristics of 4 different diffusion tubes.The results showed that when the diameter of diffusion hole comes to 30 mm,the jet velocity decreases to 0.2 m/s when it is 15 mm from the bottom;the T-type long diffusion tube shows the best performance,the highest outlet velocity of single hole is 0.297 m/s and the standard deviation of average outlet velocity in 0.0672,which shows the best consistency.Finally,the stability and reliability of T-type long diffusion tube was verified through the scaled oil-water replaceable system experiment.

关 键 词：油水代换 扩散管 局部物理模型 射流特性 

分 类 号：U664[交通运输工程—船舶及航道工程]