|
位置：首页 >> 期刊文章
|
|
摘要：
|
|
管道输沙阻力损失计算是江河湖泊、港口航道疏浚工程中的一个基本问题,它是设计管道浆体输送系统的重要参数,直接关系到动力设备的选型和运行的能耗。文章重点以疏浚工程中泥沙的输送为研究对象,对管内两相流动的阻力特性及临界流速问题进行了初步研究,并实验研究了泥沙在不同的浓度和速度下的阻力特性,对3种模型的阻力损失计算模型进行了检验、分析和评价。结果表明Jufin&Lopatin是一个比较好的计算模型。对于颗粒的不均匀性的影响,科学的方法能提高计算模型的计算精度。
|
|
Calculation of flow resistance is an essential question in dredging in rivers,lakes,harbors and waterways.It is an important factor for designing the sediment transport system via pipelines and it has direct bearing on the selection of utility equipment and the energy consumption in operating the equipment.This paper focuses on sediment transport in dredging works and studies the flow friction head loss and the deposition limit velocity in the pipelines.It also studies through experiments the flow resistance with different concentration and flow velocity.Three computational models for the flow resistance are verified,analyzed and evaluated.The calculated results show that Jufin & Lopatin Model is a good computational model.For the influence of non-homogeneity of grains,scientific methods can improve the precision of the computational models.
|
|
基金项目：
|
|
|
|
作者简介：
|
|
|
|
参考文献：
|
|
[1]布雷(英.)疏浚工程手册[K].上海:上海航道局,1882.
[2]上海航道局.疏浚技术培训教材[M].上海航道局,2000.
[3]天津航道局.疏浚技术[M].天津:天津航道局,2001.
[4]胡寿根,秦宏波,白晓宁,等.固体物料管道水力输送的阻力特性[J].机械工程学报,2002.38(10).
[5]Durand R,Condolios E.Transport hydraulique et decanta-tion des materiaux solides[J].Deuxiemes Journees del'Hy-draulique,1952,(9):27-55.
[6]Jufin A P,Lopatin N A.O projekte TUiN na gidrotransportzernistych materialov po truboprovodam[M].Gidrotech-niceskoe Strojitelstvo,1966:49-52.
[7]Wilson K C,Addie G R,Clift R.Slurry Using CentrifugalPumps[M].Elsevier Science Publishers Ltd,1992.
[8]Wilson K C.Hydrotransport seminar Back to Basics-Withthe Experts[M].BHRG Cranfield,UK,1996.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
|