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요약정보
考虑泥浆流变特性的挖泥船黏土绞刀施工数值研究
Resource Type
Academic Journal
Authors
武永顶
;
胡京招
;
郭涛
;
曹蕾
Source
工程机械 / Construction Machinery and Equipment
. 53(12):27-31
Subject
疏浚
非牛顿体模型
黏土模型
黏土绞刀
流场分析
Language
Chinese
ISSN
1000-1212
Online Access
Find it @ DONGA
초록
为研究在黏土环境中,挖泥船的绞刀转速和横移速度对黏土挖掘的影响,考虑黏土-水泥浆流变特性,引用Her-schel-Bulkley非牛顿体模型,使用流体力学分析软件ANSYS CFX,对绞刀黏土挖掘过程的流场以及绞刀性能进行数值预测,得到绞刀在挖掘黏土过程中绞刀黏土体积分数变化情况.结果表明,Herschel-Bulkley非牛顿体模型较为有效地表现了黏土不易混合为均质流体、结块、沉积等特性;分析不同施工工艺下的绞刀性能,发现绞刀在横移速度0.25 m/s、转速30 m/s时,吸口平均浓度最高,体积分数可达31.8%,但考虑能耗因素,横移速度0.25 m/s、转速25 m/s的施工参数下,比能耗最低,更具备经济性.
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