發(fā)布時間：2018-04-23 04:02

  本文選題：儲能 + 冰漿��； 參考：《中南大學學報(自然科學版)》2017年05期

【摘要】：為研究攪拌作用下冰漿存儲過程中冰晶粒徑演化的規(guī)律,基于冰晶動力學事件核模型,利用Fluent軟件、耦合多相流模型與數(shù)群平衡模型對冰漿存儲過程中冰晶粒徑演化進行模擬,將平均粒徑模擬值與實驗值進行對比分析,并對模型有效性進行驗證。基于修正的冰晶動力學事件核模型對攪拌作用下冰漿存儲過程中的冰晶粒徑演化進行模擬,分析單螺旋槳槳葉直徑及位置、雙螺旋槳槳葉間距對冰漿存儲過程中冰晶體積分數(shù)分布、冰晶粒徑數(shù)量密度分布及冰晶平均粒徑演化的影響。研究結(jié)果表明:槳葉直徑對冰晶體積分數(shù)分布、冰晶粒徑數(shù)量密度分布及冰晶平均粒徑均有影響;槳葉間距對冰晶體積分數(shù)分布影響顯著;雙螺旋槳能夠使蓄冰槽內(nèi)冰晶分布更加均勻,更能抑制冰晶粒徑增長。
[Abstract]:In order to study the evolution law of ice grain size in ice slurry storage process under agitation, based on ice crystal kinetic event kernel model, the ice grain size evolution in ice slurry storage process was simulated by using Fluent software, coupling multiphase flow model and number group equilibrium model. The simulation value of average particle size is compared with the experimental value, and the validity of the model is verified. Based on the modified ice crystal kinetic event kernel model, the ice grain size evolution in ice slurry storage process under agitation is simulated, and the diameter and position of single propeller blade are analyzed. The effect of propeller blade spacing on the distribution of volume fraction of ice crystal, the distribution of particle size number density and the evolution of ice crystal average particle size during ice slurry storage. The results show that the blade diameter has an effect on the ice crystal volume fraction distribution, the ice grain size number density distribution and the ice crystal average particle size distribution, and the blade spacing has a significant effect on the ice crystal volume fraction distribution. The double propeller can make the ice crystal distribution in the ice storage tank more uniform and restrain the increase of ice grain size.
【作者單位】： 中南大學能源科學與工程學院;湖南省建筑節(jié)能與環(huán)境控制關(guān)鍵技術(shù)協(xié)同創(chuàng)新中心;
【基金】：國家自然科學基金資助項目(51376198) 湖南省自然科學基金資助項目(11JJ22029)~~
【分類號】：O359

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