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KBrO_3-Na_2SO_3-K_4Fe(CN)_6体系pH振荡影响因素研究 被引量:4
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作者 杨珊 侯玉龙 胡道道 《西北大学学报(自然科学版)》 CAS CSCD 北大核心 2014年第5期756-761,765,共7页
研究影响KBrO3-Na2SO3-K4Fe(CN)6(BSF)体系pH振荡行为的各种因素。通过测试BSF体系在封闭条件下和在连续流动搅拌反应器(CSTR)中反应的pH-时间曲线,考察温度、流速、酸度、搅拌速率等因素对BSF体系pH振荡行为的影响。测得振荡反应的正... 研究影响KBrO3-Na2SO3-K4Fe(CN)6(BSF)体系pH振荡行为的各种因素。通过测试BSF体系在封闭条件下和在连续流动搅拌反应器(CSTR)中反应的pH-时间曲线,考察温度、流速、酸度、搅拌速率等因素对BSF体系pH振荡行为的影响。测得振荡反应的正反馈、负反馈及周期的表观活化能分别为57.21 kJ/mol、78.63 kJ/mol和32.08 kJ/mol。在CSTR条件下,温度、流速、酸度、搅拌速率等皆对振幅和周期有较明显的影响,且在一定范围内皆与周期和振幅的变化存在一定的线性关系。该研究建立了多因素与振荡行为之间的规律,对于研究其他振荡体系有一定的参考价值,同时为以pH振荡为刺激源的智能材料选择适当的振荡条件提供了理论依据。 展开更多
关键词 pH振荡反应 溴酸盐-亚硫酸盐-亚铁氰化物体系 振荡影响因素
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Function chain neural network prediction on heat transfer performance of oscillating heat pipe based on grey relational analysis 被引量:12
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作者 鄂加强 李玉强 龚金科 《Journal of Central South University》 SCIE EI CAS 2011年第5期1733-1737,共5页
As for the factors affecting the heat transfer performance of complex and nonlinear oscillating heat pipe (OHP),grey relational analysis (GRA) was used to deal with the relationship between heat transfer rate of a loo... As for the factors affecting the heat transfer performance of complex and nonlinear oscillating heat pipe (OHP),grey relational analysis (GRA) was used to deal with the relationship between heat transfer rate of a looped copper-water OHP and charging ratio,inner diameter,inclination angel,heat input,number of turns,and the main influencing factors were defined.Then,forecasting model was obtained by using main influencing factors (such as charging ratio,interior diameter,and inclination angel) as the inputs of function chain neural network.The results show that the relative average error between the predicted and actual value is 4%,which illustrates that the function chain neural network can be applied to predict the performance of OHP accurately. 展开更多
关键词 oscillating heat pipe grey relational analysis fimction chain neural network heat transfer
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