Role of interfacial surfactant layers in the thermal conductivity of nanofluids
Various mechanisms and correlations have been developed for prediction of thermal conductivity ofnano-suspensions.However,seldom theoretical researches on thermal conductivity of nanofluids containing surfactant are found.In this work,a thermal conductivity prediction-model of nanofluid containing surfactants is proposed based on Leong et al.s model and Langmuir adsorption theory by considering the interfacial surfactant layers.The thickness of the interfacial layer is defined by Langmuir adsorption theory.Compared with the experimental data available in the literature on thermal conductivity ofnanofluid containing surfactants,the calculated values on the proposed model have been verified that the proposed models show reasonably good agreement with the experimental results and give better predictions for the effective thermal conductivity of nanofluids compared to existing classical models.
Thermal Conductivity Model Nanofluids Surfactant Interfacial layer
Liu Yang Kai Du Yun Long Wu Shuai Yang Bao
School of Energy and Environment, Southeast University, Nanjing, 210096, China
国际会议
广州
英文
535-538
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）