Lee Donggeun, Kim Jae-Won, Kim Bog G
School of Mechanical Engineering and Department of Physics, Pusan National University, Busan 609-735, Korea.
J Phys Chem B. 2006 Mar 9;110(9):4323-8. doi: 10.1021/jp057225m.
Although various conjectures have been proposed to explain the abnormal increase in thermal conductivity of nanofluids, the detailed mechanism has not been fully understood and explained. The main reason is due to the lack of knowledge of the most fundamental factor governing the mechanisms such as Brownian motion, liquid layering, phonon transport, surface chemical effects, and agglomeration. Applying a surface complexation model for the measurement data of hydrodynamic size, zeta potential, and thermal conductivity, we have shown that surface charge states are mainly responsible for the increase in the present condition and may be the factor incorporating all the mechanisms as well.
尽管已经提出了各种猜想以解释纳米流体热导率的异常增加，但其详细机制尚未得到充分理解和解释。主要原因是缺乏对诸如布朗运动、液体分层、声子传输、表面化学效应和团聚等控制机制的最基本因素的了解。通过将表面络合模型应用于流体动力学尺寸、zeta电位和热导率的测量数据，我们已经表明表面电荷状态是当前条件下热导率增加的主要原因，并且可能也是包含所有机制的因素。
