纵向波纹通道内充分发展层流传热的近似解

对两纵向波纹平板形成的通道内的定热流边界条件下的传热，采用一级摄动，以壁面波纹的波幅为摄动小量建立模型．将一级摄动温度分作两个线性叠加的部分，分别求解，得到了温度以及传热特性的渐近解．据此研究了传热特性与壁面波纹特性的关系．研究发现，壁面波纹本身以及两板波纹的组合都对这种情况下的壁面传热特性产生着多重影响．

An Approximate Analytic Solution to the Fully Developed Laminar Heat Transfer inside a Longitudinally Wavy Channel

A theoretical study of fully developed laminar heat transfer inside a channel made of two parallel wavy plates and with constant wall heat flux was conducted through perturbation on the amplitude of the wall surface wave. The energy equa- tion was resolved at leading approximation by lineally separating the first order temperature into two parts. An asymptotic solution to the heat transfer was then obtained. The effects of the wavy channel walls on the heat transfer characteristics were discussed. The conclusion is that both the wall waves and their combinations play a dramatic role in the heat transfer behavior.