本文用可控热脉冲输入临界层的方法研究了平板层流边界层的稳定性与转捩。
An experimental study on the laminar boundary layer instability and transition was carried out in a flat-plate boundary layer by means of controllable heat pulsing introduced into the critical layer.
结果表明，在大落差管道，流速不大的情况下，密度差对层流边界层影响比较明显。
The computation results showed that the effect of density differences when velocity of flow was small was obvious to the boundary of laminar flow in the elevation difference pipeline.
以此分析了炽热平板层流边界层内可燃气流的引燃，给出了描述引燃的着火临界条件。
The ignition process of combustible gas stream by a heated plate in the laminar boundary layer was analytically considered and the limits of ignition were determined.
用层流边界层方程，导出幂律流体轴对称层流自由射流的常微分方程，并给出其方程的数值解。
The ordinary differential equation of round laminar jet of power-law fluid is derived, and the solution of this equation by numerical integration is obtained.
试验研究发现明流光滑平板边界层中，与无限边界绕流平板边界层一样，沿平板有层流边界层，转捩区和紊流边界层三部分。
Like in an infinite flow, we find that laminar boundary layer, transition region and turbulent boundary layer also exist along a flat plate in open channel flow boundary layers.
边界层转捩流动的特征参数明显不同于层流或湍流，转捩流动的这些特征直接影响着流体的动力、传热特性。
The characteristic parameters of fluid during the transition in boundary layer are obviously different from that of the laminar flow or the turbulent flow.
在利用热边界层减阻的电加热管道中，为了计算管道加热的热流量，除了热边界层流动的流体传热外，还需考虑整个管道的热损失。
The many kinds of heat losses of fluid flow on the temperature boundary layer in pipeline are a part of the total heat flux.
本文利用朗之万分子动力学，数值研究粗糙固体边界层表面单层流体的脱钉特性。
Using Langevin molecular dynamics simulation, we investigate numerically the depinning dynamics of fluid monolayer at a rough solid boundary.
采用动量积分方法推出了管道流动中的速度边界层方程，给出了管道层流和紊流时速度边界层和核心区中的速度分布、边界层厚度的解析结果，并与冯。
The analysis result of velocity distribution and boundary layer thickness is put forward in the boundary layer and cored region for laminar and turbulent flow of pipeline.
场协同原理是基于稳态时层流热边界层的积分方程得到的，其正确性已得到了实验及数值验证。
Field synergy principle is based on the steady state laminar thermal boundary layer integral equations and has been validated by the experimental data and numerical simulations.
场协同原理是基于稳态时层流热边界层的积分方程得到的，其正确性已得到了实验及数值验证。
Field synergy principle is based on the steady state laminar thermal boundary layer integral equations and has been validated by the experimental data and numerical simulations.
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