The first proposals for describing the boundary layer marking the beginning of the Anthropocene are already being discussed.
描述边界层的最初的提议标志着人类世的争论的开始。
However, when the airflow is turbulent, the boundary layer sticks to the ball for longer.
然而,当气流为湍流时,边界层维持时间较长。
Most of this drag is a result of the chaotic and unpredictable nature of the boundary layer - the layer immediately between the object and the airflow.
大部分的阻力产生于混乱和不可预知的自然边界层之间在物体和气流之间。
Like carbon dioxide, black carbon absorbs sunlight and infrared radiation, trapping heat in the atmosphere — including the boundary layer closest to Earth's surface.
像二氧化碳一样,黑碳吸收阳光和红外线辐射,将热量滞留在大气中-包括最接近地球表面的边界层。
The problem is that since the increase in the gas content did not occur abruptly, there is no clearly discernible boundary layer.
问题是,气体含量的增加不是突然出现的,因此没有清晰可辨的边界层。
As a result, roughly half the fuel required to maintain a level cruise is being burned to overcome the drag imposed by a turbulent boundary layer.
因此,保持巡航速度消耗的燃料大约一半都是用于克服紊流产生的阻力。
By using the boundary Layer function method, the existence and uniformly valid estimation of the solution are given.
我们利用边界层函数法给出了解的存在性与解的一致有效估计。
If the reference separation point approaches the outlet, the test results are satisfactory, which state that the practical position of boundary layer separation point will be close to the outlet.
若分离参考点接近于出口端,则可获得满意的测试结果,这说明边界层实际分离点的位置已经很接近于叶片的出口端。
Mean velocity profile, turbulence intensity profile, integral scale and wind spectra are the most fundamental characteristics that describe the atmospheric turbulent boundary layer flow.
平均速度剖面,湍流度剖面,积分尺度和风谱是反映大气湍流边界层流动的四个最基本的因素。
A Bathypelagic Ctenophore from the benthic boundary layer, which was found attached to seafloor by adhesive tentacles.
靠带粘性的触须从底栖边界层找到的附着于海底的深海栉水母。
The dissertation developed an improved method, which is known as improved boundary layer solution, the better demand for chattering reduced and control precision can be achieved.
本文提出了一种新的抑制抖振的方法——改进型边界层法,较好地满足抑制抖振和控制精度两个方面的要求。
A lot of observational data on the atmospheric boundary layer over the plateau were obtained.
获得了大量的关于青藏高原大气边界层的宝贵资料。
The evolution of vortexes in the boundary layer are numerically simulated.
本文数值模拟了多涡结构在边界层中的非线性演化过程。
Besides, boundary layer correction has been introduced in numerical calculation through accounting for the displacement effect, so that the computational results presented are further improved.
在数值计算中,通过附面层位移厚度计算,引入了附面层粘性修正,改善了计算结果。
The measurement results show that there is really a distortional boundary layer displacement surface on the ground board, and it fully differs from natural growing boundary layer on the ground board.
测量结果表明:在地板上确实存在一个畸变的附面层位移面,它与自然增长的地板附面层截然不同。
The drag force is obtained by calculation of the momentum deficit in the wall boundary layer.
拖曳力,得到了计算的势头赤字在墙上的边界层。
It has been found that the boundary layer resistance is related with not only its thickness but also its formation process.
发现边界层阻力不仅和其厚度有关,还和其形成过程有关。
Three-dimensional turbulent boundary layer on the ground board is measured through the ground effect tests of a delta wing with aspect ratio 3.
本文通过一个展弦比为3的三角形机翼的地面效应试验,测量了地板上的三元紊流附面层。
Atmospheric boundary layer, that is, the atmosphere near the bottom of some of the ground.
大气边界层,便大气层靠远地里的底层部门。
The basic equations of the boundary layer for blade surface flow of arbitrary cyclical surface are established, and the rotating effect for boundary layer separation is analyzed.
建立任意廻转面叶片表面边界层基本方程组,分析边界层分离的旋转效应。
The present paper discuses, with the method of matched asymptotic expansions, the stress boundary layer of the slender riser in a steady flow.
本文用匹配方法讨论定常流中细长立管所产生的应力边界层现象。
Provide the experimental research scheme to measure and diagnose boundary layer of airfoil.
根据附面层流动特性,提出了附面层综合测量和诊断实验研究方案。
A method is proposed to calculated the incompressible three-dimensional turbulent boundary layer on both wall surfaces of vaneless diffusers.
提出了一种计算无叶扩压器两壁面上不可压缩三元紊流附面层的方法。
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.
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。
The basic concepts of the Marine Atmospheric Boundary Layer and the similarity theory are introduced in this study.
本论文介绍了海洋大气边界层的基本概念和相似理论。
Theory of boundary layer mainly researches the liquid in the boundary layer along the surface of an object, use a method including hydrodynamics and numerical analysis to solve the questions.
边界层理论以在流体中运动物体的表面附近的流体为研究对象,将流体力学和计算力学有机地结合起来以处理相应的问题。
This method can greatly decrease the boundary layer thickness on the floor, and maintain good characteristics and uniformity of the flow field.
这种方法使地板边界层厚度大大降低,而风洞仍保持好的流场品质及流场较均匀的特点。
The theoretical analysis and experimental results show that boundary layer separation will produce pressure drag.
理论分析和实验的结果说明:边界层分离将引起压差阻力。
With different boundary layer schemes, the simulated divergence fields differ, which affects the performance of the rainfall forecast.
不同边界层方案模拟的辐散场有一定的差别,导致了降水的不同预报效果。
With different boundary layer schemes, the simulated divergence fields differ, which affects the performance of the rainfall forecast.
不同边界层方案模拟的辐散场有一定的差别,导致了降水的不同预报效果。
应用推荐