• 边界层厚度距离板的位置关系不大

    The thickness of thermal boundary layer has little relations with the distance away from the air distribution.

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  • 常规滑模变结构控制中引入模糊控制,利用模糊控制器动态调整滑模边界层厚度

    A fuzzy control is combined with the conventional quasi-sliding mode control, and the fuzzy controller is used to adjust the thickness of boundary layer dynamically.

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  • 结果表明调节边界层厚度,可降低多孔介质传递因此可以提高管道

    The results show that the flow field can be adjusted and the thickness of boundary layer can be decreased with the porous medium so the heat transfer can be enhanced in the pipe.

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  • 对比再生冷却分析不同注入壁面温度、冷却效率以及边界层厚度影响

    The influences of porosity on the local blowing ratio, wall temperature and boundary layer thickness were compared with the effects with regenerative cooling.

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  • 底部相对间隙08~ 2 0之间,扰流片高度小于边界层厚度壁面平均压力高度大于边界层厚度时小30 %左右。

    When the relative gap height (the ratio of flap height to gap width) is in the range of 0 8-2 0, the mean pressure will reduced 30% if the flap height is smaller than the thickness of boundary layer.

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  • 这种方法使地板边界层厚度大大降低风洞仍保持好的品质流场均匀特点。

    This method can greatly decrease the boundary layer thickness on the floor, and maintain good characteristics and uniformity of the flow field.

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  • 影响边界层厚度主要因子最高地温差风速平凉白天降水量有关

    The main factors of affecting boundary layer thickness were maximum Ts-Ta and wind speed, further that of Pingliang was also related to daytime precipitation.

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  • 采用动量积分方法推出了管道流动中的速度边界层方程,给出了管道层流紊流时速度边界层核心区中的速度分布边界层厚度解析结果,并冯。

    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.

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  • 对于速度边界层提出了相似性解析结果给出了速度分布边界层厚度摩擦阻力水头损失的解析计算表达式

    Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.

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  • 大气气溶胶粒子浓度高度指数下降假定下,气溶胶标高反映了大气边界层气溶胶的特征厚度

    Depending on the assumption that aerosol concentration index decreases with the altitude increasing, the aerosol scale height indicates boundary character thickness.

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  • 估算边界层厚度测量器件设计提供尺寸约束

    The thickness of the boundary layer was estimated to propose the design constraint of the measure sensor.

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  • 结果表明,对于收扩喷管虽然其速度边界层厚度明显大于收敛喷管,但加装小突片结构能够明显强化射流混合

    It was found that the tabs fixed on C-D nozzles also enhanced the jet mixing distinctly, although the boundary layers of the jets from C-D nozzles were greater than that from the convergent nozzle.

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  • 考虑到前体壁面边界层厚度流动结构的影响,提出边界层效应的修正方法

    Taking into account the boundary layer effect on flow structure, a correct formula was given.

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  • 波浪边界层厚度提出明确定义,利用相似原理导出了波浪紊流边界层厚度的合理计算公式;

    This paper presents a precise definition of the thickness of wave boundary layer. The thickness equation of the turbulent boundary layer beneath water waves is derived by the principles of similarity.

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  • 在对边界层速度合理假设基础上,求解了动态积分方程,给出了时间空间变化边界层厚度响应函数

    The dynamical respondent functions dependent of the time and the space for the velocity boundary layer are different from the classical results.

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  • 通过大量室内实验探讨了原油边界层厚度毛管半径压力梯度流体粘度组分关系

    Through large amount of lab experiments, the relation of oil boundary layer thickness with capillary radius, pressure gradient, fluid viscosity and its composition has been discussed.

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  • 通过大量室内实验探讨了原油边界层厚度毛管半径压力梯度流体粘度组分关系

    Through large amount of lab experiments, the relation of oil boundary layer thickness with capillary radius, pressure gradient, fluid viscosity and its composition has been discussed.

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