Grashof's Conditions for Five-bar Linkage 平面五杆机构的尺度分析
The investigation shows that either of the two Grashof number adjustment methods has its advantages and disadvantages. 通过对减压法和缩小尺寸法这两种Gr数调整技术的分析表明,两种方法各有优缺点,因而适用于各自不同的工况。
The results show that the convective accelerometer can achieve good linearity when the Grashof number ranges from 10-2 to 103. Temperature sensor position has obvious influence on the device's sensitivity; 温度传感器的位置对器件的灵敏度影响较大,当位于0.3倍的腔体半长位置时其线性度和灵敏度均较好;
The numerical results show that the flow state is not only related to Grashof number but also the ratio of the melt height to the crucible radius. 数值结果表明熔体的流动状态不仅与熔体的Gr有关,还与熔体高度和坩埚半径的比值密切相关。
In order to simulate the fluid flow and heat transfer of a space station cabin on the ground, both theoretical and numerical analysis has been carried out, and two methods to adjust the Grashof number to suppress the natural convection have been discussed. 为在地面模拟太空舱内的流动与换热,通过理论分析和数值模拟,讨论了通过改变Gr抑制自然对流、实现地面相似模拟的两种方法的可行性。
The results show that the Grashof number and Richardson number have influence on the flow level and temperature level. The correlations of local and average Nu numbers are also given. 讨论了Gr数及Ri数对流场及温度场的影响,给出了当地及平均Nu数的变化规律。
Different Grashof number and Reynolds number were considered and the different flow patterns and heat exchange were presented respectively. 文中对不同的格拉晓夫数、雷诺数进行了数值模拟。
Important Stretching of Grashof Theorem Grashof定理的重要推广
Therefore, it can be applied to research the natural convection problems with high Grashof number within the laminar flow. 因此,该方法可适用于高Ra数的层流自然对流问题的研究。
Grashof number adjustment technique to suppress natural convection 抑制自然对流的Gr数调整技术
Eicosane and carbon nanotubes were chosen as the phase change material and filler, respectively. The effects of three different Grashof numbers were studied. 计算中以正二十烷为相变材料,碳纳米管为填料,考虑了3种不同格拉晓夫数的影响。
Then the settling velocity of the particle changes its direction and the particle will move up when the Grashof number continues to increase. 当Grashof数继续增大时,颗粒先向下沉降,然后改变速度方向,向上运动。