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水平自然对流
相关语句
  相似匹配句对
     Heat Transfer by Free Convection from Horizontal Elliptic Cylinder
     水平椭圆管的自然对流放热
短句来源
     NATURAL CONVECTION HEAT TRANSFER IN HORIZONTAL CYLINDRICAL ANNULI WITH DIAGONAL ECCENTRICITIES
     斜偏心水平圆柱环形空间自然对流传热
短句来源
     INVESTIGATION OF NATURAL CONVECTION PHENOMENA FROM A HORIZONTAL HEATED TUBE USING ESPI
     应用ESPI研究水平热管的自然对流现象
短句来源
     Numerical Computation of Laminar Natural Convection around a Horizontal Circular Cylinder
     绕水平圆柱层流自然对流数值模拟
短句来源
     Horizontal convection in a narrow rectangular cavity
     水平自然对流中流量和热通量的研究
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  horizontal convection
It is suggested that the observed irregular motions in prominences are driven by photospheric horizontal convection coupled by the prominence magnetic field.
      
At the lateral box walls a different non-uniform temperature distribution is assumed so to induce horizontal convection and to keep separated thermocapillary and buoyancy effects.
      
Pendant superheater banks are located downstream of the U-beams in the horizontal convection pass.
      
The MDC is located immediately downstream of the horizontal convection pass.
      
The furnace and horizontal convection pass enclosure are top-supported and made of gas-tight membrane walls.
      


The horizontal convection,which is driven by non-uniformly heating at its upper surface,is investigated in the context of a narrow rectangular cavity with aspect ratio(height to width) of 1∶10.A stable two-cell circulation is obtained when the fluid is forced with sinusoidal distribution of temperature at upper surface symmetric about a vertical axis.The higher Rayleigh number is,the stronger the heat convection is.The convections are investigated at Prandtl number Pr=10,over 5 decades of Rayleigh number Ra...

The horizontal convection,which is driven by non-uniformly heating at its upper surface,is investigated in the context of a narrow rectangular cavity with aspect ratio(height to width) of 1∶10.A stable two-cell circulation is obtained when the fluid is forced with sinusoidal distribution of temperature at upper surface symmetric about a vertical axis.The higher Rayleigh number is,the stronger the heat convection is.The convections are investigated at Prandtl number Pr=10,over 5 decades of Rayleigh number Ra from 10~4 to 10~9.Both the flow rate and heat flux are linearly proportional to the Ra for small Rayleigh number Ra>10~6.For large Rayleigh number Ra>10~8,the flow rate is proportional to 3-th root of Ra,but the heat flux is proportional to 5-th root of Ra.

该文研究了由水平温度梯度所导致的水平自然热对流,以Pr=10的流体为例,数值模拟了在高度和宽度比为1∶10的狭长矩形腔内的流动现象。随着Ra数增加,水平自然对流的速度加快,在两侧边界附近形成强烈的下沉流和明显的速度边界层。通过对Ra数从104到109的区间内的计算结果,分段拟合出了流量、最大热通量密度和热通量随Ra数的变化规律。在低Ra数下,流量和热通量都与Ra数成线性关系;在高Ra数下,流量与Ra数的1/3幂成正比;而热通量与Ra数的1/5幂成正比。

 
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