哥哥喷涌而出
发表于 2025-3-28 16:26:25
http://reply.papertrans.cn/32/3109/310829/310829_41.png
Fulminate
发表于 2025-3-28 19:33:31
,The laws of black—and grey — body radiation,aces, and the presence of fluid motion. Energy transfer has been observed to take place only in the direction of a negative temperature gradient, and at a rate; which depends directly on the magnitude of that gradient.
tolerance
发表于 2025-3-29 00:57:51
Introduction,imals. The development of this skill over the centuries has been fundamental to the growth of civilization. Mans early efforts to harness the power of wind and water owed very little to engineering science, and indeed the early steam engine was a practical reality . the science of thermodynamics was
褪色
发表于 2025-3-29 05:40:43
The equations of heat conduction,e general form:.where . is the rate of heat conduction in the n-direction, and . is the temperature gradient in that direction. The partial derivative is used since there may exist temperature gradients in other directions. One-dimensional conduction does not often occur in practice since a body wou
巨大没有
发表于 2025-3-29 08:22:31
Two-dimensional steady state conduction, of edge and corner effects which must be present in any finite object. The error involved in this neglect will depend on the dimensions of the system. Consider, for example, the wall of a building some 6 m long and 200 mm thick. In the absence of doors and windows, conduction through such a wall wi
lanugo
发表于 2025-3-29 12:26:43
http://reply.papertrans.cn/32/3109/310829/310829_46.png
prolate
发表于 2025-3-29 18:51:26
http://reply.papertrans.cn/32/3109/310829/310829_47.png
符合规定
发表于 2025-3-29 19:46:50
http://reply.papertrans.cn/32/3109/310829/310829_48.png
翻动
发表于 2025-3-30 02:17:47
Natural convection,ng it is another important example of convection. Fluid motion is due entirely to buoyancy forces arising from density variations in the fluid. There is often slight motion present from other causes; any effects of these random disturbances must be assumed negligible in an analysis of the process. N
SIT
发表于 2025-3-30 06:10:11
Separated flow convection,e resulted in the rapid growth of the use of complex geometrical heat transfer surfaces, which have developed from the single tube and tube bank placed across the line of flow. A single tube or cylinder placed in a cross-flow is completely submerged in the fluid and it therefore forms an obstacle ar