热对流,又称对流传热,是指由于流体的宏观运动而引起的流体各部分之间发生相对位移,冷热流体相互掺混所引起的热量传递过程。 对流传热可分为强迫对流和自然对流。强迫对流,是由于外界作用推动下产生的流体循环流动。自然对流是由于温度不同密度梯度变化,重力作用引起低温高密度流体自上而下流动,高温密度流体自下而上流动。
热对流系统 thermosyphon ; thermo-siphon
水热对流系统 [地物] hydrothermal convection system
热对流系数 coefficient of heat convection ; coefficient of head transfer
热对流传热 heat transfer by convection ; heat convection
超绝热对流 [天] superadiabatic convection
热对流回路 thermal-convection loop ; loop thermal-convection
热对流冷却系统 thermosiphon cooling system
自然热对流 thermal natural convection ; natural thermal advection ; natural heat convection
热对流循环 thermosiphon circulation
假绝热对流 pseudo-adiabatic convection
最后,恒星大气的最外层部分是日冕,这是一个由于外层对流导致的超热区域。
Finally, the outermost part of a star's atmosphere is the corona, which if super-hot might be linked with convection in the outer layers.
对流是大气和海洋中热传输的主要方式。
Convection is the principal agent of heat transfer in the atmosphere and oceans.
结果表明,表面截割对浮区内的热毛细对流有很好的抑制作用,适当增加截割次数,可使热毛细对流削弱70 %以上。
The results show that the effective reduction can be achieved and the flow will be weaked by 70% by proper increase of the surface-cut time.
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