After the thought of applying the porous medium to new super cooling technique has been validated , a study on thermally driven heat transfer in enclosure filled with porous medium in a centrifugal force field is carried out 新型超级冷却技术中应用多孔介质的想法得到验证以后,本文便对离心力场下装有多孔介质的封闭腔体内流体的流动和换热展开了研究。
The experiments shows : ( 1 ) dispersing is a prerequisite to classification ; ( 2 ) designing a powerful and steady force field is the key to classification , and ( 3 ) the guarantee to classification is to let the product be in time gotten rid of 实验表明:分散是分级的前提;设计强有力的稳定力场是分级的关键;分级产品及时排除是分级的保障。基于此,本课题研究内容分为两部分。一、解决超微颗粒的分散问题。
In this paper , the analytical method of linear stability has been applied to establish the marginal stability criterion of natural convection in porous medium , after considering the action of gravity , centrifugal and coriolis forces together in centrifugal force field 理论研究的结果表明,当离心力与温度梯度同方向时,只要满足ra > 7 . 81 2或ra0 > 4 2 ,多孔介质中即可发生离心力、重力与哥氏力共同驱动的自然对流。
They are often equipped with the most insane and diabolically dangerous gadgets their mekboys ' febrile minds can come up with , from battlewagons shielded by crackling force field generators to wings of deth - koptas , flying to battle on screeching rotor blades 从装备吱吱作响的防护力场的战斗大车,到有着呼呼飞转的剃刀旋翼的玩命直升机,暴走团的坐骑总是装备着它们的技术小子狂热的脑壳所变出来的最最疯癫险恶的配件。
We suggest to study a special kicked rotor moving in a piecewise continuous force field . when adjusting a control parameter the system displays a transition from conservative to quasi - dissipative , and a change of a stochastic web formed by the set of the images of the discontinuous borderlines to a transient stochastic web 它在一个控制参数连续改变时可以演示从分段连续保守系统向类耗散系统的连续过渡,从而展现不连续边界象集随机网向一个瞬态随机网,以及网上的无边界混沌扩散运动向局域规则运动的转变。
the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it 同义词:field, field of force