Fundamentally Studies About Applying Porous Medium To A New Cooling Technique

New Super Cooling Technique based on thermally driven theory is a new kind of cooling Technique. Through former researches, the porous medium is thought can apply to New Super Cooling Technique to enhance structure strength and get better heat transfer effect. Therefore, a further study is carried out in order to seek out feasibleness of applying the porous medium to New Super Cooling Technique.Thermally driven comparison of small single-cyclic channel and small multi-cyclic channel in gravitation field is performed through experiments and numerical simulations. The results show that the change of temperature at walls of the heat end minishes and the temperature distribution uniforms with the addition of the cyclic channels. And the ratio of the circuit's height (h) to the distance between cooled and heat end (w) has effect on heat transfer. The most important result is the multi-cyclic channel has really more heat transfer effect than single-cyclic channel. Therefore, to enhance structural strength and heat transfer effect, porous medium can apply to New Super Cooling Technique instead of channels.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.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. The results show that when temperature gradients are collinear with the centrifugal force, natural convection induced by gravity,...