Based on the heat transfer mechanism analysis and numerical simulation of the heat pipes in the enclosed air space, effects of factors such as the structure of the enclosed air space, heat reflecting film and heat pipes conditions on the heat transfer characteristics were discussed and validated by experimental results.

In this paper,a theoretical study on active control of within enclosed space surrounded by flexiblestructure is accomplished.

Based on the basic theory of ANC within the enclosed space,this paper models the enclosed space with the COMSOL software,and presents the simulation and analysis effects of noise reduction which is derived from the numbers and location of the secondary noise resources.