给出了振荡热管的径向和轴向当量导热系数；
The equivalent thermal conductivity of oscillating heat pipes in radial and axial direction was presented.
在热声发动机系统中，回热器的振荡换热是沿流体通道的轴向，而加热器振荡换热主要是沿流体通道径向。
In thermoacoustic system, the oscillating heat transfer in regenerator is along the axis direction of the stack and in heat exchanger it is along the radial direction of the tube.
给出了问题径向正解的非存在性，解的振荡性及有界性的充分条件，并对有界解进行了估计。
The nonexistence theorem of radial positive solution, sufficient conditions of oscillation and boundedness of radial solution and estimation for bounded solution are given in this paper.
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