【摘要】 本文从一套满足等离子体湍动的波一流耦合方程出发,探讨了阿尔文湍动在一径向磁流管内效应.计算出阿尔文波加热的太阳过渡区与低日冕动力学模型,它与观测事实基本相符.更多还原

【Abstract】 We investigate the effects of Alfven turbulence on a single magnetic tube by using a set of conpling equations of the flow-wave field which satisfy plasma turbulence so as to build up a dynamic model for the transition zone and inner corona. In order to simplify the problem, but not lose its physical essence, we choose some assumptions as follows: (A) In the state of one-dimension steady flow, the flowing direction is radial and outward. All its physical parameters depend only on the radial distance r. (B) The Alfén waves transmit outwards along the radial direction. (C) The axis of magnetic flux tube is radial, and the cross section area A(r) with radial distance r would be. A(r) =A [1+a(r—R)/R] where a is a constant. (D) The energy dissipation of Alfv~n wave and thermal conduction when getting in the transition zone would offset the energy loss of radiation and convection when leaving out it. (E) The solar atmosphere in the transition zone is composed of fully ionized hydrogen but with total electric neutrality and the temperature of electron is the same as that of protons. When calculating the loss of radiation energy, the contributions of eight other elements besides of hydrogen with high abnndances are also taken into account. A dynamical model for the transition zone and inner corona has been calculated and is in basic agreement with observation. Finally the effect on the model through varying boundary condition is also discussed.更多还原