We analyzed the radial evolution of solar wind in the inner heliosphere using nonlinear time series tools such as correlation dimension \(D_{2}\), correlation entropy \(K_{2}\) and multifractal analysis, to get information regarding the inherent nonlinearity associated with the solar wind data and to know how it is affected by the radial distance from the Sun. Our study provides some detailed information regarding the change of dynamics of the fast solar wind with radial distance in the inner heliosphere, apart from confirming the previous observation about the chaotic nature in the dynamics of the slow solar wind. Also we found that the fast wind in the inner heliosphere is dominated by stochastic fluctuations. As the wind is flowing radially away from the Sun, stochastic fluctuation in the fast wind decreases. The stochastic fluctuation present in the data is a clear indication of the Alfvénic fluctuation associated with the solar wind. Finally, our analysis suggests that Alfvénic fluctuation strongly influences the solar wind as it flows radially outwards to mask the nonlinear component associated with the fast wind.

我们使用非线性时间序列工具（如相关维\（D_ {2} \），相关熵\（K_ {2} \）分析了内部太阳圈中太阳风的径向演化以及多重分形分析，以获取有关与太阳风数据相关的固有非线性的信息，并了解它如何受到距太阳的径向距离的影响。我们的研究除了证实先前关于慢太阳风动力学中的混沌性质的观察结果以外，还提供了一些有关快速太阳风动力学在内部日球层中随径向距离变化的详细信息。我们还发现，内部日球层的快速风主要受随机波动的影响。随着风向径向远离太阳流动，快速风中的随机波动减小。数据中出现的随机波动清楚地表明了与太阳风有关的阿尔法夫尼克波动。最后，