Authors: Kalpa Henadhira Arachchige (Department of Physics & Applied Physics, University of Massachusetts Lowell, USA), Ofer Cohen (Department of Physics & Applied Physics, University of Massachusetts Lowell, USA)

The presence of many adjustable free parameters in solar wind models can be a significant challenge, especially when trying to select the most suitable values for them under various solar conditions. In this study, we consider the two vital free parameters of the Alfvén Wave Solar Atmosphere Model (AWSoM-R) within the Space Weather Modeling Framework (SWMF), namely the Poynting flux to magnetic field ratio (S_A/B_⊙) and the transverse correlation length of the Alfvén waves perpendicular to the magnetic field (L_⊥√B). Adjusting these two free parameters is essential to ensure the model reproduces observed solar wind conditions in a good agreement at 1~au. The AWSoM-R considers the Alfvén wave turbulence the primary driving agent to accelerate and heat the solar wind. At the same time, the free parameters, S_A/B_⊙, quantifies the solar wind energization, and L_⊥√B quantifies the wave dissipation. By fitting these two parameters to a six-order polynomial function based on a model for sunspot number, the study provided steady-state simulations of the solar wind at 1~au within the solar cycle 24. The findings of this research enhance our understanding of the role of Alfvén waves in solar wind heating and acceleration and hold the potential for improved solar wind predictions during different phases of an entire solar cycle.