Predictions are made for the global polarization of $\mathrm{\Lambda }$ hyperons in $\mathrm{Au}+\mathrm{Au}$ collisions at moderately relativistic collision energies, 2.4 $\le \sqrt{s_{NN}}\le$ 11 GeV. These are based on the thermodynamic approach to the global polarization incorporated into the model of the three-fluid dynamics. Centrality dependence of the polarization is studied. It is predicted that the polarization reaches a maximum or a plateau (depending on the equation of state and centrality) at $\sqrt{s_{NN}}\approx$ 3 GeV. It is found that the global polarization increases with increasing width of the rapidity window around the midrapidity.

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• Hydrodynamic models
• Polarization phenomena
• Relativistic heavy-ion collisions