We study the origin of directed flow charged particles produced in relativistic heavy-ion collisions. Three different initial conditions, Boz$\dot{\textrm{e}}$k-Wyskiel, CCNU and Shen-Alzhrani, energy density distributions are coupled to (3+1)-dimensional viscous hydrodynamic model CLVisc, their effects on development anisotropic medium geometry, pressure gradient radial systematically compared...
