  Azimuthal distributions of radial velocities of charged hadrons produced in
nucleus-nucleus $(AB)$ collisions are compared with the corresponding azimuthal
distribution of charged hadron multiplicity in the framework of a multiphase
transport (AMPT) model at two different collision energies. The mean radial
velocity seems to be a good probe for studying radial expansion. While the
anisotropic part of the distributions indicates a kind of collective nature of
radial expansion, the isotropic part characterizes a thermal motion. The
present investigation is carried out keeping the upcoming Compressed Baryonic
Matter (CBM) experiment to be held at the Facility for Anti-proton Ion Research
(FAIR) in mind. As far as high-energy heavy-ion interactions are concerned, CBM
will supplement the Relativistic Heavy Ion Collider (RHIC) and Large Hadron
Collider (LHC) experiments. In this context our simulation results at high
baryochemical potential would be interesting, when scrutinized from the
perspective of almost a baryon free environment achieved at RHIC and LHC.
