  The (3+1) dimensional expansion of the quark gluon plasma (QGP) produced at
finite baryon density has been studied using relativistic hydrodynamical
approach. The pressure functional of the equation of state (EoS) has been
determined for the interacting nuclear matter with mesons exchange. The EoS has
been used to solve hydrodynamical equations using RHLLE algorithm. The space
time expansion of the plasma has been studied for the cases of SPS energy and
RHIC energy both at finite baryon density and for a hypothetical case of SPS
energy at zero baryon density. The space-time evolution is slowed and the life
times of QGP and mixed phases are shortened in the presence of finite baryon
density. The space time integrated total photon yields have been estimated by
convoluting the static emission rates with the space time expansion of the
plasma. It has been shown that the total photon yield at zero rapidity is not
significantly affected by the baryon density for SPS energy. The total photon
yield is unaffected by the Landau-Pomeranchuk-Migdal effect at SPS energy at
zero baryon density, as the quark matter contribution to photon yield is less
compared to hadronic matter.
