  The universe content is considered as a non-perfect fluid with bulk viscosity
and can be described by a general equation of state (endowed some deviation
from the conventionally assumed cosmic perfect fluid model). An explicitly bulk
viscosity dark energy model is proposed to confront consistently with the
current observational data sets by statistical analysis and is shown consistent
with (not deviated away much from) the concordant $\Lambda$ Cold Dark Matter
(CDM) model by comparing the decelerating parameter. Also we compare our
relatively simple viscosity dark energy model with a more complicated one by
contrast with the concordant $\Lambda$CDM model and find our model improves for
the viscosity dark energy model building. Finally we discuss the perspectives
of dark energy probes for the coming years with observations.
