  In this work, we study the two-particle correlations regarding a peripheral
tube model. From our perspective, the main characteristics of the observed
two-particle correlations are attributed to the multiplicity fluctuations and
the locally disturbed one-particle distribution associated with hydrodynamic
response to the geometric fluctuations in the initial conditions. We
investigate the properties of the initial conditions and collective flow
concerning the proposed model. It is shown that the experimental data can be
reproduced by hydrodynamical simulations using appropriately constructed
initial conditions. Besides, instead of numerical calibration, we extract the
model parameters according to their respective physical interpretations and
show that the obtained numerical values are indeed qualitatively in agreement
with the observed data. Possible implications of the present approach are
discussed.
