  We develop a new integrated dynamical model to investigate the effects of the
hydrodynamic fluctuations on observables in high-energy nuclear collisions. We
implement hydrodynamic fluctuations in a fully 3-D dynamical model consisting
of the hydrodynamic initialization models of the Monte-Carlo
Kharzeev-Levin-Nardi model, causal dissipative hydrodynamics and the subsequent
hadronic cascades. By analyzing the hadron distributions obtained by massive
event-by-event simulations with both of hydrodynamic fluctuations and
initial-state fluctuations, we discuss the effects of hydrodynamic fluctuations
on the flow harmonics, $v_n$ and their fluctuations.
