  We present an effective system for simulating dust continuum observations by
radiative transfer simulations. By using workflow management system RENKEI-WFT,
we utilized distributed computing resources and automated a sequence of
computational tasks required for radiative transfer modeling, namely, main
radiative transfer simulations, pre-/post-processes, and data transfer between
computing resources. Our system simultaneously executes a lot of radiative
transfer simulations with different input parameters on distributed computing
resources. This capability of our system enables us to conduct effective
research by radiative transfer simulation. As a demonstration of our system, we
simulated dust continuum observations of protoplanetary disk. We performed
hydrodynamic simulation modeling photoevaporating protoplanetary disk
irradiated by ultra violet radiation from nearby massive stars. Results of this
hydrodynamic simulation were used as input data for radiative transfer
simulations. Expected spectral energy distributions and intensity maps were
obtained by our system.
