Abstract
A measurement-integrated simulation (MI simulation) is a SIMPLER-based flow simulation scheme modified by adding a feedback signal proportional to the difference between the simulation and the real flow. MI simulation has been in practical use, however, a general theory of MI simulation has not been established. In this study, numerical experiment was performed for MI simulation of turbulent flow in a square duct to obtain fundamental knowledge in constructing a general theory. MI simulation applying feedback at one grid point revealed that the effect of feedback propagates sharply in the downstream direction. As a result, MI simulation applying feedback at the grid points on every twentieth plane in the x_1 direction still reduces the error by a factor on the order of 10^<-4> at some feedback gain, while MI simulation with the feedback on the planes skipped in the x_2 direction requires ten times more planes to achieve the same reduction rate.
