Effective feedback algorithm for application of MI-simulation to turbulent orifice flow

Measurement-integrated simulation (MI-simulation) is a numerical simulation in which experimental results are fed back to the simulation. The calculated values become closer to the experimental values. In this paper, we propose a new feedback method based on the conservation of momentum for MI-simulation built-in standard k-epsiv model to turbulent orifice flow. The axial velocities in simulation are compensated by using proportional controller using the estimated pressure distribution based on the conservation of momentum. The signals are fed back to the axial velocity control volumes in the cross section downstream of the orifice. The effectiveness of the method was confirmed compared with the experimental results at downstream of orifice.