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Modeling and Simulation of Mass Flow Measurement Process by TDLAS

Based on the mass flow measurement by tunable diode laser absorption spectroscopy (TDLAS), the process of air flow measurement was modeled and simulated. Using the Gridgen software, we drew the model inlet grid. And we used fluid calculation program to calculate gas condition in the inlet model. Under the set conditions, we got the mass flow of the model. Compared the mass flow which is measured by the TDLAS technology with the calculated data, we can obtain the measurement accuracy of TDLAS.