verification of the performance of the paddle wheel swirl meter using numerical simulation and experimental test

Considering the importance and the effect of the rotating flows inside the cylinder on the performance of internal combustion engines and the direct effect of these flows on reducing the amount of greenhouse gas emissions and reducing fuel consumption, it is essential to investigate the characteristics of these flows. therefore, the issue of ensuring the performance of the swirl meters and the accuracy of the results obtained from the measurement becomes essential. due to the lack of a specific and standard reference and the loss of performance of the swirl meter over time, it is necessary to have a method and means for its verification and calibration. the present study was carried out to validate the performance of the paddle wheel swirl meter and design a new and easy method for its calibration. the results simulation performed by the dynamic mesh method are very close to the results obtained from the experimental test and have high accuracy, because it directly simulates the performance of the paddle wheel swirl meter, but on the other hand, it requires a very high computational cost. according to the results obtained from the numerical solution and experimental test, the simultaneous use of the calibration equipment along with the correlation relationship is suggested as a fast and high-precision method.