عنوان مقاله [English]
In this paper, the performance of a of diaphragm dosing pump is simulated with fluid-structure interaction analysis. The simulation results are validated with experimental data . Performance simulation of the diaphragm pump for the diaphragm oscillation period of 1 second and three different diaphragm amplitude of 0.8, 0.5 and 0.2 mm, shows that as the amplitude increases, the flow rate of the pump increases. So that the average flow rate of the pump in the mentioned amplitudes is equal to 0.002, 0.0013 and 0.0005 kg/s, respectively. As the amplitude increases from 0.2 to 0.8 mm, the maximum stress applied to the diaphragm increases from 32.2 to 99.2 MPa (equivalent to 208%). Also, the effect of diaphragm oscillation frequency on pump performance is investigated and the results show that flow rate of the pump has a direct and linear relation with the diaphragm oscillation frequency, while the applied stress on the diaphragm is not frequency dependent . According to the results, if the pump amplitude is set to 0.5 mm and the frequency is 1.6 Hz, instead of operating at a diaphragm amplitude of 0.8 mm and a frequency of 1 Hz, the flow rate of the pump will be exactly the same. While the maximum amount of stress in the diaphragm will be reduced by about 30% and the probability of damage will be reduced.