Article ID: 19-08DC_EM_OA
The objective of this study is to investigate the effect of frequency of acoustic wave on the adsorption enhancement. Experimental measurements were conducted, which results were analyzed to derive the condition of acoustic wave in which the adsorption rate is increased. 3 cases with different frequency which corresponding to the resonance mode indicated that the enhancement rate would depend on the frequency. It was also found that the critical velocity amplitude of the acoustic wave above which the enhancement effect was observed would increase as the frequency is higher. The authors proposed a model that the enhancement effect occurs when the effective displacement amplitude of the oscillation flow is larger than the certain value. Mathematical analysis of the model suggested the critical velocity amplitude would be expressed in a linear function with the frequency, which was verified based on the observation of the experimental results. It revealed that the mechanism of the enhancement effect would be explained by the model.
