M. Asif, S.S. Ali, B.H. Hameed
King Saud University, Saudi Arabia
pp. 357 - 359
Keywords: attennuation, disturbance, pressure drop, packed bed
The attenuation of disturbances and shocks is quite important as well as challenging task in a variety of situations. In the present work, the attenuation of disturbance through a packed bed of ultrafine nano-powder that possesses a high degree of void fraction is investigated. Using fast response pressure transducer of response time of 1 ms, both global and local pressure transients were monitored while the packed bed was subjected to flow pulsation of different frequencies. While the local pressure transients show a ten-fold increase in the pressure signal due to the velocity disturbance, the global pressure transients are however quite subdued hardly showing a two-fold increase than that recorded for the steady state pressure drop case. This aspect of the packed bed of nano-powders can be effectively utilized for the attenuation of disturbances.