... response is near 7.6 Hz, and it is associated with the first resonance of the system as noted from the Bode plots. A second component near 22.6 Hz can be linked to the second resonance mode of the compression system, and it comes for the acoustic effects of the included pipeline dynamics in the plenum...

...S. Al-lababidi; A. Addali; H. Yeung; D. Mba; F. Khan The gas-liquid two-phase slug flow regime phenomenon is commonly encountered in the chemical engineering industry, particularly in oil and gas production transportation pipelines. Slug flow regime normally occurs for a range of pipe inclinations...