On the basis of the classification and definitions of two regions of pressure drop oscillation in our previous work, the transient and time-averaged heat transfer characteristics of steam-water two-phase flow during the second regional pressure drop oscillation were experimentally studied in a closed circulation system with a helical coiled tube boiling channel.

Calculation and error analysis of pressure drop of gelled propellant simulants in the pipe;

Effect of pressure drop grading structure of feed nozzle for catalytic cracking process on atomization;

An experiment investigation on the pressure drop for oil drop dispersed flow through horizontal pipe;

Research on depressurization and augmented injection of petroleum sulfonate;

EOR through depressurization and augmented injection with surfactant;

Research on carried solution and pressure fall in liquid desiccant packed towers;

The craft pipeline net and devices from first-order air evacuation to second-order air admission in the compressor system at Hekou compressor station are analyzed from the aspect of pressure fall at different stages, thus finding out the key to the problem of pressure fall in compressor system.

Based on the continuity equation and the momentum equation, the pressure fall models of wellbore flow within an open-hole and a perforated completion snaky well bore are e.