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During the injection of CO2 into coalbed for geologic sequestration, CO2 is likely both adsorbed and dissolved in coals, and swells them slightly. When coal is swollen due to the adsorption and dissolution, the induced strain is relieved as the coal structure rearranges to a lower free energy state, causing coal damage and resulting in permeability change. This adsorption- and dissolution- induced...
Two distinguishing features, inclining backward rotor disk and unpowered rotor, make fluid field of autorotating rotor in gyroplane level flight different from helicopter rotor in forward flight. Unsteady flow past autorotative rotor in gyroplane level flight is time-accurately simulated by solving URANS based on multi-block structured grid. The methods of the sliding mesh and the Full-Approximation...
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