Enhanced reaction kinetics and reactive mixing scale dynamics in mixing fronts under shear flow for arbitrary Damköhler numbers

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Fronts and Mixing Processes

The effects of laminar mixing on reaction fronts and patterns

A wide variety of dynamical processes are influenced by some sort of reaction. In its most general sense, a “reaction” is when some species A changes into some other species B during a process, possibly via an interaction with other species. The most obvious example is a chemical reaction, when two or more reactants interact to form a third product, e.g., A + B  C or A + B  2A. Combustion is ...

Incomplete mixing and reactions in laminar shear flow.

Incomplete mixing of reactive solutes is well known to slow down reaction rates relative to what would be expected from assuming perfect mixing. In purely diffusive systems, for example, it is known that small initial fluctuations in reactant concentrations can lead to reactant segregation, which in the long run can reduce global reaction rates due to poor mixing. In contrast, nonuniform flows ...

Single Jet Mixing at Arbitrary Angle in Turbulent Tube Flow

An asymptotic procedure is presented to evaluate the tracer trajectory in a two-stream turbulent pipe mixing unit with an oblique branch. The proposed mixing jet trajectory estimate is compared with the existing experimental data and used to calculate the critical mixing conngurations. In addition, it is shown that the well-known tracer jet proole can be recovered for the case of a normally iss...