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Each slug is modeled as a single-phase flow domain.
The flow domain near drillpipe is rotating with a certain speed to simulate the pipe rotation effect, and the outer flow domain is static.
Figure 2 shows head variation with the number of nodes of the flow domain.
Let (Omegasubsetmathbb{R}^{3}) be the flow domain with boundary ∂Ω, (overline{Omega}=OmegacuppartialOmega).
As expected it is high at the injector and moderate in the remaining flow domain.
Fig. 7 Schematic of the flow domain, mesh, and boundary conditions for the simulations.
Open image in new window Fig. 5 Nodal points in the flow domain.
In addition, inner flow domain transfers pressure, velocity, cuttings concentration, and other parameters through interface.
The presented flow domain distributions give a good understanding about their physical process.
Velocity distribution, pressure contours, output torque within the flow domain were also characterized.
Boundary conditions of the flow domain and initial conditions are associated with this system of equations.
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