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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: J Comput Phys. 2015 Oct 1;298:446–465. doi: 10.1016/j.jcp.2015.05.049

Fig. 6.

Fig. 6

Schematic (not drawn to scale) of the computational domain consisting of the elastic esophagus and a viscous fluid. The elastic esophagus, a cylindrical tube with its top end fixed, is immersed in the background fluid in our 3D computational model. The upper esophagus is initially filled with a bolus, and the lower part is filled with a thin liquid layer in the lumen. Traction-free boundary conditions are applied to all surfaces of the rectangular computational domain.