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V-funnel simulation
Test setup and Geometry
V-funnel problem is one of the first problem, that was modeled. It is focused on boundary condition influence. In it's easiest form is modeled in 2D. The geometry is shown at figure below.
On the next picture is mesh used for simulation. It is devided into two parts. Lower part is finer to improve accuracy of the flow near the neck. The mesh contains 2907 nodes and 5567 elements.
The link below contains input file of V-funnel simulation for OOFEM program. It is a text file containing specifications of about geometry (mesh), physics (constitutive model) and numerical solver.
Description of input file can be found here: Input File Description
On the video below, motion of concrete-air interface is shown. The characteristic “V-funnel time” (the time from opening the gate at the bottom to the moment when it is possible to look through the gate) is aproximately 2s.