Modelling and simulation of flow through a flowbench

our aim is to perform a simulation on a flow bench

first, a grid dependency test is done, i.e., simulation has done with a valve lift of 0.004m with a mesh size of 3, 4 and 5.

1) For a grid of 3

pressure plot

velocity plot

2) For a grid of 4

pressure plot

velocity plot

3) For a grid of 5

pressure plot

velocity plot

and the mass flow rates as follow

since for more finer mesh we get a more accurate result, we will continue taking mesh refinement of 5 to study the mass flow rate depending upon the valve lift.

For valve lift of 2mm

For valve lift of 3.33333mm

For valve lift of 4.666mm

For valve lift of 6mm

if we put a graph between the valve lift and the mass flow rate we can get a better comparison

we can easily tell from the graph that with an increase in valve lift the mass flow rate also increases.

also there is a limit to which the valve can be if we go beyond that point the solver will consider as there is no valve at all ( in this case my maximum valve lift that can be done seems to be 6mm) and you will get a plot like this