Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.
Wire-screen mesh is normally used for the removal of
particles from a liquid stream. Here we consider a system
where fluid passes wire-screen mesh perpendicularly. The
configurations of wire-screen mesh such as diameter and shape
factor of wire affect the stream of fluid going through the
screen. In this study, we performed a theoretical approach to
the relation between wire mesh and fluid stream with
computational fluid dynamics (CFD). FLUENT is used for the
simulation. Head loss can be estimated by Rose equation when
the stream passes through the wire-mesh (Rose 1945). The drag
coefficient (CD) varies with the stream types. The other
parameters depend on a specific mesh, velocity and pressure.
In the experiment we used a screen of 50 mesh-size and water
as a fluid. The pressure drop during water flow was determined.
The average and maximum velocities of water were calculated.
On the basis of these values, we derived a proportional factor
between the velocity of fluid and head loss that can estimate
CD.
