A simplified one-dimensional (1D) simulation model has been elaborated in AMESim environment,
which is capable of analyzing and predicting the flow characteristics of small electropneumatic
(EP) valves within a wide range of pressure ratios. The flow coefficient in the model
has been identified on the basis of experiments and was compared with the Perry model.
The flow coefficient values have been successfully reproduced by axisymmetric quasi-3D
(Q3D) computations using the FLUENT code. A number of different geometries were analyzed
to determine the correlation between the geometry and the flow coefficient.