Valve, Fluid, Structure, interaction, Stress
The valves are responsible for controlling the systems of suction and discharge of reciprocating compressors, for this reason they are considered the principal components of the manifold subsystem. Although usually the valves present a simple geometry, these components are difficult to design, because they involve a nonlinear analysis, and stochastic events need to be considered to succeed in your project. Among other care that the engineer should take, the bending stress levels developed during operation of the compressor have very importance. The purpose of this paper is to show the correlation between the application of the numerical method known as FSI (fluid structure interaction) and the experimental strain gage method, for the bending stresses analysis in the suction valve of a reciprocate compressor with variable capacity . During the experimental phase the conditions that reproduce the compressor application are mapped by varying the pressure in the suction and the discharge line. Thus the bending stresses in the suction valve are registred. The same pressure variations are imposed on the FSI numerical model and then the results for bending stress are compared with the experimental method.