Opening the Valve to improve design - Metso Flow Control engineers
caseMetso Flow Control engineers require several weeks to build and test a new valve. Using ANSYS AIM software developed for design engineers, Metso engineers can digitally explore the performance of a new design in a frew hours. The ability to evaluate many more designs in less time makes it possible to substantially increase valve performance and get new valves to market sooner. "By Tommi Bergström, Senior Research Engineer, Metso Flow Control, Vantaa, Finland" a EDRMedeso Customer
Valves are a vital part of almost every operation that includes fluid flow. Designing valves can be quite complex because they need to operate reliably for long periods in often adverse conditions and under exacting specifications. One of the most critical
aspects of valve design is to provide a target flow rate at each point in its travel as the valve’s trim (the moving parts
of the valve in contact with the fluid) is opened or closed. The valve capacity coefficient (CV) is defined as the flow rate
in gallons of 60 F water that will pass through a valve in one minute at a 1 pound per square inch (psi) pressure drop. Metso
previously determined the CV value for any proposed valve design by building a prototype and testing with water. However, building a prototype and performing the test took about four weeks for each design iteration,and in most cases several iterations were required to hit the target specifications. Recently, Metso engineers worked with EDRMedeso, an ANSYS Elite channel partner, to adopt an ANSYS AIM solution that enables design engineers to reliably and accurately simulate the performance of a proposed design in a few hours without involving a CFD expert.
Design engineers import a valve design from CAD and spend a few minutes setting up the simulation using one of the guided
workflows in AIM. After running the simulation,AIM produces the data required to evaluate the performance of the valve.
This includes quantitative data such as pressure drop and flow rate, as well as visual information such as streamlines, contour plots and vector fields to help the engineer understand the flow behavior in the valve. Valve performance has been
improved because engineers can evaluate many more alternatives than were possible in the past, making new valves available to customers sooner.