Physical and computer models are used to establish baseline flow patterns and to evaluate potential method for flow redistribution. This capability is useful when a unit is unavailable for testing or the cavity geometry does not lend itself to standard corrective measures.
The figures at right show a cavity that has highly centrifugal flow with significant flow separation to the rear (left side) wall. In this case, both gas and ash need to be redistributed with flow modification vanes. The net result is reduced fly ash erosion potential at the Economizer Bank inlet, reduced O&M cost and pressure part failures, and improved unit availability.
DE uses the ANSYS-FLUENT CFD code for computer modeling and collaborates with other independent laboratories for both physical and computer modeling.