Energy

Improving fan efficiency with design exploration

Turbomachinery forms an essential part of many mechanical equipment systems and accounts for a significant portion of global industrial energy usage. Not surprisingly then, engineers are constantly searching for innovative ways to increase the efficiency of these power transmission devices.

This presentation illustrates a new and completely automated workflow for discovering better turbomachinery designs faster through the combined use of three best-in-class engineering design & simulation software products: TURBOdesign 1 (TD1) STAR-CCM+ and HEEDS.

Specifically:

Transient analysis of the Francis-99 hydroturbine

Simulation of the Francis-99 hydroturbine is presented with correlation to experimental data. The virtual model of the hydroturbine accurately models the unsteady nature of the flow-field at the best operating point (BEP), part load (PL) and high load (HL) conditions. Global predictions such as efficiency, net head and discharge correlate well with experiment. Additionally, local velocity profiles in the runner agree well with experimental PIV measurements. Vortex rope characteristics are discussed for each of the operating points.

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