Technical Data Report

Indianapolis, Indiana ■ IIWJW 46206-0420 USA *"""*

17 of 17

report no.

title

VBI3D Unsteady Flow Analysis of the Purdue Low Soeed Turbine Research Rig 1st Stage

prepared date

Kurt F. Weber

checked

approved

pressure determined the flow exiting the stage. (2) Flow was not conserved through the overlap or Chimera grid region. This was likely not solely because of inadequate convergence. This characteristic has been present to some degree in all VBI calculations. In addition, the combined H-grid and O-grid for the vane used 477,600 points and 397,312 for the rotor. With the current tools for O-grid generation and with the leeway to use that number of points for each blade row, a pure O-grid VBI scheme which is conservative, provides better shock and wake resolution and is easier to use could be developed. The effort would be small compared to the benefits of a much-improved analysis.

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