Fig. 3. Meridional channel parameterization.Figure optionsDownload full-size imageDownload as PowerPoint slide
Blade loading distributions (Fig. 4) BIBR 953 usually specified along the hub and shroud streamlines. Along each streamline, three-segment distribution was adopted and four parameters, namely, connection point locations NC and ND, slope of the linear line SLOPE, and loading at the leading edge DRVT, were used to control the distribution curve. The blade loading inside the blade channel was determined by linear interpolation between the hub and shroud.
Fig. 4. Blade loading distributions.Figure optionsDownload full-size imageDownload as PowerPoint slide
Blade stacking specifies the blade lean angle θ at the HPS of the blade ( Fig. 5), where β=arctan[(θ·(D2/2))/b2]β=arctan[(θ·(D2/2))/b2] is flame cell the rake angle. The stacking condition was imposed linearly along the HPS of the blade.
Fig. 5. Blade lean at high pressure side.Figure optionsDownload full-size imageDownload as PowerPoint slide