International Journal of Rotating Machinery / 2011 / Article / Tab 2

Research Article

Secondary Flow Loss Reduction in a Turbine Cascade with a Linearly Varied Height Streamwise Endwall Fence

Table 2

Objective functions used for different secondary flow reduction techniques.

InvestigatorSecondary flow loss reduction techniqueOptimization parameter

Brennan et al. [15]Endwall profilingSKEH
Ingram [8]Endwall profilingCSKE
Corral and Gisbert [14]Endwall profilingSKEH + an exponential function of inlet swirl angle
Bagshaw et al. [16]Endwall profilingSKEH
Nagel and Baier [17]Endwall profilingWeighted addition of various postprocessor results (averaged loss accounts for the major part)
Duden et al. [18]Endwall and leading edge modificationExit flow angle deviation and a secondary flow area with the least possible distance from the endwall
Harvey et al. [19]Endwall profilingCross-passage static pressure gradient on endwall and exit flow angle deviation
Pralsner et al. [20]Endwall profilingTotal pressure loss coefficient, SKE and TKE (turbulent kinetic energy)
Ingram et al. [9]Endwall profilingExit flow angle deviation
Germain et al. [21]Endwall profilingCombination of total pressure loss coefficient and CSKE
Schüpbach et al. [22]Endwall profilingCSKE
Moon and Koh [2]Streamwise endwall fenceStream wise vorticity

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