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.
| Investigator | Secondary flow loss reduction technique | Optimization parameter |
| Brennan et al. [15] | Endwall profiling | SKEH | Ingram [8] | Endwall profiling | CSKE | Corral and Gisbert [14] | Endwall profiling | SKEH + an exponential function of inlet swirl angle | Bagshaw et al. [16] | Endwall profiling | SKEH | Nagel and Baier [17] | Endwall profiling | Weighted addition of various postprocessor results (averaged loss accounts for the major part) | Duden et al. [18] | Endwall and leading edge modification | Exit flow angle deviation and a secondary flow area with the least possible distance from the endwall | Harvey et al. [19] | Endwall profiling | Cross-passage static pressure gradient on endwall and exit flow angle deviation | Pralsner et al. [20] | Endwall profiling | Total pressure loss coefficient, SKE and TKE (turbulent kinetic energy) | Ingram et al. [9] | Endwall profiling | Exit flow angle deviation | Germain et al. [21] | Endwall profiling | Combination of total pressure loss coefficient and CSKE | Schüpbach et al. [22] | Endwall profiling | CSKE | Moon and Koh [2] | Streamwise endwall fence | Stream wise vorticity |
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