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Developement Of A Batch Mode For Conduit And Its ... - Cal Poly

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Design Parameters used:<br />

dpp_RAHA<br />

Correlated Parameters:<br />

<br />

Summary of results-----------------------------------------------------<br />

--------<br />

Remaining active design parameters:<br />

dpp_RAHA<br />

Exiting sensitivity analysis. Continuing run of current case.<br />

Figure 47 - Sensitivity Log<br />

In this automated sensitivity analysis, the optimization stopped in Phase 3 when<br />

the design parameters could not be changed in the last 3 iterations. Because the<br />

optimization was in Phase 3, the specs critical to that phase, namely the two Summed<br />

Objective specs, were used. All four design parameters were checked for insensitivity,<br />

and three parameters were frozen. Since only one design parameter remained, a check<br />

for correlated parameters was not performed. The end of the log indicates that one design<br />

parameter remains active, and that the optimization will continue.<br />

Upon completion, the sensitivity automation would exit to the run algorithm,<br />

continuing the optimization of the current case with the same stop condition. The cycle<br />

of running a sensitivity analysis and an optimization would continue until it is determined<br />

that satisfactory results have been obtained, the sensitivity automation has frozen all<br />

design parameters, or the sensitivity analysis was unable to freeze any design parameters.<br />

Run <strong>Mode</strong> would then move on to the next case.<br />

In conclusion, the sensitivity automation performs the same process that would be<br />

performed by a user analyzing a CONDUIT problem. It provides the means of<br />

automatically identifying and freezing insensitive and correlated parameters. By adding<br />

87

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