For the turbine multi-discipline optimization (MDO) design

the important principle of MDO firstly extended to component autonomy from disciplinary autonomy.Based on these principles

four kinds of MDO frameworks

which were applied on the turbine design

combining present MDO strategies including BLISS(bi-level integrated system synthesis)2000

CO(collaborative optimization) and ATC(analytical target cascading) were designed.Both the two-layer including double-subsystem strategy and the two-layer including triple-subsystem strategy were built by BLISS2000 strategy as the two-layer framework for turbine design

while the three-layer including triple-subsystem strategy gave the full play to the merits of BLISS2000 and CO strategies.The ATC optimization strategy required huge extra optimization cost

so it is not qualitatively suitable for triple-layer MDO strategy on turbine.After testing

the preponderance of the multi-layer optimization strategies including three subsystems is higher efficiency

while complex interactions between layers always lead to worse optimization accuracy and efficiency on three layers strategy compared with two layers strategy.