Design Optimization of a Transonic-Fan Rotor Using Numerical Computations of the Full Compressible Navier-Stokes Equations and Simplex Algorithm

Table 3

Low fidelity design parameters.

Parameter	First stage		Second stage		Third stage
	Rotor	Stator	Rotor	Stator	Rotor	Stator
Blades number	25	27	34	35	34	35
Mean radius (m)	0.32	0.32	0.32	0.32	0.32	0.32
Aspect ratio	3.45	3.15	4	3.8	3.5	3.55
Blade height	0.28	0.21	0.2	0.19	0.17	0.16
Hub/tip ratio	0.39	0.49	0.52	0.53	0.57	0.6
(r.p.m)	9,800	—	9,800	—	9,800	—
Tip speed (m/s)	450	—	411.3	—	398	—
𝑀rel at tip	1.63	—	1.15	—	1.08	—
Pressure ratio	1.55		1.36		1.25
Isentropic efficiency	0.944		0.9337		0.9052