EFD and CFD Design and Analysis of a Propeller in Decelerating Duct

Table 1

Main discretization parameters.

	Open water	Cavitating flow
Panel method
Number of panels	About 3200	About 3200
Time step(s)	Steady computation	Steady computation
RANS
Number of cells	About 2.7 millions	About 3.3 millions
Number of prism layers	5	10
Prism layer thickness (mm)	0.8	1.5
𝑌^+ (average on blade)	Abt. 35	Abt. 35
𝑌^+ (average on duct)	Abt. 25	Abt. 25
𝑌^+ (max at blade trailing edge)	73	95
𝑌^+ (max at duct trailing edge)	47	59
Max. skewness angle	Abt. 73	Abt. 83
Min. volume change	4·10^−4	3.6·10^−4
Time step(s)	Steady computations	5·10^−5