Computational Fluid Dynamics Modeling Three-Dimensional Unsteady Turbulent Flow and Excitation Force in Partial Admission Air Turbine

Table 6

Axial and circumferential force in 75% admission.

Excitation force	Parameters	Axial force	Tangential force
Classical partial admission rectangular wave excitation force	Maximum of inlet section/𝑁	2.79	8.86
	Minimum of inlet section/𝑁	1.38	6.52
	Average/𝑁	2.10	7.66
Partial admission local vibration force	Maximum/𝑁	3.11	9.60
	Minimum/𝑁	−4.80	−2.34
	Maximum varied amplitude at P location/𝑁	7.31	11.10
	Maximum varied amplitude at Q location/𝑁	2.89	11.03
The ratio of local maximum excitation force and classical excitation force		3.48	1.45