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

Table 7

Excitation force factor.

Excitation force direction	Excitation force parameters	First order	Second order
Axial direction	Low frequency force factor	0.645	0.429
	High frequency force factor	0.211	0.009
Tangential direction	Low frequency force factor	0.496	0.310
	High frequency force factor	0.093	0.004