Numerical Simulation of Flow-Induced Vibration of Three-Dimensional Elastic Heat Exchanger Tube Bundle Based on Fluid-Structure Coupling

Table 8

Grid independence results of five-tube bundle.

Grid	Quantity			Lift frequency (Hz)	St
1	217890	0.592	0.106	60	0.24
2	241472	0.633	0.13	50	0.20
3	303256	0.641	0.068	52.63	0.21
4	344215	0.638	0.069	52.17	0.209