Research Article
Numerical Simulation of Flow-Induced Vibration of Three-Dimensional Elastic Heat Exchanger Tube Bundle Based on Fluid-Structure Coupling
Table 3
Theoretical value and numerical calculation value for natural frequency of four-span tube.
| Order | Theoretical value (hz) | Numerical calculation value (hz) | Error (%) |
| First-order frequency | 400.4 | 412.90 | 3.12 | Second-order frequency | 536.2 | 550.78 | 2.72 | Third-order frequency | 692.8 | 708.20 | 2.22 | Fourth-order frequency | 778.1 | 792.77 | 1.89 | Fifth-order frequency | 1489.9 | 1504.4 | 0.97 |
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