Study on Refined Calculation Method for Added Mass of Special-shaped Structures in Complex Fluid Domain

Tan Ximing; Gao Fuhai; Qi Min; Wang Yueying; Liu Zhaoyang

doi:10.13832/j.jnpe.2023.04.0100

Volume 44 Issue 4

Aug. 2023

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Tan Ximing, Gao Fuhai, Qi Min, Wang Yueying, Liu Zhaoyang. Study on Refined Calculation Method for Added Mass of Special-shaped Structures in Complex Fluid Domain[J]. Nuclear Power Engineering, 2023, 44(4): 100-106. doi: 10.13832/j.jnpe.2023.04.0100

Citation:

Tan Ximing, Gao Fuhai, Qi Min, Wang Yueying, Liu Zhaoyang. Study on Refined Calculation Method for Added Mass of Special-shaped Structures in Complex Fluid Domain[J]. Nuclear Power Engineering, 2023, 44(4): 100-106. doi: 10.13832/j.jnpe.2023.04.0100

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Study on Refined Calculation Method for Added Mass of Special-shaped Structures in Complex Fluid Domain

doi: 10.13832/j.jnpe.2023.04.0100

China Institute of Atomic Energy, Beijing, 102413, China

Received Date: 2022-09-22
Rev Recd Date: 2023-05-12
Publish Date: 2023-08-15

Abstract

Abstract

The engineering design of reactor internals usually uses the added mass method to simulate the dynamic effects of fluids on the structure. Taking a special-shaped pressure pipe immersed in a complex fluid domain as an example, a structural added mass iterative calculation method is proposed, which uses the wet mode obtained from the acoustic-structure coupling analysis as the benchmark, comprehensively considers the fluid density and bulk modulus to determine the structural added mass, and discusses the applicability of this method. The accuracy of the added mass calculation has been demonstrated by comparing the measured and simulated results of the 1∶1 vibration test of the pressure pipe. The results show that the method proposed in this paper can accurately obtain the main frequency and vibration mode of the structure, and has a fast convergence speed, which can be used as a reference for similar engineering simulation analysis.
- Complex fluid domain,
- Special-shaped structure,
- Acoustic-structure coupling,
- Added mass,
- Vibration test

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References(15)

References

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