Computational Fluid Dynamics: Unraveling Pump Vibration Complexities through Advanced Simulations and Collaborative Expertise

Project Background
In tackling a pump vibration challenge attributed to flow conditions in the suction pipe, our project aimed to pinpoint the root cause of the issue. The suspicion of vibration resonance from turbulent flow led to an in-depth exploration.

Methodology and Approach
Addressing the complexity of simulations, our team embraced an innovative approach by employing the ICEM meshing method. This ensured a high-quality mesh, crucial for accurate and reliable engineering results. The goal was to disprove the client’s theory about the source of vibration.

Challenges
The project encountered challenges, especially in collaborating with a pump supplier. As the main potential cause remained unproven, extensive research on turbulent flow’s impact on the pump was necessary. Factors such as the Nsss number, vortex flow, and turbulent kinetic energy from other lines were thoroughly investigated.

Outcome
Through meticulous simulations and comparisons with journals, we disproved the initial suspicion. The project unveiled that turbulent piping was unlikely to induce vibrations within the pump. Instead, the probable cause was identified as recirculation phenomenon inside the pump. The outcome allowed the client to strategically design a layout with reduced turbulence, minimizing the risk of vortex flow-induced vibrations.

This project significantly contributed to the client’s success by providing a comprehensive understanding of pump behavior and facilitating the design of a layout that mitigates potential vibrations. Aspects like recirculation, often overlooked, were highlighted for future considerations, emphasizing the importance of expanding the Scope of Work (SOW) to include the pump’s internal dynamics.

Highlights

1. Precision Meshing: Employed the advanced ICEM meshing method for intricate simulations, ensuring high-quality results in engineering analyses.
2. Collaborative Challenges: Successfully navigated collaboration hurdles with a pump supplier, addressing complexities in the project’s investigative phase.
3. Thorough Research: Conducted extensive research on turbulent flow dynamics, considering factors like Nsss number and vortex flow, to pinpoint potential sources of pump vibrations.
4. Strategic Layout Design: Disproved initial suspicions and identified recirculation phenomenon, enabling the client to design a layout that strategically mitigates vibration risks.
5. Comprehensive Understanding: Contributed to the client’s success by providing in-depth insights into pump behavior, fostering a nuanced understanding for future projects.
6. Scope of Work Expansion: Emphasized the importance of expanding the Scope of Work (SOW) to include internal pump dynamics, ensuring a more comprehensive approach for future endeavors.