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A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

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Fluid-structure coupling calculation of a prototype Self-priming Pump-vehicle system.

Ying-Yu Ji¹, Hai-Bin Lin², Yu-Liang Zhang³

¹College of Mechanical Engineering, Quzhou University, Quzhou, 324000, China.

Scientific Reports

|May 6, 2025

Summary

This summary is machine-generated.

This study analyzed self-priming pump pressure fluctuations and their effect on mobile pump truck frames. Lower flow rates cause greater frame stress and displacement, which decrease as flow rate increases.

Keywords:

Fluid-structure coupling Numerical simulation Pressure fluctuation Pump truck Self-priming pump

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Area of Science:

Fluid dynamics
Mechanical engineering
Vibration analysis

Background:

Mobile pump trucks rely on self-priming pumps, whose internal pressure fluctuations can impact structural integrity.
Understanding these fluctuations is crucial for optimizing pump performance and ensuring the longevity of the pump truck frame.

Purpose of the Study:

To investigate the internal pressure fluctuation characteristics of self-priming pumps used in mobile pump trucks.
To analyze the impact of these pressure fluctuations on the pump truck's frame under various operating conditions.

Main Methods:

Conducted performance tests on a self-priming pump for a mobile pump truck.
Utilized FLUENT software for internal flow calculations and pressure fluctuation analysis.
Performed fluid-structure coupling simulations to study frame displacement and stress distribution.

Main Results:

The impeller inlet flow field is stable under rated flow conditions.
Significant frame displacement and stress were observed at low flow rates.
Increasing the flow rate led to a gradual decrease in maximum frame displacement and stress.

Conclusions:

Self-priming pump performance is linked to frame structural dynamics in mobile pump trucks.
Operating conditions significantly influence both internal pump pressures and frame stress.
Optimizing flow rates can mitigate structural stress on the pump truck frame.