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A venturi device for stable addition of foaming agent to self-suction liquid at high flow rates
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  • Caiyuan Lu,
  • Yuxin Wu,
  • Mujun Chen,
  • Yuntao Liang
Caiyuan Lu
China University of Mining and Technology

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Yuxin Wu
China University of Mining and Technology
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Mujun Chen
China University of Mining and Technology
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Yuntao Liang
China University of Mining and Technology
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Abstract

To achieve a stable addition of foaming agent under high flow rates, an independently designed Venturi structure with self-suction of liquid and foaming agent was numerically simulated. We simulated the effects of different suction structure diameters, contraction angles, throat length and position on the suction ratio, compared and analyzed the data, and determined the optimal suction structure parameters. The suction ratio stabilizes and then decreases as the outlet pressure increases. At an outlet pressure of 0.48 MPa, the suction ratio remains stable at 1.14%. However, as the outlet pressure increases, the ability of the Venturi structure to add foaming agent to the self-suction liquid decreases under high flow rates, causing the suction ratio to rapidly decrease to a minimum value of 0.55 MPa. The suction ratio shows a tendency to first stabilize and then decrease as the outlet pressure increases. When the outlet pressure reaches 0.48 MPa, the suction ratio can remain stable at 1.14%; as the outlet pressure increases, the addition ability of the Venturi structure with foaming agent added to the self-suction liquid under high flow rate decreases, and the suction ratio rapidly decreases to a minimum value of 0.55 MPa. We have conducted a detailed analysis of the process and flow field of liquid suction. As the pressure ratio increases, the high-speed area of the throat gradually shrinks, and the flow field in the diffusion section fluctuates. When the outlet pressure is 0.6 MPa and the velocity field shifts towards the upper part of the diffusion section, the cavitation area will gradually disappear and lose its liquid suction ability.
08 May 2024Submitted to Engineering Reports
10 May 2024Submission Checks Completed
10 May 2024Assigned to Editor
10 May 2024Review(s) Completed, Editorial Evaluation Pending
07 Jun 20241st Revision Received
10 Jun 2024Reviewer(s) Assigned