A novel strategy for comprehensive optimization of structural and operational parameters in a supersonic separator...

Area of Science:

• Fluid dynamics
• Aerospace engineering
• Chemical engineering

Background:

• Supersonic separators are crucial for gas-liquid or gas-solid separation in various industrial applications.
• Optimizing their design is essential for improving efficiency and reducing operational costs.
• Accurate modeling of complex turbulent flows is key to effective supersonic separator design.

Purpose of the Study:

• To investigate and optimize structural and operational parameters for enhanced separation efficiency in supersonic separators.
• To evaluate the accuracy of different turbulence models for high swirling turbulent flow.
• To identify optimal designs for the convergent section, diffuser, drainage port, and swirler.

Main Methods:

• Numerical simulations were employed to analyze supersonic separator performance.
• Various turbulence models were assessed, with the V2-f model selected for its accuracy in swirling flows.
• Particle tracing and CFD (Computational Fluid Dynamics) were used to optimize geometric features and operational parameters.

Main Results:

• The V2-f turbulence model accurately described the high swirling turbulent flow.
• A convergent section designed using the Witoszynski curve showed superior cooling depth.
• An expansion angle of 2° in the diffuser ensured optimal fluid flow stability.
• An axial swirler with 12 arced vanes at a 40° swirl angle significantly improved separation efficiency.
• Increased droplet size and density markedly enhanced separation performance, particularly for hydrocarbon droplets.

Conclusions:

• The V2-f turbulence model and particle tracing are effective tools for supersonic separator optimization.
• Optimized structural designs, including specific convergent section curves and diffuser angles, improve performance.
• Axial swirlers are superior to wall-mounted and helical types for enhancing separation.
• Operational parameters like droplet size and density are critical factors for maximizing separation efficiency.