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Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
Published on: June 12, 2015
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Design Analysis of Migration Nozzles Using CFD.
Makhsuda Juraeva1, Dong-Jin Kang1
1School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyoungsan 38541, Republic of Korea.
Polymers
|October 28, 2025
Summary
This study analyzed migration nozzle designs for synthetic fiber spinning using computational fluid dynamics (CFD). Circular channels and specific air orifice diameters (1.3mm single, 0.9mm double) optimize vortex flow for better fiber production.
Area of Science:
- Materials Science
- Fluid Dynamics
- Textile Engineering
Background:
- Migration nozzles are crucial components in synthetic fiber spinning.
- Optimizing nozzle design impacts yarn quality and production efficiency.
Purpose of the Study:
- To present a computational fluid dynamics (CFD) based design analysis for migration nozzles.
- To investigate the influence of yarn channel shape and air orifice parameters on vortex flow.
Main Methods:
- Detailed CFD simulations were performed on migration nozzle systems.
- Analyzed yarn channel cross-sectional shapes (square vs. circle).
- Varied air orifice diameter (0.6-2.0 mm) and configurations (single/double).
Main Results:
- Circular yarn channels are preferable to square ones due to vortex formation.
- Air orifice diameter significantly impacts internal vortex flow.
- Optimal centerline vorticity achieved with 1.3 mm (single) and 0.9 mm (double) orifices.
Conclusions:
- Centerline vorticity is a reliable parameter for evaluating migration nozzle design.
- CFD results were validated against experimental data.
- Design optimization can enhance synthetic fiber spinning processes.
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