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<p>This study investigates the hydrodynamic performance of rectangular tanks by changing the flow pattern from linear to vortex. Three different configurations, linear flow (A), vortex cells with the opposite direction rotating flow (B), and vortex cells with one direction rotating flow (C) were designed and implemented in a rectangular tank of 0.2 × 0.5 × 0.13&#xa0;m. The primary objective of this study was to evaluate the hydrodynamic behaviour of the flow in these configurations, while the secondary objective was to assess the influence of the inflow impulse force in five levels (0.880&#xa0;kg.m/s², 0.022&#xa0;kg.m/s², 0.010&#xa0;kg.m/s², 0.005&#xa0;kg.m/s², and 0.003&#xa0;kg.m/s²) on this behaviour. The experimental results showed that configuration A (linear flow) had a shorter actual residence time under the same inflow impulse force than configurations B and C (vortex cells). In addition, high hydraulic efficiency was observed in configurations B and C, especially at the lowest applied impulse force (Fi = 0.003&#xa0;kg.m/s²). Configuration B showed an average decrease of 6.52% and 4.35% in stagnant regions compared to configurations A and C, respectively, across all levels of inflow impulse force. These findings indicate that the transition from linear to vortex flow patterns can significantly improve the hydrodynamic performance of rectangular tanks.</p>

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Enhancing Hydrodynamic Performance in Aquaculture Tanks: Transitioning from Linear to Vortex Flow Patterns

  • 期刊论文

  • 发表日期：

    2026年2月23日

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  • Atefeh Moghbeli,
  • Mahdi Naghizadeh,
  • Mohammad Zounemat-Kermani

摘要

This study investigates the hydrodynamic performance of rectangular tanks by changing the flow pattern from linear to vortex. Three different configurations, linear flow (A), vortex cells with the opposite direction rotating flow (B), and vortex cells with one direction rotating flow (C) were designed and implemented in a rectangular tank of 0.2 × 0.5 × 0.13 m. The primary objective of this study was to evaluate the hydrodynamic behaviour of the flow in these configurations, while the secondary objective was to assess the influence of the inflow impulse force in five levels (0.880 kg.m/s², 0.022 kg.m/s², 0.010 kg.m/s², 0.005 kg.m/s², and 0.003 kg.m/s²) on this behaviour. The experimental results showed that configuration A (linear flow) had a shorter actual residence time under the same inflow impulse force than configurations B and C (vortex cells). In addition, high hydraulic efficiency was observed in configurations B and C, especially at the lowest applied impulse force (Fi = 0.003 kg.m/s²). Configuration B showed an average decrease of 6.52% and 4.35% in stagnant regions compared to configurations A and C, respectively, across all levels of inflow impulse force. These findings indicate that the transition from linear to vortex flow patterns can significantly improve the hydrodynamic performance of rectangular tanks.