article · Advanced Theory and Simulations
Simulations of water flow through aluminium circular pipes explore how varying the half-cycle length in converging wavy ducts with diverging outlets alters fluid behaviour. Using computational fluid dynamics with the Shear Stress Transport k-omega model, specific geometries featuring a 40 mm major inlet and 10 mm minor inlets were evaluated. The results demonstrate that increasing the number of sinusoidal half-cycles intensifies turbulence, which increases the Reynolds number and enhances cooling performance. Longer wavy ducts accelerate fluid flow, yielding higher outlet velocities and greater turbulent kinetic energy. Furthermore, turbulent viscosity rises notably with higher inflow velocity and temperature in a 2.5-period duct. Comparing configurations reveals that a 12.5-period duct produces substantially higher turbulent viscosity than a 2.5-period duct, establishing key parameters for controlling fluid acceleration and thermal dissipation.
Managing fluid flow and turbulence inside pipelines is essential for effective cooling in industrial processes. By detailing how specific wavy pipe shapes alter fluid speed, pressure gradients, and turbulence, this study assists engineers in designing more efficient heat exchangers. These geometric adjustments offer practical methods to boost thermal dissipation and energy efficiency without requiring complex mechanical additions.
These computational insights apply directly to thermal management systems, industrial cooling loops, and heat exchanger design. Engineers and manufacturers seeking to improve heat dissipation and flow control can utilise these wavy duct geometries to guide physical prototyping. Because the findings are based on computer simulations rather than experimental hardware testing, the work represents early-stage design research that requires physical fabrication and testing before industrial deployment.
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Abstract The dynamics of water‐liquid flow through aluminum circular pipes are examined to investigate the effects of half‐cycle length in converging wavy ducts with diverging outlets. This study provides insights into flow control, energy efficiency, enhanced heat transfer, and turbulence management, all of which have significant industrial applications. The SpaceClaim‐generated duct designs have 40 mm major inlet diameters and 10 mm minor inlets on either side, with an output diverging to 10 mm. The Shear Stress Transport (SST) k‐ model in ANSYS Fluent 2024R2 is used for better management of pressure gradients and precise prediction of boundary layer behavior. Meshing and simulation followed a strict methodology, assuring precision and dependability. It is worth noting that increasing the number of sinusoidal half‐cycles increases turbulence, which raises the Reynolds number and enhances the cooling effect. Longer wavy ducts are shown to increase flow acceleration, resulting in greater output velocities and more turbulent kinetic energy production. Turbulent viscosity in a 2.5‐period sinusoidal wavy duct rises dramatically with inflow velocity and temperature. A 12.5‐period sinusoidal wavy duct is substantially more turbulent viscosity than a 2.5‐period duct. These findings have important implications for applications that require improved heat dissipation and flow control, including heat exchanger design and thermal management systems.
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DOI: 10.1002/adts.202500038
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