Bio-Inspired Shark Skin Riblets for Centrifugal Pump Impellers: CFD and Experimental Analysis
DOI:
https://doi.org/10.63746/njtd.v22i5.3814Keywords:
Centrifugal pump, Biomimetic riblet structure, Shark skin, CFDAbstract
This study aimed to investigate a new bionic approach to analyze a centrifugal pump through numerical simulations and compare the results with experimental findings. A centrifugal pump consisting of six backward-curved blades; models of the impeller were designed using the riblet structure of shark skin. The flow inside the pump was studied using k-epsilon (k-?) turbulence models. The k-model gave results closest to the real experimental data. In most studies, only design parameters are considered during computational fluid dynamics (CFD) analyses without consideration of experimental results. Here, a new bio-inspired technique called bionics is applied to the impeller of a pump. The experiments were carried out using a computer-controlled testing setup. The pump's performance parameters were analyzed using both CFD simulations and experimental tests on the duty point as per the manufacturer’s catalog, having a revolution of 2,900 rpm. The bionic impeller achieves a best efficiency point (BEP) at a discharge rate of 12 m³/hr, with a head of 32.75 m and an efficiency of 39.21%. The CFD results closely matched the experimental results at the design flow rate and at all other tested flow rates. In addition, by integrating nature-inspired design with testing, this study contributes to the development of high-performance, sustainable pumps.
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