Optimal design of triangular side orifice using multi-objective optimization NSGA-II

Abstract

Triangular orifices are widely used in industrial and engineering applications, including fluid metering, flow control, and measurement. Predicting discharge through triangle orifices is critical for correct operation and design optimization in various industrial and engineering applications. Traditional approaches like empirical equations have accuracy and application restrictions, whereas computational fluid dynamics (CFD) simulations can be computationally costly. Alternatively, artificial neural networks (ANNs) have emerged as a successful solution for predicting discharge through orifices. They offer a dependable and efficient alternative to conventional techniques for estimating discharge coefficients, especially in intricate relationships between input parameters and discharge. In this study, ANN models were created to predict discharge through the triangle orifice and velocity at the downstream of the main channel, and their effectiveness was assessed by comparing the performance with the earlier models proposed by researchers. This paper also proposes a novel hybrid multi-objective optimization model (NSGA-II) that uses genetic algorithms to discover the best values for design parameters that maximize discharge and downstream velocity simultaneously. HIGHLIGHTS Two different ANN models have been developed to predict the discharge through the triangular side orifice and the downstream velocity in the main channel.; This study also presents a comparative analysis between previous models proposed by various researchers and the ANN model.; A hybrid multi-objective hybrid optimization model using genetic algorithm (NSGA-II) has also been developed in this study to discover the best values for design parameters that maximize discharge and downstream velocity simultaneously.;

Keywords

• artificial neural network
• coefficient of discharge
• levenberg–marquadt algorithm
• triangular orifice