The main objective of the “INNWIND.EU” project is to investigate and demonstrate innovative designs for 10-20MW offshore wind turbines and their key components, such as lightweight rotors. In this context, the present paper describes the development of two new airfoils for the blade root region. From the structural point of view, the root is the region in charge of transmitting all the loads of...

The airfoil is the prime component of flying vehicles. For low-speed flights, low Reynolds number airfoils are used. characteristic a laminar separation bubble and an associated drag rise. This paper presents framework for design airfoil. contributions proposed research twofold. First, convolutional neural network (CNN) designed aerodynamic coefficient prediction airfoils. Data generation discu...

A parallel genetic algorithm (GA) was used to generate, in a single run, a family of aerodynamically efficient, low-noise rotor blade designs representing the Pareto optimal set. The n-branch tournament, uniform crossover genetic algorithm operates on twenty design variables, which constitute the control points for a spline representing the airfoil surface. The GA takes advantage of available c...

There are different types of airfoil used in many applications such as energy production, aerospace, mixing fluid products. Design optimization studies still being carried out on the type structures. The section is most important factor affecting quality and efficiency performed work. aim this study shape to generate more lift than original creates. For purpose, Bézier curves polar points, XFOI...

Advanced optimisation of the aerofoil wing a general aircraft is main subject this paper. Meta-heuristic techniques, especially swarm algorithms, were used. Subsequently, new variant denoted as particle (aPSO) was developed from original (PSO). A parametric model based on B-spline used to optimise initial aerofoil. The simulation software Xfoil calculating basic aerodynamic features (lift, drag...

Abstract The NACA4415 airfoil was numerically simulated with the help of Fluent software to analyze its aerodynamic characteristics. Results are acquired as follows: calculation accuracy is much higher than that XFOIL software; result SST k - ω (sstkw) turbulence model closest experimental value; within a certain range, larger Reynolds number is, lift coefficient and lift-to-drag ratio will be,...

The aerodynamics of airfoils can be seen in a wide range applications. To obtain the aerodynamic loads, geometrically-scaled airfoil sections are tested wind tunnels. However, due to limited space tunnel, mismatch Reynolds numbers may lead different loads. Previous works showed that decreased lifts and increased drag coefficients associated with lower numbers, which accompanied by changes ambie...

The aerodynamic optimization method was presented to design a propeller airfoil for stratosphere airship at low Reynolds numbers. delta class and shape transformation were adopted describe the geometry as variables. flow field calculated by an open-source code XFOIL obtain characteristics targets. separated particle swarm employed algorithm. case started with typical number E387 obtained thicke...

Natural laminar-flow (NLF) airfoils are one of the most promising technologies for extending range and endurance aircrafts. However, there is a lack methods optimization based on surface contamination that destroys laminar flow. In order to solve this problem, robust process proposed using Non-dominated Sorting genetic algorithm- II (NSGA-II) evolutionary algorithm, Monte Carlo simulation combi...

The present study addresses the experimental and numerical verification of the performance of a new airfoil design for lift driven vertical-axis wind-turbines (VAWT). The airfoil is obtained by a genetic algorithm optimization of the objective function proposed by Simão Ferreira and Geurts [19], which optimizes the aerodynamic performance of airfoils having a relatively larger thickness, provid...