Bouferrouk Abdessalem

University of the West of England, Bristol | UWE Bristol · Department of Engineering Design and Mathematics

In this chapter, hydrogen fuel cell (HFC) technology is investigated as a solution for the general aviation industry. A modified Cessna 172 installed with poly-membrane fuel cells (PEMFCs) was modelled through MATLAB/Simulink software with Hydrogen (H2) as fuel. Under different scenarios, a model was produced in Simulink investigating hydrogen in t...

This chapter summarises the results of 2D CFD simulations of a 30P30N aerofoil section (without a leading edge slat) equipped with a morphing trailing edge flap (TEF). Numerical simulations are carried out at a fixed angle of attack of 8°, with f lap deflections of 5° and 15°. Results demonstrate that at the lower angle of attack case, the morphing...

Film cooling is one of the promising technologies used for protecting rocket nozzles and turbine blades from combustion chamber hot gases. This paper proposes a novel shape of film cooling injection hole, called lidded hole, that can offer significant enhancement of cooling performance. ANSYS CFX is used to perform 3D numerical simulations of a fla...

This paper presents initial results on the aeroacoustic and aerodynamic effects of morphing the trailing-edge flap of the 30P30N aerofoil, over five flap deflections (5–25°), at an 8° angle of attack and a Reynolds number of Re=9.2×105. The Ffowcs-Williams–Hawkings acoustic analogy estimates the far-field noise, whilst the flow field is solved usin...

This paper presents an unsteady flow analysis of a 3D wing with a morphing trailing edge flap (TEF) and a seamless side-edge transition between the morphed and static parts of a wing by introducing an unsteady parametrization method. First, a 3D steady Reynolds-averaged Navier–Stokes (RANS) analysis of a statically morphed TEF with seamless transit...

This paper presents an interdisciplinary framework for optimal mapping and integration of solar photovoltaic based DG systems. In a two-stage process, the proposed framework combines both spatial and technical-economic analysis, and uses efficient optimization techniques to make decisions. First, a GIS and a MCDM are used to identify the sites with...

Recently, rooftop photovoltaic (PV) systems are widely deployed due to their technical, economic and socio-environmental benefits. This paper presents a new design approach, which combines spatial analysis with techno-economic optimization for a robust design and evaluation of the technical and economic potential of grid-connected rooftop PV (GCR-P...

Pollution, global climate change, and the scarcity of fossil fuel reserves have forced the automotive industry to step up its research efforts on clean fuel cell electric vehicles (FCEVs). In fact, these systems can be considered relatively pollution-free systems, with zero greenhouse gas emissions and higher efficiency than traditional vehicles. F...

The unsteady flow characteristics and responses of an NACA 0012 airfoil fitted with a bio-inspired morphing trailing edge flap (TEF) at near-stall angles of attack (AoA) undergoing downward deflections are investigated at a Reynolds number of 0.62 × 106 near stall. An unsteady geometric parametrization and a dynamic meshing scheme are used to drive...

This work explores the aerodynamic and aeroacoustic responses of an airfoil fitted with a harmonically morphing Trailing Edge Flap (TEF). An unsteady parametrization method adapted for harmonic morphing is introduced, and then coupled with dynamic meshing to drive the morphing process. The turbulence characteristics are calculated using the hybrid...

Integrating sector coupling technologies into Hydrogen (H2) based hybrid renewable energy systems (HRES) is a promising way to create energy prosumers, despite the very little research being done in this largely unexplored field. In this paper, a sector coupling strategy (building and transportation) is developed and applied to a grid-connected PV/...

The growing research interest in hybrid renewable energy systems (HRESs) has been regarded as a natural and yet critical response to address the challenge of rural electrification. Based on a Bibliometric analysis performed by authors, it was concluded that most studies simply adopted supply-side management techniques to perform the design optimiza...

A pitching airfoil problem is addressed in this paper to assess the use of a non-iterative time-advancement (NITA) scheme with dynamic mesh method, and also to estimate possible CPU time savings. Simulations have shown that using a combination of dynamic mesh and NITA scheme can efficiently predict dynamic loads with quality results similar to thos...

Flow response to rapid morphing flap deflection is investigated at a Reynolds number based on chord of 0.62×10^6 for a 2D NACA 0012 airfoil fitted with a morphing Trailing-edge flap (TEF) at a range of angles of attack and morphing frequencies. The study was performed using a framework developed based on combining an unsteady parametrization method...

A numerical study of the NACA 0012 airfoil fitted with a harmonically morphing trailing edge flap (TEF) is performed at an angle of attack of 4º and a Reynolds number Re = 0.62×10^6 . The study focuses on high frequency, low amplitude configurations for the morphing flap and their effects on the aerodynamic performance and flow structures in the wa...

In this paper, a comparative study between a NACA 0012 rectangular wing with a statically morphed Trailing Edge Flap (TEF) and the same wing with a hinged flap is performed at a Reynolds number based on the chord length of Re = 0.62×10^6 and a Mach number of 0.115. Furthermore, an unsteady flow analysis of a dynamically morphing wing is performed,...

Purpose The purpose of this paper is to use dynamic meshing to perform CFD analyses of a NACA 0012 airfoil fitted with a morphing trailing edge (TE) flap when it undergoes static and time-dependent morphing. The steady CFD predictions of the original and morphing airfoils are validated against published data. The study also investigates an airfoil...

Purpose –The purpose of this paper is to provide an aerodynamic study of a morphing NACA0012 concept in order to validate the results available from OpenFOAM , to quantify the improvement of efficiency compared to flapped airfoils and to provide a methodology to perform an unsteady CFD analysis of morphing airfoils. Design/methodology/approach – We...

This paper discusses the design, manufacture and testing of a light weight, camber morphing wing concept for UAV application. The concept is based on using an MFC actuator attached to a composite plate which extends along the main wing and connects leading and trailing edge sections. The flexible composite plate acts as a smart wing rib to create a...

A morphing wing is a bio-inspired concept where all moving parts e.g. slats/flaps are replaced with a deformable body. This paper describes a methodology that uses modified parametrization methods to define a morphing geometry, and applies user-defined function (UDF) to generate dynamic meshing around it for unsteady flow analysis. To verify mesh q...

Over the last 20 years, research on aerodynamic flow control methods has received considerable attention due to its ability to improve aircraft aerodynamic performance beyond current capabilities (Ternoy et al., 2013). It is evident that a successful implementation of flow control in an aircraft’s high-lift devices can result in various benefits to...

This study examines the performance of an improved 5-beam ADCP, with a vertical beam, when deployed to measure non-directional waves in waters of 40 m depth. To assess the performance, the ADCP is compared with four co-located directional wave buoys. The surface elevation spectra as measured by the vertical beam compare well with estimates from the...

This report provides an overview of resource assessment techniques for marine energy developments and the requirements at different stages of project development. It then details the studies that have been completed in Cornwall and the Isles of Scilly (Section 3) and Finistère and PNMI (Section 4). These studies combine shorter-term in situ measure...

This study compares two methods for calculating the unsteady aerodynamic side force on a high speed train running in a turbulent crosswind at discrete points along a straight track: the method of aerodynamic weighting function, and that of the quasi-steady theory. Both methods are concerned with time series estimation of aerodynamic loading based o...

The paper details the capabilities of the newly developed TRDI 5-beam ADCP system deployed near the Wave Hub in the Bristol Channel, UK at nominal water depths of ~ 40 m. The ADCP's wave and current data are being accumulated to support resource assessment and future design of wave energy devices at the Wave Hub site off the North Cornwall coast, U...

Increasing train speeds combined with the predicted reduction in the weight of new trains ensure that the effect of crosswinds on train stability is of continued interest to the rail industry. Changes in the approaching wind velocity can in turn lead to changes in both the lift and side force on a vehicle. Calculations of the wind induced force can...

Passive and active control studies have been conducted to investigate the feasibility of stabilising a trapped vortex. Passive stabilisation is achieved using distributed steady wall suction. An enhanced aerodynamic performance with lower drag and higher lift has been achieved as a result of passive stabilisation, but only up to moderate suction ra...

In this study we propose the Tikhonov regularisation technique as a useful tool in discrete (blob) vortex methods (DVM). The effectiveness of Tikhonov technique is illustrated for the case of a specific blob vortex method, although the idea may be applicable to a wide class of vortex methods. The flow under consideration, modelled with blob vortice...

The static crosswind displacements of a high speed pantograph and contact wire are studied. The aim is to assess the overall pantograp h sway in crosswinds based on the relative movements of the pantograph and contact wire, takin g into account the crosswind deflection of the train body. The pantograph and wire deflecti ons are derived from simplif...

Abstract In order to address the issue of train overturning due to cross winds, the study proposes a robust,method,for the integration of turbulent cross,wind,forces,into train dynamic calculations. The unsteady,forces are determined,through,the concept,of aerodynamic weighting function from experimental,data of aerodynamic,admittance. For constant...

In this study we investigate the effective-ness of some control techniques, both passive and ac-tive, for the stabilisation of a large-scale trapped vortex of a Lighthill's airfoil. The flow is two-dimensional, in-compressible and inviscid solved using a discrete vortex method code. It was found that stabilisation improves the aerodynamic character...