Turbulent pipe flows are prevalent in industrial applications. Despite a large body of experimental and more recently numerical investigations there are still unresolved fundamental issues. Among those are the scaling of the Continue reading
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Tag: Mechanics
Nutrient Driven Topology Optimization (Mechanical Project)
The aim of this study is to investigate how a biological structure changes its shape and boundary under different cases of load if flow of nutrients is included, since nutrient flow has not been taken into account in Continue reading
Simulating a tensile test of a carbon fiber composite test specimen in ABAQUS (Mechanical Project)
This work aims at providing a numerical tool for the efficient design of the multidirectional carbon fiber reinforced composite material by means of finite element simulations. Abaqus/ CAE v 6.9-1 software has been used to establish a 3D model for Continue reading
Instabilities in Pulsating Pipe Flow of Shear-Thinning and Shear-Thickening Fluids (Mechanical Project)
In this study, we have considered the modal and non-modal stability of fluids with shear-dependent viscosity flowing in a rigid straight pipe. A second order finite-difference code is used for the simulation of pipe flow in the cylindrical coordinate system. The Carreau-Yasuda model where the Continue reading
Linear Acoustic Modelling and Testing of Exhaust Mufflers (Mechanical Project)
Intake and Exhaust system noise makes a huge contribution to the interior and exterior noise of automobiles. There are a number of linear acoustic tools developed by institutions and industries to predict the acoustic properties of Continue reading
Design of Parametric Winglets and Wing tip devices: A Conceptual Design Approach (Mechanical Project)
Winglets being a small structure play an important role in reducing the induced drag in aircraft. Many types of winglets have been designed and their significance in reducing the drag is published. One of the main objectives of this work is to Continue reading
Gearbox Housing Topology Optimization With Respect To Gear Misalignment (Mechanical Project)
Structural topology optimization methods have existing and been improving theoretically since 1980s; however, in industry, with respect to the certain conditions, proper modification is always desired. This study develops a specific method to utilize Continue reading
Validation and integration of a Rubber Engine Model into an MDO environment (Mechanical Project)
Multidisciplinary design optimization (MDO) is a technique that has found use in the field of aerospace engineering for aircraft design. It uses optimization to simultaneously solve design problems with several disciplines involved. In order to predict aircraft performance an engine Continue reading
Moment Balance Of An Axisymmetric Jet And The Effect Of Air Entrainment From Ambient (Mechanical Project)
The momentum flux of turbulent impinging jet is not conserved causing a transfer of momentum between the jet and its ambient, which may result in either increasing or decreasing the momentum flux of the jet. In order to study the nature of the momentum Continue reading
EU Energy Situations and Supply Security (Mechanical Project)
Energy supply security is a hot topic today. It highly influences energy market, national security and also residents’ daily lives. However, due to different aims and study strategies, definitions of energy supply security are Continue reading
Windscreen study using a free moving headform: An investigation of windscreen behaviour when subjected to headform impact (Mechanical Project)
Pedestrian protection performance becomes more and more in focus for the car manufactures and systems to reduce injury risk are under development. A wider understanding of both the present and the future windscreen performance in free moving headform testing is Continue reading
Method Evaluation of Global-Local Finite Element Analysis (Mechanical Project)
When doing finite element analysis upon the structure of Saab’s aeroplanes a coarse global model of mainly shell elements is used to determine the load distribution for sizing the structure. At some parts of the aeroplane it is however desirable to implement Continue reading
A finite element method for calculating load distributions in bolted joint assemblies (Mechanical Project)
Bolted joints are often the most critical parts with respect to fatigue life of structures. Therefore, it is important to analyze these components and the forces they are subjected to. Continue reading
Geometry-dependence of the adhesive strength of biomimetic, micropatterned surfaces (Mechanical Project)
Pressure sensitive adhesive surfaces are often inspired by nature. Miming the toe-surface of gecko, engineered surfaces made of thousands of micro-pillars show promising adhesive properties. This surfaces, covered with cylindrical pillars arranged into a pattern have adhesive properties greatly dependent on the Continue reading
Assessment of the applicability of XFEM in Abaqus for modeling crack growth in rubber (Mechanical Project)
The eXtended Finite Element Method is a partition of unity based method, particularly suitable for modelling crack propagation phenomena, without knowing a priori the crack path. Its numerical implementation is mostly achieved with stand-alone codes. The implementation of the Continue reading
Acoustics of parallel baffles muffler with Micro-perforated panels (Mechanical Project)
Micro-perforated panels (MPP) have a good acoustic damping performance and a potential to be used in mufflers. This project aims to investigate the acoustic performance of a parallel baffles muffler, which consists of MPP baffles. The work is both experimental and Continue reading
Electronic Pump Control and Benchmarking of Simulation Tools: AMESim and GT Suite (Mechanical Project)
Load sensing pumps in hydraulic system of wheel loaders helps in increasing the energy efficiency of wheel loaders. Present day machines have hydro mechanical load sensing system. After the advent of hydro mechanical load sensing concept, over the years, lots of Continue reading
Investigation of Film Cooling Strategies CFD versus Experiments-Potential for Using Reduced Models (Mechanical Project)
The ability and efficiency of today’s gas turbine engines are highly dependent on development of cooling technologies, among which film cooling is one of the most important. Investigations have been conducted towards discovering different aspects of film cooling, utilizing both Continue reading
Mechanics of Optimal Rowing (Mechanical Project)
The forward dynamic approach is different from the inverse dynamic one, and could set up the relation between the angles and controls. The author tries to analyze the optimal rowing movement patterns between the catch and finish configurations in Continue reading
Parametric Ram Air Channel Model for Flow Optimization (Mechanical Project)
Ram air channel or NACA channel is used to direct the ambient air for various purposes in an aircraft, such as pressurizing the cabin or as a coolant to heat exchangers and even more other applications like a cooling of the coolant. It is designed; such that it supplies the Continue reading