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"Ives, Rob"
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CFD Analysis of C-D Nozzle Compared with Theoretical & Experimental Data
In modern Computational Fluid Dynamic (CFD) Analysis of Convergent-Divergent (C-D) Nozzles, current research has shown that, it is common practice to use either experimental or analytical results to predict the accuracy of the CFD models by comparison of the results. It is also commonly agreed, amongst the literature reviewed, that the CFD modelling software packages available do not accurately model turbulence for applications such as transonic C-D nozzles. This study aims to develop a theoretical approach for calculation of flow properties along the axis of the C-D nozzle based on the fundamental gas dynamic equations. The theoretical analyses is validated by experimental data. Then, the CFD model is used to simulate the experimental cases which are compared with the data from both theoretical analysis and experimental measurements. Then, the validated CFD model can be used for more complex analyses, representing more elaborate flow phenomena such as internal shockwaves and boundary layers. The geometry used in the analytical study and CFD simulations constructed to model the experimental rig. The [1, 2] analytical study is undertaken using isentropic and adiabatic relationships and the output of the analytical study, the 'shockwave location tool', is created. The results from the analytical study are then used to optimise the redesign an experimental rig to for more favorable placement of pressure taps and gain a much better representation of the shockwaves occurring in the divergent section of the nozzle. The results from the CFD model can then be directly compared other results in order to gauge the accuracy of each method of analysis. The validated model can then be used in order to create several, novel nozzle designs which may offer better performance and ease of manufacture and may present feasible improvements to existing high-speed flow applications.
Journal Article
Build your own rockets and planes
\"Create your own model-sized vehicles powered by balloons, rubber bands, and small motors. Step-by-step instructions, illustrations, and photographs guide readers through the building process, while informative text explains the science--aerodynamics, gravity, propulsion--behind them\"-- Provided by publisher.
Book
Investigation of the flow around an aircraft wing of section NACA 2412 utilising ANSYS fluent
The aim of this paper is to produce and validate a simulated model of the external flow around the NACA 2412 using ANSYS Fluent; utilising experimental data for a low velocity case (20.73 m/s) from literature. This model will be subsequently used to produce data for a high velocity case (272.1 m/s, Mach = 0.8) which is the practical velocity for commercial aircraft. Both an infinite aspect ratio wing (2D) and a finite aspect ratio wing (3D) will be the subjects of this investigation. Experimental data on which the simulated models will be compared and hence validated is taken from Jacobs et al. [1]. This experimental data contains both a finite aspect ratio wing and an infinite aspect ratio wing. An accurate simulation model of the external flow around a wing will be beneficial in the visualisation of the flow; particularly in the investigation of the onset of a stall and the aerodynamic characteristic differences between the wing root and wing tip. The model will also provide simulated data of an external flow condition of which no experimental data currently exists. Finally, value will be gained in the investigation between the differences of an external flow around a 2-dimensional (2D) wing versus a 3-dimensional (3D) wing. All simulations exhibited flow physics consistent with those seen in experimental data; further validating the results. A detailed methodology has been provided with a view that new data becomes available for this aerofoil and wing geometry. Considering the aerofoil simulation, incredible accuracy has been achieved. However, with regards to the wing simulation, further work is required to identify the issue which resulted in a lower lift curve slope when compared to the experimental data.
Journal Article
Build your own land vehicles
\"Solar-powered vehicles, gravity-driven cars, and spring-loaded three-wheelers will get kids on the path to learning. Makerspace-friendly projects with step-by-step illustrations guide them through hands-on science and engineering applications\"-- Provided by publisher.
Book
PERSONAL VIEW
\"...so as I reached for the football I stood on the calculator and it broke.\" \"Right Joe, never mind, accidents will happen.
Journal Article
Build It! Make It! : become a super engineer
Have fun powering up tiny versions of real-life vehicles and robots. Step-by-step, clear instructions are combined with cool illustrations to show you how to make all kinds of aircraft, boats, cars and robots - safely. Simple household items can be transformed into 36 awesome Makerspace Models. Launch a rocket with air and water power, build a soda bottle submarine, make an insect-droid with wire legs, explore eco-friendly solar power and more.. Unplug and become a super engineer and learn the science behind each project. Building your own stuff is inspiring for the budding engineers of the future. With hands-on fun learning, using high interest, brightly presented photographs of the finished result for guidance, it's a cool way to spend time.
Book
TILING GENERATORS
As with all resources, the introduction into the classroom is all important. The children will want to make giant designs, so let them work on the floor. Let them explore the tiles and get to know how they work. Encourage them to get a feel for the tiles and what style of pattern they create.
Journal Article
Reply Letters and emails: Education stuck on the starting line
So the Tories have asked Carol Vorderman to advise them on maths education policy.
Newspaper Article