The response of submerged structures subject to loading by underwater blast waves is governed by complex interactions between the moving or deforming structure and the surrounding fluid and these phenomena need to be thoroughly understood in order to design structural components against underwater blast.
This thesis has addressed the response of simple structural systems to blast loading in shallow or deep water environment. Analytical m ... [truncated at 450 characters in length]
|Subject||Solid mechanics Mechanical engineering|
This thesis presents a joint computational and experimental investigation into the heat transfer to unshrouded turbine blade tips suitable for use in high bypass ratio, large civil aviation turbofan engines. Both the heat transfer to the blade tip and the over-tip leakage flow over the blade tip are characterised, as each has a profound influence on overall engine efficiency.
The study is divided into two sections; in the first, computa ... [truncated at 450 characters in length]
|Creator||Brian M. T. Tang;|
|Subject||Aero engines Aerodynamics and heat transfer Turbomachinery hypersonics and aerodynamics Mechanical engineering Engineering & allied sciences|
|Abstract||This report reviews the definition and some of the properties of the Wigner-Ville distribution for both continuous and discrete signals. A digital computer program implementing the discrete Wigner-Ville distribution is described and its performance is demonstrated by the analysis in the time-frequency domain of a series of numerically-generated test signals, showing the form of the Wigner-Ville distribution and the interference terms which can be ... [truncated at 450 characters in length]|
|Author||P. D. McFadden; W. J. Wang;|
|Subject||Engineering & allied sciences Mechanical engineering|
A turbine efficiency measurement system has been developed and installed on the turbine test facility (TTF) at QinetiQ Farnborough. The TTF is an engine-scale short-duration (0.5 s run time) rotating transonic facility, which can operate as either single stage (HP vane and rotor) or 1 1/2 stage (HP stage with IP or LP vane). The current MT1 HP stage is highly loaded and unshrouded and is therefore relevant to current design trends. Implementat ... [truncated at 450 characters in length]
|Author||Paul F. Beard; Thomas Povey; Kamaljit S. Chana;|
|Subject||Aerodynamics and heat transfer Mechanical engineering Aero engines Turbomachinery hypersonics and aerodynamics|
Medial osteoarthritis (OA) and lateral OA have distinct characteristic cartilage lesion locations and knee flexion angles associated with lesion development. These types of OA are suggested to be caused by loading when the knee is in extension and mid-range flexion, respectively.
This project used subject-specific finite element (FE) models to investigate contact conditions within the extended and flexed knee. A method of creating subje ... [truncated at 450 characters in length]
|Creator||Jennifer Leigh Boyd;|
|Subject||Biomedical engineering Mechanical engineering Medical Sciences Orthopaedics|