英国牛津大学博士后—燃气轮机气动热性能

英国牛津大学博士后—燃气轮机气动热性能

牛津大学（University of Oxford），简称“牛津”（Oxford），位于英国牛津，是一所公立研究型大学，采用传统学院制。是罗素大学集团成员，被誉为“金三角名校”、“G5超级精英大学”，全球大学校长论坛成员。

Postdoctoral Research Assistant in Gas Turbine Aerothermal Performance

University of Oxford - Department of Engineering Science

Oxford, United Kingdom

Division: Mathematical, Physical and Life Sciences Division

Department: Engineering Science

Location: Oxford Thermofluids Institute, Southwell Lab, Osney Mead, Oxford OX2 0ES

Grade and salary: Grade 7: £37,524 - £45,763 per annum

Hours: Full time

Contract type: Fixed term for 18 months

Reporting to: Dr Paul Beard

Vacancy reference: 175886

Additional information: Reimbursement of relocation costs for postdoctoral positions is only available where allowed on the project.

The role

The Oxford Thermofluids Institute at the Department of Engineering Science, Oxford University has a strong and long-standing research collaboration with Rolls-Royce plc, one of the global leaders in jet-engine design and manufacture.

Over the past few years, the Institute has significantly expanded its high TRL (test readiness level) capability, with the Oxford Turbine Research Facility (OTRF) being central in this strategy. For decades, the OTRF was operated as a short test duration facility with a long-proven track record and extensive capability to deliver world-leading aerodynamic and heat transfer measurements. Previously known as the Turbine Test Facility (TTF) at QinetiQ, the facility was relocated to the University of Oxford in 2011. Following a significant infrastructure upgrade to the facility over 2019-2023, the facility run time has been increased from from 0.5s to 60s, enabling metal effectiveness (non-dimensional metal surface temperature) and cooling effectiveness measurements at non-dimensional engine conditions. Measurements are performed using a novel infrared measurement system capable of acquiring full surface temperature maps of any high-pressure turbine rotor blade under test. An innovative approach to turbine blade manufacture, involving rapid and agile metal sintering, has also been developed to allow flexible manufacture of novel turbine blade variants suitable for scaled testing in the OTRF. Together these advances facilitate high TRL aerothermal testing of multiple component designs in a single rotor assembly, and ultimately, ranking of multiple cooling technologies on rotating turbine components prior to a multi-million-pound engine test by an engine provider, such as Rolls-Royce.

Recent research projects have included studies of effusion cooling on the rotor casing, turbine blade squealer tip design, cooled rotor blade heat transfer, combustor-turbine interactions with lean burn and entropy noise generation in the turbine. Projects have been funded by Rolls- Royce plc, Innovate UK, the EU Framework programmes and GKN Aerospace. A review of the last decade of research in the Oxford Turbine Research Facility was recently presented by Falsetti et al. 2022. A copy of this paper can be provided on request if need be.

Falsetti, C., Beard, P., Cardwell, D., & Chana, K. (2022). A Review of High-Speed Rotating HP Turbine Heat Transfer and Cooling Studies Over the Last Decade in the Oxford Turbine Research Facility. GT2022-81945. Proceedings of ASME Turbo Expo 2022, Rotterdam. doi.org/10.1115/ GT2022-81945.

Based at the Oxford Thermofluids Laboratory (Osney Mead, Oxford) the successful candidate will be responsible (as part of the OTRF team) for the aerothermal design, manufacture and testing of multiple cooled turbine components for the testing in the upgraded test facility. This will involve working closely with experts at Rolls-Royce plc in Derby. During the early stages of the design, it is expected that the post holder would spend approximately 25% of their time at Rolls-Royce. Subsistence for travel, lodging and daily costs will covered by the project.

The project will require: a proven experience in aerothermal experiments and/or turbine component design; excellent knowledge of non-dimensional aerodynamic scaling, general turbine aerodynamics and heat transfer processes; a high proficiency with MATLAB. Experience with computational fluid dynamics (CFD) and mesh generation packages (for example, HYDRA, BOXER, CFX, ANSYS); CAD and FEA packages (for example, Autodesk Inventor and SolidWorks) to create engineering drawings and reports prior to component certification testing is also highly desirable.

As well as the key requirements above, the position requires a self-motivated and driven individual who is also a quick learner, as a number of Rolls-Royce plc in-house design methods and models will need to be used. Good time management, communication, organisation and ability to work effectively in a team and individually will also be essential to deliver the project and to successfully collaborate with numerous groups within Rolls-Royce plc and the university.

The post is fully funded by the Rolls-Royce plc and the initial appointment will be for 2 years with the possibility of extension. Any questions about the post may be directed to Dr Paul Beard (paul.beard@eng.ox.ac.uk).

Responsibilities

Specific Tasks

Aerodynamic and cooling design of next generation turbine blade designs for test in Oxford Turbine Research Facility in collaboration with Rolls-Royce plc;

Stress analysis and resonance assessment of rotating assembly (turbine blades and disc) for test in Oxford Turbine Research Facility in collaboration with Rolls-Royce plc;

Feasibility study for manufacture of next generation turbine blades, oversight of component manufacture in collaboration with advanced manufacturing partners;

Design, manufacture and commissioning of novel combustor simulator for test facility, including representative turbulence flow-field, involving: collaboration with CFD research team at Oxford Thermofluids Institute, low speed tunnel testing, mechanical design and system commissioning on Oxford Turbine Research Facility;

Assist with detailed design turbine test section and associated measurement systems in collaboration with other group members; design calculations will require familiarity with FEA calculations, CAD techniques, analytical calculations, good design practices, etc.;

Data analysis and reporting of on-test research programs;

Provide advice and support to DPhil students engaged in research using the facility;

Presentation of experimental results and other activities to collaborators and wider research community;

Write high quality technical documentation in support of, and for contributions to, research publications for journal publication and presentation at conferences;

Work with equipment manufacturers in further developing the facility capabilities.

Additional Tasks

Manage own academic research and administrative activities. This involves small scale project management, to co-ordinate multiple aspects of work to meet deadlines;

Adapt existing and develop new scientific techniques and experimental protocols;

Test hypotheses and analyse scientific data from a variety of sources, reviewing and refining working hypotheses as appropriate;

Contribute ideas for new research projects;

Develop ideas for generating research income, and present detailed research proposals to senior researchers;

Collaborate in the preparation of scientific reports and journal articles and occasionally present papers and posters;

Use specialist scientific equipment in a laboratory environment;

Act as a source of information and advice to other members of the group on scientific protocols and experimental techniques;

Represent the research group at external meetings/seminars, either with other members of the group or alone;

Carry out collaborative projects with colleagues in partner institutions, and research groups;

The researcher may have the opportunity to undertake ad-hoc paid teaching (this includes lecturing, demonstrating, small-group teaching, tutoring of undergraduates and graduate students and supervision of masters projects in collaboration with principal investigators). Permission must be sought in advance for each opportunity and the total must not exceed 4 hours a week;

Any other duties appropriate with the role.

This job description should be viewed as a guide to the role and is not intended as a definitive list of duties. It may be reviewed in light of changing circumstances with consultation with the post holder.

Pre-employment screening

All offers of employment are made subject to standard pre-employment screening, as applicable to the post.

If you are offered the post, you will be asked to provide proof of your right-to-work, your identity, and we will contact the referees you have nominated. You will also be asked to complete a health declaration (so that you can tell us about any health conditions or disabilities so that we can discuss appropriate adjustments with you), and a declaration of any unspent criminal convictions.

We advise all applicants to read the candidate notes on the University’s pre-employment screening procedures, found at: www.ox.ac.uk/about/jobs/preemploymentscreening/.

Selection criteria

Essential

Hold a relevant PhD/DPhil, (or near completion) together with relevant experience;

Possess sufficient specialist knowledge in aerothermal experiments, turbine component design, non-dimensional aerodynamic scaling, general turbine aerodynamics and heat transfer processes to work within established research programmes;

High proficiency in data analysis and design using tools such as MATLAB, Computational Fluid Dynamics (CFD) software packages (for example: HYDRA, BOXER, CFX, ANSYS), FEA and CAD software packages (for example: Solidworks, Autodesk Inventor);

Ability to independently manage own academic research and associated activities;

Previous experience of contributing to publications/presentations;

Ability to contribute ideas for new research projects and research income generation;

Excellent communication skills, including the ability to write for publication, present research proposals and results, and represent the research group at meetings.

* please note that ‘near completion’ means that you must have submitted your PhD thesis.

Desirable

Experience of independently managing a discrete area of a research project;

Experience of actively collaborating in the development of research articles for publication;

High degree of self-motivation and ability to learn quickly;

Experience of measurement techniques such as: pneumatic and unsteady pressures, temperature using thermocouples and infrared thermography measurements, pressure sensitive paints, and other optical techniques;

Strong work ethic and close attention to detail;

Ability to work independently and as part of a team with good time management skills.

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