Jobbtitel: Gas Turbine Pressure Losses in Film Cooling Hole

Arbetsbeskrivning:

Ref nr: 223787

Organisation: Siemens Industrial Turbomachinery. www.siemens.se

Siemens Industrial Turbomachinery, in Finspång, is now seeking for a:

M.Sc student to complete an Experimental Diploma Thesis on Gas Turbine Pressure Losses in Film Cooling Holes

Components in modern gas turbines may experience temperatures up to 2000K at rotational velocities around 2000km/h. Since no suitable materials can withstand such loads, much effort is put into the development of efficient cooling methods and these may be the difference between engine failure and success.

A typical vane cooling design consists of several branches of cooling air originating from the same source. The distribution of the air between the flow channels is determined by the counter-pressure and the pressure losses along the path. An incorrect modeled cooling system will result in an unexpected flow distribution which will yield a different temperature distribution than the one calculated. This may be causing mechanical integrity issues as well as overheating which both are possible reasons to turbine failure.

What does the Diploma Thesis entail?

The scope of the present Diploma Thesis is to design and build a new experimental test rig for investigating pressure losses on holes with a cross flow at the outlet. This is a common flow situation in gas turbines with film cooling. As a final result the student will use the experimental results for creation of a pressure loss correlation. Furthermore, the experimental data will be subjected to CFD calculations at the institute of applied thermodynamics and fluid mechanics at Linköping University which will add a further dimension to the work.

Similar test rigs have previously been used by diploma students at the fluid dynamics laboratory at Siemens, to investigate and develop correlations on a single circular orifice and impingement cooling. Both studies were accepted for publication in the Journal of Turbomachinery and/or at ASME Turbo Expo (TURBO-14-1171, GT2014-25619, GT2015-42475).

What do I need to qualify for this job?

The goal of our Diploma Thesis is to create a work of publication quality. Therefore, our demands on the student are high and he/she must be familiar with gas dynamics, dimensional similarity, numerical methods and Matlab. You must also be very driven, ambitious and prepared to work hard. Good skills in English language are required both in speech and writing.

What else do I need to know?

The work will start in the spring of 2016 and be conducted in the fluid dynamic laboratory at the Siemens gas turbine site in Finspång, Sweden. An hourly wage will be offered for 6 months. In special cases, Siemens offer long-distance student accommodation during the thesis project.

Estimated time: 1 month

Task: Literature study and test rig commission

Estimated time: 4 months

Task: Pressure loss measurements

Estimated Time: 0.5 month

Task: Building correlation

Estimated time:0.5 month

Task: Writing Diploma Thesis

How do I apply?

You are welcome to submit your application no later than March 13, 2016, via www.siemens.se/ledigajobb, ref.: 223787. Attach your resume and cover letter with your application describing your interest in our business and why you are suitable for this Diploma Thesis. The recruitment process is ongoing.

For further information, please don?t hesitate to contact Dr. Mats Kinell who will be supervising the thesis project, mats.kinell (at) siemens.com, +46-122-81583.

Arbetsgivare Namn: Siemens Industrial Turbomachinery (SIT) AB

Arbetsgivare adress: Slottsvägen 61283 Finspång

Form av kontakt:
titel : telefon 1: () telefon 2: () mobil: e-post:

Arbetsgivare telefonnummer: 0122-81000

Arbetsgivare faxnummer: 0122-19700

Jobb kort beskrivning: Chemical and physical science technicians

Land: Sweden

Område: Östergötlands län

Avtalstid: Permanent

Typ av kontrakt: Full time

Källa till jobberbjudande: Public Employment Service of Sweden(AMS)

Hur man ansöker: Other - see free text