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PhD Scholarship Position in Transient Spray Mode Fuel Injection

Applications are invited for a PhD position in mechanical engineering to join Chalmers University of Technology, Sweden. The funds for this position are available for five years. Applications are welcome before December 20, 2018.

The department of Mechanics and Maritime Sciences (M2) conducts fundamental and applied research related to sustainable energy and transport. M2 is home to world class laboratories focused on fundamental thermodynamics, combustion engineering, and flow research. The department offers a number of bachelor and graduate programs in areas including Thermo- and Fluid Dynamics, Applied Mechanics, and Automotive and Mechanical Engineering. M2 is characterized by an international environment with employees and students from around the world, and strives to maintain a close cooperation between academia, industry, and society, with a great focus on utilization.

Information about the research

The Department of Mechanics and Maritime Sciences at Chalmers University of Technology invites applications for a PhD research position starting January 1st, 2019, or as agreed. The successful candidate will be offered full-time temporary employment at Chalmers in the Division of Combustion and Propulsion Systems (CaPS). This position is limited to a maximum of five years.

This research work will involve applying cutting edge measurements to study primary breakup and spray development in pilot fuel injectors operating in partially-opening regimes for specialized ignition applications which minimize emissions by reducing injected fuel mass. Your work will identify trends and anomalous behaviour in transitional spray modes to optimize these pilot injections for robust ignition and reduced emissions. In addition, the imaging data you produce in spray chamber investigations will be correlated with data from engine tests and CFD modelling for an improved understanding of the spray and combustion processes involved in pilot ignition in dual fuel engines.

The aim is to

(1) Design a mounting strategy and optical layout for imaging early injection transients in a selection of dual-fuel pilot injectors in the Chalmers spray vessel (low T, moderate P).

(2) Apply advanced diagnostics including ballistic and high-speed shadow imaging to visualize liquid breakup and map the dynamics of spray formation in the near-nozzle region of pilot injections.

(3) Extend these measurements to high-pressure, high-temperature environments in the Chalmers spray chamber (HT/HP).

(4) Apply far-field diagnostics including planar laser-induced fluorescence and HSV to characterize the reacting spray and correlate results to near-field transient behaviour.

(5) Combine your results and CFD model results from colleagues at CaPS to form a complete description of pilot injection spray behaviour.

The goal is to contribute quantitative data for understanding spray formation in transient injection strategies that will benefit both further research and current applications in dual-fuel combustion.

Major responsibilities

Your major responsibility as a PhD student is to pursue your own doctoral studies and generate high-quality experimental data. This work includes developing scientific concepts and communicating research results both verbally and in writing. In addition to the research project, you are also expected to complete graduate courses in topics related to your research.

Full-time temporary employment.The position is limited to a maximum of five years.

Qualifications

A suitable background is a Master of Science degree (with at least 240 higher education credits) in engineering physics or mechanical engineering, or a 4-year B.Sc. degree from an engineering school in the USA. The position requires good oral and written communication skills in English. Experience in optics, laser-based diagnostics, image analysis, and good programming skills are considered especially meriting.

Chalmers offers a cultivating and inspiring working environment in the dynamic city ofGothenburg.

Read more aboutworking at Chalmersand ourbenefitsfor employees.

Application procedure

The application should be marked with Ref 20180576 and written in English.

CV: (Please name the document: CV, Family name, Ref. number)

CV

Other, for example previous employments or leadership qualifications and positions of trust.

Two references that we can contact.

Personal letter: (Please name the document as: Personal letter, Family name, Ref. number)

1-3 pages where you introduce yourself and present your qualifications.

Previous research fields and main research results.

Future goals and research focus.Are there any specific projects and research issues you are primarily interested in?

Copies of bachelor and/or master's thesis.

Attested copies and transcripts of completed education, grades and other certificates, eg. TOEFL test results.

Application deadline: 20 December 2018

Assoc. Prof., David Sedarsky,

sedarsky@chalmers.se,

+46 31 772 83 60


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