Tag-arkiv: Luleå University

Two PhD positions in fluid mechanics in the field of hydropower Lulea


Ref 602-2019

The Division of Fluid and Experimental Mechanics within the Department of Engineering Sciences and Mathematics at Luleå University of Technology (LTU) conducts research and teaching in the field of hydropower.  Hydropower is the largest source of renewable energies in the world and accounts for about 17% of the electricity production worldwide. It is facing new technical challenges with the introduction of intermittent renewable energy resources, refurbishment of aging machines, adapting to the climate changes and satisfying new regulations.

The Division of Fluid and Experimental Mechanics offers two PhD positions in the subject fluid mechanics with application to hydraulic turbines. The positions are part of a larger European project with participants from Spain, Norway and Sweden. 

Subject description
The subject fluid mechanics works with turbulent, multiphase and porous flow coupled to industrial manufacturing methods, flow optimization and flow design for energy applications as well as magneto-hydrodynamic.

The Division has via the John Field Laboratory access to state of the art measurement methods and large computational resources.

Duties
The project aims to develop a novel technique to mitigate the pressure pulsations arising in hydraulic turbines at certain operating conditions. Both numerical and experimental investigations will be performed at different scales: from the laboratory to full-scale machine’s scales.

Both PhD positions deal with numerical simulations and stability analysis of the flow in hydraulic turbines. They may also contain experimental investigations based on the chosen candidate’s skills and interest.

The project may imply measurements at different facilities in Sweden and Norway where longer visits are planned to perform the measurements. The Ph.D. positions are four years. Some teaching and subject related responsibility may be included.

Qualifications
Applicants should have 300 credits in engineering physics, mechanical engineering, space technology, energy technology or equivalent of which 60 credits at the advanced level with several courses linked to fluid mechanics. Applicants should also have a good knowledge of both spoken and written English. Knowledge in fluid numerical simulations, stability analysis, experimental fluid mechanics, hydraulic turbines, turbine model testing, prototype testing and vortex flows is a merit.

See also; Study plans for postgraduate education in fluid mechanics

Our research group consists mostly of men why we are happy to see female applicant. Provided that the qualifications are otherwise equal, the underrepresented gender will be given precedence.

In case of different interpretations of the English and Swedish versions of this announcement, the Swedish version takes precedence.

Information
For questions concerning the project you are welcome to contact Professor Michel Cervantes, +46 920-49 3014, e-mail, michel.cervantes@ltu.se

For questions concerning the Division of Fluid and Experimental Mechanics please contact Professor Staffan Lundström, +46 920-49 2392, e-mail, staffan.lundstrom@ltu.se

Union representatives:
SACO-S Christer Gardelli, 0920-49 1809 christer.gardelli@ltu.se    
OFR-S Lars Frisk, 0920-49 1792 lars.frisk@ltu.se

The Luleå University of Technology works actively with gender equality and diversity that contributes to a creative study and work environment. The university’s values are based on respect, openness, cooperation, trust and responsibility.

Application
Please apply for the positions by clicking on the application button below and attach your cover letter, CV/resume and copies of certificates and diplomas.
Application must be written in English or Swedish. Diplomas must be verified and translated to English or Swedish. Please mark your application with the reference number below.

Reference number: 602-2019
Final day to apply: 2019-04-12

Read the job description at the university homepage

Apply

Post expires on Friday April 12th, 2019

PhD-Student Position in Machine Elements

Ref 251-2019

BACKGROUND
The research subject Machine Elements belongs to the Department of Engineering Sciences and Mathematics (TVM) at Luleå University of Technology (LTU). The research within the field of Machine Elements is mainly focused on tribology and its applications. The research group consists of more than 30 researchers and doctoral students and is one of the leading tribology research groups in Europe. Activities include many aspects of tribology, e.g. materials tribology, lubrication and lubricants, condition monitoring, biotribology, computational tribology and machine component tribology. The research is both of fundamental and applied in nature and is often carried out in close cooperation with Swedish and international industry.

The group is responsible for theoretical and project courses taught in the university’s Master of Science, Bachelor of Science and Master’s programs. Most of the teaching is within the Mechanical Engineering program and the Erasmus Mundus Masters program in tribology (TRIBOS).

See the group’s webpage on http://www.ltu.se/research/subjects/Maskinelement?l=en.

We are currently seeking a PhD-student that can help us to further develop research within the field of Machine Elements.

SUBJECT DESCRIPTION
Machine Elements comprises the analysis and optimization of machine components and component systems to enhance performance, longevity, energy-efficiency and reliability and to reduce environmental impact. Particular emphasis is placed on issues in the field of tribology.

PROJECTDESCIRIPTION
The project is about developing and applying self-powered sensors for tribological applications. A sensor that produces its own power has a large role to play in the advancement of wearables, Internet of Things, Industry 4.0 etc. The focus in this project is to apply this technology on machine components to give information about the operation. This could be general machine health as well as specific fault and failure signals. The aim of the project is to develop knowledge and understanding of the relationship between tribological signals and machine components working status.

The PhD studies are 4 year, fulltime. Administration and/or teaching up to maximum 20% may be added. 

QUALIFICATIONS
Applicants must have a master’s degree in science or engineering (Materials science, mechanical engineering, etc.), or equivalent.  Good skills in oral and written communication in English is also a requirement.

The following selection criteria apply:

  • Background relevant to the project in question,
  • The quality of the applicant’s master thesis,
  • Personal qualities relevant to research education

Currently we are most men in the research field. Given that the qualifications are equal, the underrepresented gender will be given priority in this recruitment.

For further information about a specific subject see; General curricula for the Board of the faculty of science and technology

INFORMATION
For further information, you are welcome to contact:
Associate Professor Yijun Shi, +46-(0)920-492064, yijun.shi@ltu.se.
Professor Pär Marklund, +46-(0)920-492415, Par.Marklund@ltu.se .
Senior lecturer Marcus Björling, +46-(0)920-491281, marcus.bjorling@ltu.se .

Union representatives:
SACO – Christer Gardelli, christer.gardelli@ltu.se +46 920-491809
OFR – Lars Frisk, lars.frisk@ltu.se +46 920-491792

Luleå University of Technology is actively working on equality and diversity that contributes to a creative study- and work environment. The University’s core values ​​are based on respect, openness, cooperation, trust and responsibility.

In case of different interpretations of the English and Swedish versions of this announcement, the Swedish version takes precedence.

APPLICATION
We prefer that you apply for this position by clicking on the apply button below. The application should include a CV, personal letter and copies of verified diplomas from high school and universities. Your application, including diplomas, must be written in English or Swedish. Mark your application with the reference number below.

Reference number: 251-2019
Final day to apply: 2019-04-30

Read the job description at the university homepage

Apply

Post expires on Tuesday April 30th, 2019

PhD- Student in Energy Engineering with special emphasis on gasification of biomass Lulea


Ref 241-2019

The Division of Energy Science at Luleå University of Technology (LTU) has an open PhD position in the subject of Energy Engineering. Your research studies will be focused on optimisation of burner systems for entrained flow gasification of biomass.

BACKGROUND
The subject of Energy Engineering at the Division of Energy Science belongs to the Department of Engineering Sciences and Mathematics. The Department of Engineering Sciences and Mathematics includes a wide range of subjects and has many successful research groups, recognized degree programs, and respected teachers. Research in the department is related to the materials science of metals, composites, and wood; energy engineering issues regarding processes like gasification and combustion; flow phenomena; how to optimize structures with respect to function and how they are produced; and many other issues.

At the subject of Energy Engineering, we work closely with companies/industries in both research and student projects. The research conducted has high international standards, and we collaborate with researchers around the world.

SUBJECT DESCRIPTION
Energy engineering includes the development of technologies and processes for a sustainable energy supply.  The research focuses on bioenergy technologies and energy efficiency in industry and society.

DUTIES
The purpose of the project is to show that acoustic pumping can be used to reduce soot formation in entrained flow gasifiers and to develop a scalable burner design that facilitates future upscaling in commercial projects. The gasification principle which will be used is called entrained flow gasification, which means that fuel in powder form is fed into a hot reactor as a suspension with a small amount of oxidant (air or oxygen). As a result the solid fuel is converted to an energy-rich gas, which can be used for the production of fuels and chemicals.

The project is mainly experimental using advanced measurement methods, but CFD calculations will also be used for design of burner geometries. The project is part of a collaboration with Karlsruhe Institute of Technology (KIT), which means that some experiments will be carried out in Germany. Most of the project will, however, be carried out at LTU’s campus in Luleå.

Energy Engineering is heavily involved in the competence centre Swedish Biomass Gasification Centre (SFC) and the project will therefore interact with other theoretical and experimental projects that are part of SFC.

A doctoral student’s main responsibility is to pursue doctoral studies with the aim to successfully defend a doctoral dissertation. The position includes a fulltime fixed-term employment for 4 years. The position may include departmental duties (typically teaching) with up to 20% of full-time employment. The location is Luleå.

QUALIFICATIONS
In order to be eligible you must have a Master of Science degree in mechanical engineering, engineering physics or similar. You should have a strong interest in fluid dynamics, optical measurement methods (e.g. PIV), heat & mass transfer and combustion science. You should both be a good team player and have the ability to work independently and take own initiatives. Strong written and oral communication skills in English are required, skills in Swedish and/or German is an advantage.

See also the general curriculum for education at post-graduate level in energy engineering: http://www.ltu.se/research/Utbildning-pa-forskarniva/Studieplaner/Allmanna-studieplaner-Teknisk-fakultetsnamnd/Energiteknik-1.106334?l=en

INFORMATION
For further information, please contact Professor Rikard Gebart, + 46 (0)920-492196, rikard.gebart@ltu.se   

Union representatives:
SACO-S Christer Gardelli, (+46)920-49 1809 Christer.Gardelli@ltu.se
OFR-S Lars Frisk, (+46)920-49 1792 lars.frisk@ltu.se

Luleå University of Technology is actively working on equality and diversity that contributes to a creative study- and work environment. The University’s core values ​​are based on respect, openness, cooperation, trust and responsibility.

In case of different interpretations of the English and Swedish versions of this announcement, the Swedish version takes precedence.

APPLICATION
You apply for this position by clicking on the apply button below. The application should include a CV, personal letter and copies of verified diplomas from high school and universities. Your application, including diplomas, must be written in English or Swedish. Mark your application with the reference number below.

Reference: 241-2019
Application deadline: April 18, 2019

Read the job description at the university homepage

Apply

Post expires on Thursday April 18th, 2019

Post-doctoral position in fluid mechanics in the field of hydropower Lulea


Ref 603-2019

The Division of Fluid and Experimental Mechanics within the Department of Engineering Sciences and Mathematics at Luleå University of Technology (LTU) conducts research and teaching in the field of hydropower.  Hydropower is the largest source of renewable energies in the world and accounts for about 17% of the electricity production worldwide. It is facing new technical challenges with the introduction of intermittent renewable energy resources, refurbishment of aging machines, adapting to the climate changes and satisfying new regulations.

The Division of Fluid and Experimental Mechanics now offers a post-doctoral position in the subject fluid mechanics with application to hydraulic turbines. The position is part of a larger European project with participants from Spain, Norway and Sweden. 

Subject description
The subject fluid mechanics works with turbulent, multiphase and porous flow coupled to industrial manufacturing methods, flow optimization and flow design for energy applications as well as magneto-hydrodynamic.

The Division has via the John Field Laboratory access to state of the art measurement methods and large computational resources.

Duties
The project aims to develop a novel technique to mitigate the pressure pulsations found in hydraulic turbines at certain operating conditions. Both numerical and experimental investigations will be performed at different scales, from the laboratory to full-scale machine’s scales.

The chosen candidate will be responsible for the implementation and experimental investigation of the novel technique where pressure, stress and velocity measurements will be performed. The candidate will participate to the supervision of PhD students involved in the project. The candidate may also work with numerical simulations and stability analysis function of her/his skills and interest.

The project implies measurements at different facilities in Sweden and Norway where longer visits are planned to perform measurements. The position is 2 years with the possibility for 2 additional years. Some teaching and subject related responsibility may be included.

Qualifications
You received a PhD degree in fluid mechanics during the last 3 years or will defend your PhD thesis during 2019 in the area of experimental fluid mechanics. A good knowledge of English is mandatory. Knowledge in fluid numerical simulations, stability analysis, hydraulic turbines, turbine model testing, prototype testing and vortex flows is a merit.

Our research group consists mostly of men why we are happy to see female applicant. Provided that the qualifications are otherwise equal, the underrepresented gender will be given precedence.

In case of different interpretations of the English and Swedish versions of this announcement, the Swedish version takes precedence.

Information
For questions concerning the project you are welcome to contact Professor Michel Cervantes, +46 920-49 3014, e-mail, michel.cervantes@ltu.se

For questions concerning the Division of Fluid and Experimental Mechanics you may contact Professor Staffan Lundström, +46 920-49 2392, e-mail, staffan.lundstrom@ltu.se

Union representatives:
SACO-S Christer Gardelli, +46 920-49 1809 christer.gardelli@ltu.se    
OFR-S Lars Frisk, +46 920-49 1792 lars.frisk@ltu.se

Luleå University of Technology works actively with gender equality and diversity that contributes to a creative study and work environment. The university’s values are based on respect, openness, cooperation, trust and responsibility.

Application
Please apply for the position by clicking on the application button below and attach your cover letter and CV/resume and copies of Certificates and diplomas.
Application must be written in English or Swedish. Diplomas must be verified and translated to English or Swedish. Please mark your application with the reference number below.

Reference number: 603-2019
Final day to apply: 2019-04-12

Read the job description at the university homepage

Apply

Post expires on Friday April 12th, 2019

PhD-Student position in Energy Engineering with special emphasis in fluidized bed combustion and gasification of biomass and waste fuels Lulea


Ref 718-2019

The Division of Energy Science at Luleå University of Technology (LTU) has an open Ph.D. position in the subject of Energy Engineering. In your research, you will develop combustion and gasification processes for effective and sustainable conversion of biomass and waste fuels. You will both work with researchers from different fields (energy- and chemical engineering), universities/institutes (national and international) and with equipment manufacturers.

Background
The subject of Energy Engineering at the Division of Energy Science belongs to the Department of Engineering Sciences and Mathematics. At the subject of Energy Engineering, we work closely with companies/industries in both research and student projects. The research conducted has high international standards, and we collaborate with researchers around the world.

Subject description
Energy engineering includes the development of technologies and processes for sustainable energy supply.  The research focuses on bioenergy technologies and energy efficient use in industry and society.DutiesAs a Ph.D. student, you will work for a doctoral degree as the final goal, according to the goals specified in the Higher Education Ordinance. In parallel with your thesis work, you will also undertake courses during your research education.

Your Ph.D. project is a part of an ongoing project funded by the Swedish Energy Agency/Swedish Research Council. The purpose of your research is to improve the operational and economic performances of fluidized bed biomass combustors and gasifiers to be used for heat, power, and transportation biofuel production. The overall aim is to design bed particle layers that 1) reduce the risk for bed agglomeration, bed material deposition and fouling in fluidized bed combustion/gasification (FBC/FBG) of biomass fuels, and 2) provide a positive catalytic influence on internal tar reforming and thus increasing the quality of the raw syngas in the FBG process.

You will do gasification/combustion experiments in lab-, pilot- and full-scale plants and characterize the produced bed particle layers with different chemical- and physical analytical methods. You will also formulate models that can predict the bed particle layer characteristics for different biomass fuel and bed material combinations. In your research, you will collaborate with researchers from Luleå University of Technology, Umeå University and Technical University in Wien/Bioenergy 2020+.

A doctoral student’s main responsibility is to pursue doctoral studies with the aim to successfully defend a doctoral dissertation. The position includes a fulltime fixed-term employment for 4 years (maximum 5 years). The position may include departmental duties (such as teaching) with up to 20% of fulltime.

QualificationsIn order to be eligible for the position you must have a degree of Master of Science in chemical engineering, material science, applied physics, or similar specializations and a strong interest in thermochemical processes. You should be a good team player and have the ability to take initiative. You should also have good knowledge of the English language and good oral and written proficiency. Experiences in high-temperature chemistry and thermochemical conversion are considered as advantages.

Given equal qualification, priority will be given to the under-represented gender.

For further information about a specific subject see; General curricula for the Board of the faculty of science and technology

Information
For further information, please contact Chaired Prof. Marcus Öhman, Head of Division, + 46-920-491977, marcus.ohman@ltu.se.  

Union representatives:
SACO-S Christer Gardelli, (+46)920-49 1809 Christer.Gardelli@ltu.se
OFR-S Lars Frisk, 0920-49 1792 lars.frisk@ltu.se

Luleå University of Technology is actively working on equality and diversity that contributes to a creative study- and work environment. The University’s core values ​​are based on respect, openness, cooperation, trust and responsibility.

In case of different interpretations of the English and Swedish versions of this announcement, the Swedish version takes precedence.

For more information about living and working in Luleå and Sweden, please visit our homepage: https://www.ltu.se/ltu/International-staff?l=en

Application
We prefer that you apply for this position by clicking on the apply button below. The application should include a CV, personal letter and copies of verified diplomas from high school and universities. Your application, including diplomas, must be written in English or Swedish. Mark your application with the reference number below.

Deadline for application: 30 April 2019

Reference number: 718-2019

Read the job description at the university homepage

Apply

Post expires on Tuesday April 30th, 2019