Thermal convection plays a crucial role in natural and industrial settings, from astrophysical and geophysical flows to process engineering. Roughness is omnipresent in nature, e.g. vegetation canopies with respect to atmospheric flows, and many engineering applications need to deal with rough boundaries. The paradigmatic representation of thermal convection is Rayleigh–Bénard flow; a layer of fluid heated from below and cooled from above. So far thermal convection has mainly been studied in idealized cases and most studies on the effect of roughness have focused on idealized roughness patterns, which may trigger specific flow patterns. To overcome this limitation, you will study heat transfer in turbulent flows over random sand grain roughness patterns using high-fidelity numerical simulations. Such simulations are an ideal tool to improve our fundamental insight of these flows since simulations allow us to visualize the flow and study important physical effects under controlled and reproducible conditions. In this PhD project, funded by an ERC starting grant, you will further develop and use state-of-the-art direct numerical simulations to figure out what physical mechanisms determine what surface characteristics influence the heat transport in turbulent flow over rough plates. The goal of your project is to find roughness patterns that will make the flow in the boundary layers fully turbulent and hence trigger the so-called ultimate regime of thermal convection.
You will work in the Physics of Fluids group at the University of Twente (UT) in the Netherlands. The research in our group covers a variety of aspects in fluid mechanics. Our group focuses on understanding fundamental fluid physics phenomena using experiments, simulations, and theory. Our group is embedded in the Twente Max Planck Center, the J.M. Burgers Research Center for fluid mechanics, and the MESA+ and MIRA Institutes. Our group has access to several top supercomputers in Europe and the US.
You have a background in applied physics or mechanical engineering, or in a closely related discipline. You have strong communication skills, including fluency in written and spoken English. You are enthusiastic, and highly motivated to do a PhD. Programming experience in C or Fortran is a plus.
We want you to play a key role in an ambitious project in an inspiring and stimulating international work environment.
- We provide excellent mentorship and a stimulating, modern research environment with world-class research facilities.
- You will have an employment contract for the duration of 4 years and can participate in all employee benefits the UT offers.
- The gross monthly salary starts with € 2.325,- in the first year and increases to € 2.972,- in the fourth year of your employment.
- A holiday allowance of 8% of the gross annual salary and a year-end bonus of 8.3%.
- A solid pension scheme.
- You will be embedded in a dynamic research group with colleagues working on similar topics.
- Additionally, the UT is a green campus with excellent facilities and resources for professional and personal development.
- You will follow a high-quality personalized educational program.
- The research will result in a PhD thesis at the end of the employment period.
- We strive for diversity and fairness in hiring.
Bedrijfsprofiel Universiteit Twente
The University of Twente. We stand for life sciences and technology. High tech and human touch. Education and research that matter. New technology which leads change, innovation and progress in society. The University of Twente is the only campus university of the Netherlands; divided over five faculties we provide more than fifty educational programmes. We have a strong focus on personal development and talented researchers are given scope for carrying out groundbreaking research.
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status or disability status. Because of our diversity values we do particularly support women to apply.
Within the TNW Faculty (Faculty of Science & Technology) of the University of Twente some 700 staff members and 2000 students are involved in training and research on the interface of chemical technology, applied physics and biomedical technology. Fields of application include sustainable energy, process technology and materials science, nanotechnology and technical medicine. Research, which enjoys a high profile both at home and internationally, has been accommodated in the multidisciplinary research institutes: Mesa+ Institute, TechMed Centra and Digital Society Institute. The faculty works together intensively with industrial partners and researchers in the Netherlands and abroad and conducts extensive research for external commissioning parties and funders.
Closingdate: 19 July 2019
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