Foundation for Fundamental Research on Matter
Enschede, 7500 AE (Gelderland), 40 hours per week
Job description
We will numerically probe the connections between jamming, shear banding and microstructure in numerical simulations of sheared Brownian and non-Brownian systems with various interaction potentials.
This will be done in close collaboration with experimental projects, where the micro-structure and macroscopic rheology are probed simultaneously. Reasonable simulations times can be achieved for systems up to 105 particles. The numerics then allows for full access to the system at small and large time- (1 - 106 tc) and length-scales (1-200 d), where tc and d are the typical single particle response time and the particle diameter. Long simulation runs will be performed to scan the system response as function of, e.g., the intensity of the Brownian noise, the rigidity of the particles, or their adhesivity.
The micro-macro transition will be applied to determine the constitutive relations for flow and rheology of the jamming systems.
Research
The flow properties of a simple Newtonian liquid are set by its viscosity, whereas the mechanical properties of a crystalline solid are given by its elastic moduli. Many complex fluids show both solid and liquid-like behavior: Slurries, colloids, suspensions, pastes and foams can jam in solid-like, disordered states in which they respond essentially elastically to small applied shear stresses, but also easily yield and flow when the shear stress (i.e. tangential force per unit area) overcomes a critical yielding value.
Requirements
Required education/skills:University Graduate
We are looking for an enthusiastic, science-driven, outstanding young Master of theoretical mechanics, applied mathematics, or physics. Experience in granular or fluid dynamics, rheology, or statistical physics are required. The candidate should be theoretically strong, but also be able to perform numerical simulations and find answers to research questions with the computer.
Job type: Research / Advising
Workfield(s):
- Teaching & Research(Scientific discipline: Natural Sciences)
Organization
Foundation for Fundamental Research on Matter
The position is situated at the University of Twente, in the faculty of Engineering Technology, CTW, which has been established in 2001 as a merger of Mechanical Engineering and Civil Engineering. The faculty has approximately 320 employees including about 50 PhD students and there are about 1500 bachelor- and masterstudents, which participate in interdisciplinary research projects and programmes.
The group of Prof. Luding, Multi Scale Mechanics, deals with granular and particle systems, micro-fluidics, self-healing, sound-propagation using mostly numerical and theoretical methods. Experiments are performed in collaboration with many groups worldwide.
Conditions of employment
Estimated maximum salary per month: eur 2000 - 2500
Maximum salary amount in Euro's a month 2457
Employment basis: Temporary for specified period
Duration of the contract: four years
Maximum hours per week: 40
Additional conditions of employment:
When fulfilling a PhD position at the FOM foundation, you will get the status of junior scientist.
You will have an employee status and can participate in all the employee benefits FOM offers. You will get a contract for 4 years. Your salary will be up to a maximum of 2,457 euro gross per month. You are supposed to have a thesis finished at the end of your four year term with FOM.
A training programme is part of the agreement. You and your supervisor will make up a plan for the additional education and supervising that you specifically need. This plan also defines which teaching activities you will be responsible (up to a maximum of 10% of your time). The conditions of employment of the FOM-foundation are laid down in the Collective Labour Agreement for Research Centres (CAO-Onderzoekinstellingen), more exclusive information is available at this website under Personeelsinformatie (in Dutch) or under Personnel (in English).
General information about working at FOM can be .....
Additional Information
Additional information about the vacancy can be obtained from:
Prof.dr. S. Luding
Telephone number: 31 (0)53 489 42 12
E-mail address: s.luding@utwente.nl
Or additional information can be obtained through one of the following links:
You can apply for this job before 30-06-2008 (dd-mm-yyyy) by sending your application to:
University of Twente
Multi Scale Mechanics, TS, CTW
Prof.dr. S. Luding
PO Box 217
7500 AE Enschede
The Netherlands
E-mail: s.luding@utwente.nl
When applying for this job always mention the vacancynumber AT-74597.
Job description
We will numerically probe the connections between jamming, shear banding and microstructure in numerical simulations of sheared Brownian and non-Brownian systems with various interaction potentials.
This will be done in close collaboration with experimental projects, where the micro-structure and macroscopic rheology are probed simultaneously. Reasonable simulations times can be achieved for systems up to 105 particles. The numerics then allows for full access to the system at small and large time- (1 - 106 tc) and length-scales (1-200 d), where tc and d are the typical single particle response time and the particle diameter. Long simulation runs will be performed to scan the system response as function of, e.g., the intensity of the Brownian noise, the rigidity of the particles, or their adhesivity.
The micro-macro transition will be applied to determine the constitutive relations for flow and rheology of the jamming systems.
Research
The flow properties of a simple Newtonian liquid are set by its viscosity, whereas the mechanical properties of a crystalline solid are given by its elastic moduli. Many complex fluids show both solid and liquid-like behavior: Slurries, colloids, suspensions, pastes and foams can jam in solid-like, disordered states in which they respond essentially elastically to small applied shear stresses, but also easily yield and flow when the shear stress (i.e. tangential force per unit area) overcomes a critical yielding value.
Requirements
Required education/skills:University Graduate
We are looking for an enthusiastic, science-driven, outstanding young Master of theoretical mechanics, applied mathematics, or physics. Experience in granular or fluid dynamics, rheology, or statistical physics are required. The candidate should be theoretically strong, but also be able to perform numerical simulations and find answers to research questions with the computer.
Job type: Research / Advising
Workfield(s):
- Teaching & Research(Scientific discipline: Natural Sciences)
Organization
Foundation for Fundamental Research on Matter
The position is situated at the University of Twente, in the faculty of Engineering Technology, CTW, which has been established in 2001 as a merger of Mechanical Engineering and Civil Engineering. The faculty has approximately 320 employees including about 50 PhD students and there are about 1500 bachelor- and masterstudents, which participate in interdisciplinary research projects and programmes.
The group of Prof. Luding, Multi Scale Mechanics, deals with granular and particle systems, micro-fluidics, self-healing, sound-propagation using mostly numerical and theoretical methods. Experiments are performed in collaboration with many groups worldwide.
Conditions of employment
Estimated maximum salary per month: eur 2000 - 2500
Maximum salary amount in Euro's a month 2457
Employment basis: Temporary for specified period
Duration of the contract: four years
Maximum hours per week: 40
Additional conditions of employment:
When fulfilling a PhD position at the FOM foundation, you will get the status of junior scientist.
You will have an employee status and can participate in all the employee benefits FOM offers. You will get a contract for 4 years. Your salary will be up to a maximum of 2,457 euro gross per month. You are supposed to have a thesis finished at the end of your four year term with FOM.
A training programme is part of the agreement. You and your supervisor will make up a plan for the additional education and supervising that you specifically need. This plan also defines which teaching activities you will be responsible (up to a maximum of 10% of your time). The conditions of employment of the FOM-foundation are laid down in the Collective Labour Agreement for Research Centres (CAO-Onderzoekinstellingen), more exclusive information is available at this website under Personeelsinformatie (in Dutch) or under Personnel (in English).
General information about working at FOM can be .....
Additional Information
Additional information about the vacancy can be obtained from:
Prof.dr. S. Luding
Telephone number: 31 (0)53 489 42 12
E-mail address: s.luding@utwente.nl
Or additional information can be obtained through one of the following links:
- About the organization (http://www.msm.ctw.utwente.nl)
- About the function (http://www.fom.nl/live/vacatures/vacature.pag?objectnumber=74597)
You can apply for this job before 30-06-2008 (dd-mm-yyyy) by sending your application to:
University of Twente
Multi Scale Mechanics, TS, CTW
Prof.dr. S. Luding
PO Box 217
7500 AE Enschede
The Netherlands
E-mail: s.luding@utwente.nl
When applying for this job always mention the vacancynumber AT-74597.
