Overview
The Knudsen pump is a pump without moving parts that works for a gas under rarefied conditions (at low pressure and/or at micro scale). Typical Knudsen pumps are long channels with a periodic structure consisting of alternately arranged narrow and wide channels, with a periodic temperature distribution. An alternative solution consists in replacing the narrow segments with curved channels with the same width as the wide segments. Numerical results obtained by the DSMC method are reported in the literature for such a configuration (see Aoki K. et al., “A diffusion model for rarefied flows in curved channels”, Multiscale Model. Simul., 2008, 6(4), pp. 1281-1316). The goal of the project is to design and fabricate a prototype of Knudsen pump based on this principle, and from its experimental analysis to discuss/validate the numerical simulations results.
Based on the theoretical models from the literature, and in collaboration with Prof. Aoki from the
Department of Mechanical Engineering and Science at Kyoto University, a first prototype at millimetric scale and low pressure will be designed. This prototype will be manufactured at the Karlsruhe Institute of Technology. The experimental facilities at the National Institute of Applied Sciences of Toulouse will be adapted for controlling the Knudsen pump and measuring its performances. The experimental analysis should lead to improved models and optimisation of the pump at millimetric scale.
At the end of the project, a Knudsen pump at micro scale should be designed, taking into account the constraints of microfabrication. For this step, the researcher will benefit from the expertise of the Laboratory for Analysis and Architecture of Systems in Toulouse, LAAS, Toulouse
(http://www.laas.fr) which is specialised in manufacturing microdevices and microsensors.
This project is a collaboration between 2 GASMEMS partners: the National Institute of Applied
Sciences (INSA), Toulouse, France, (http://www.insa-toulouse.fr/en/index.html), which specialises in experimental analysis of gas microflows, and Karlsruhe Institute of Technology (KIT-IMTV Institute for Micro Process Engineering, http://www.kit.edu/) which is specialised in manufacturing micro heat exchangers, fluidic micro-devices and chemical micro-reactors. In addition, the project will benefit from the expertise of the Department of Mechanical Engineering and Science, Kyoto University, in the field of numerical simulation of Knudsen pumps and from LAAS Toulouse in the field of microfabrication techniques. The researcher will spend the majority of the time at INSA Toulouse, with a 5-month exchange at KIT.
Eligibility
At the time of their appointment, applicants should:
· be in possession of a doctoral degree, or have at least four years of full-time equivalent research experience after obtaining the degree which formally allowed them to embark on a doctorate
· be within the first five years of their career in research (including PhD time);
· be of any nationality, except a national of France. In the case of an applicant holding more than one nationality (including France citizenship), he/she will be eligible if he/she has not resided in France during the previous 5 years;
· not have resided or carried out his/her main activity in France for more than 12 months in the
3 years immediately prior to his/her appointment. Short stays such as holidays are not taken into account;
· if they hold French nationality, be legally resident and have their main activity in a country not
from the EU and not belonging to the list given at
ftp://ftp.cordis.europa.eu/pub/fp7/docs/third_country_agreements_en.pdf for at least three of
the last four years immediately prior to their appointment;
· if in doubt about their eligibility for this position, contact Prof. Stéphane Colin, whose contact details are listed below.
Requirements
This is a challenging and highly rewarding course of study and therefore the successful candidate
should have the following qualifications:
· a Doctorate degree (PhD) with high standard results in Fluid Mechanics, Physics, or Engineering;
· a good background in fluid mechanics;
· good skills in experimental research;
· excellent communication skills and written/verbal knowledge of the English language;
· high autonomy and adaptability skills;
· if the candidate has some experience in vacuum science and/or in experimental techniques
adapted to fluid flows, this would be a benefit.
Financial information / Salary
Annual gross salary: 54,288 €
Annual mobility allowance: 6,264 € (for a researcher without family obligations) to 10,022 € (for a researcher with family obligations)
Travel allowance: between 250 and 2,500 € per year, depending on the researcher’s country of origin Career exploratory allowance: a single payment of 2,000 €
Contacts
Please contact either of the following for more information about the post or your eligibility to apply for
it:
Prof Stéphane Colin: stephane.colin@insa-toulouse.fr
Dr Lucien Baldas: lucien.baldas@insa-toulouse.fr
Application procedure
Applications for this position, including a Curriculum Vitae or Resume with the contact details of three referees, a covering letter, attestation of the diplomas/doctorate degree and final transcript of academic records, should be sent via email, using the reference number GASMEMS-ER5 in the subject line, to:
Prof Stéphane Colin: stephane.colin@insa-toulouse.fr
Please kindly mention Scholarization.blogspot.com when applying for this scholarship
The Knudsen pump is a pump without moving parts that works for a gas under rarefied conditions (at low pressure and/or at micro scale). Typical Knudsen pumps are long channels with a periodic structure consisting of alternately arranged narrow and wide channels, with a periodic temperature distribution. An alternative solution consists in replacing the narrow segments with curved channels with the same width as the wide segments. Numerical results obtained by the DSMC method are reported in the literature for such a configuration (see Aoki K. et al., “A diffusion model for rarefied flows in curved channels”, Multiscale Model. Simul., 2008, 6(4), pp. 1281-1316). The goal of the project is to design and fabricate a prototype of Knudsen pump based on this principle, and from its experimental analysis to discuss/validate the numerical simulations results.
Based on the theoretical models from the literature, and in collaboration with Prof. Aoki from the
Department of Mechanical Engineering and Science at Kyoto University, a first prototype at millimetric scale and low pressure will be designed. This prototype will be manufactured at the Karlsruhe Institute of Technology. The experimental facilities at the National Institute of Applied Sciences of Toulouse will be adapted for controlling the Knudsen pump and measuring its performances. The experimental analysis should lead to improved models and optimisation of the pump at millimetric scale.
At the end of the project, a Knudsen pump at micro scale should be designed, taking into account the constraints of microfabrication. For this step, the researcher will benefit from the expertise of the Laboratory for Analysis and Architecture of Systems in Toulouse, LAAS, Toulouse
(http://www.laas.fr) which is specialised in manufacturing microdevices and microsensors.
This project is a collaboration between 2 GASMEMS partners: the National Institute of Applied
Sciences (INSA), Toulouse, France, (http://www.insa-toulouse.fr/en/index.html), which specialises in experimental analysis of gas microflows, and Karlsruhe Institute of Technology (KIT-IMTV Institute for Micro Process Engineering, http://www.kit.edu/) which is specialised in manufacturing micro heat exchangers, fluidic micro-devices and chemical micro-reactors. In addition, the project will benefit from the expertise of the Department of Mechanical Engineering and Science, Kyoto University, in the field of numerical simulation of Knudsen pumps and from LAAS Toulouse in the field of microfabrication techniques. The researcher will spend the majority of the time at INSA Toulouse, with a 5-month exchange at KIT.
Eligibility
At the time of their appointment, applicants should:
· be in possession of a doctoral degree, or have at least four years of full-time equivalent research experience after obtaining the degree which formally allowed them to embark on a doctorate
· be within the first five years of their career in research (including PhD time);
· be of any nationality, except a national of France. In the case of an applicant holding more than one nationality (including France citizenship), he/she will be eligible if he/she has not resided in France during the previous 5 years;
· not have resided or carried out his/her main activity in France for more than 12 months in the
3 years immediately prior to his/her appointment. Short stays such as holidays are not taken into account;
· if they hold French nationality, be legally resident and have their main activity in a country not
from the EU and not belonging to the list given at
ftp://ftp.cordis.europa.eu/pub/fp7/docs/third_country_agreements_en.pdf for at least three of
the last four years immediately prior to their appointment;
· if in doubt about their eligibility for this position, contact Prof. Stéphane Colin, whose contact details are listed below.
Requirements
This is a challenging and highly rewarding course of study and therefore the successful candidate
should have the following qualifications:
· a Doctorate degree (PhD) with high standard results in Fluid Mechanics, Physics, or Engineering;
· a good background in fluid mechanics;
· good skills in experimental research;
· excellent communication skills and written/verbal knowledge of the English language;
· high autonomy and adaptability skills;
· if the candidate has some experience in vacuum science and/or in experimental techniques
adapted to fluid flows, this would be a benefit.
Financial information / Salary
Annual gross salary: 54,288 €
Annual mobility allowance: 6,264 € (for a researcher without family obligations) to 10,022 € (for a researcher with family obligations)
Travel allowance: between 250 and 2,500 € per year, depending on the researcher’s country of origin Career exploratory allowance: a single payment of 2,000 €
Contacts
Please contact either of the following for more information about the post or your eligibility to apply for
it:
Prof Stéphane Colin: stephane.colin@insa-toulouse.fr
Dr Lucien Baldas: lucien.baldas@insa-toulouse.fr
Application procedure
Applications for this position, including a Curriculum Vitae or Resume with the contact details of three referees, a covering letter, attestation of the diplomas/doctorate degree and final transcript of academic records, should be sent via email, using the reference number GASMEMS-ER5 in the subject line, to:
Prof Stéphane Colin: stephane.colin@insa-toulouse.fr
Please kindly mention Scholarization.blogspot.com when applying for this scholarship
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