Missions

Air quality is one of the major concerns of industrial societies. Volatile organic compounds (VOC) emitted from different sources (industrial plants, vehicles, etc.) are considered one of the causes of photochemical oxidants hazardous to human health. This gas is often removed from industrial exhaust by using gas-liquid phase change at low temperature. The present project proposes investigations on electrically enhanced condensation and mist collection in order to improve VOC gases removal.
The investigations will address i) Electric field effects on the condensation at cylindrical surfaces of different wettabilities, ii) Behavior of liquid condensate and its rejection due to the shear exerted by vapor stream, iii) Collection of rejected droplets by the DEP force, and iv) Interfacial instabilities of vapor-liquid interfaces and hydrodynamic instabilities of flows in condensers. The goal of the project is to develop an understanding on the electrically enhanced condensation system for allowing knowledge-based design of condensers usable in industry.
The project addresses questions about fundamental processes involved in electrically enhanced condensation from a mist-laden humid airflow. To disentangle the complex physics involved, we fix the following two objectives for the project.
Objective 1: To characterize the morphology of binary condensate at the condensation surfaces under electric fields,
Objective 2: To characterize the mist and VOC droplet collection in the duct and to estimate the total performance of the duct for VOC removal.

Activités

Experimental part:
- Characterization of droplets collected/condensed from humid air flow at tube surfaces of different material (Cu, Al), wettability, different size tube and different environmental parameters, and gaz flow impact.
-Determination of VOC concentration effects on condensation
- Characterization of EHD assisted condensation

Theoretical investigation:
- Global stability analysis for interfacial instabilities
- Linear analysis for the cross flow instability

Compétences

The applicant must have obtained Ph.D. degree on Engineering from a recognized university (with 2024 NIRF ranking not below 20).
The candidate should have Graduate/post-graduate degree in any combination of Mechanical/ Power/ Automobile/ Aerospace/ Chemical Engg./ Nanoscience and Technology with 60% marks or a CGPA of 6.75 and above. Candidates should be GATE-qualified.
OR Masters' degree in Physics with GATE/ CSIR-UGC NET including lectureship (Assistant Professorship) or its equivalent National Level Eligibility Test.

Desirables:
Preference will be given to candidates having experience in experimental work pertaining to Surface Science / Electrodynamics /Fluid Dynamics / image processing in Matlab or Python/ Microcontroller-based lab automation. Experience in Computational Fluid Dynamics (CFD) is considered as a plus.

Contexte de travail

The Nice Institute of Physics (INPHYNI) is a mixed research unit (UMR 7010) affiliated with the University Côte d'Azur (UCA) and the French National Center for Scientific Research (CNRS).
INPHYNI's activities are structured around three, principal axes: Waves and quantum physics; Photonics; and Nonlinear physics, complex fluids, and biophysics. Projects developed around these topics cover theoretical, fundamental, and experimental aspects as well as applications. These projects benefit especially from the support of technological platforms, (Soft Matter: Center for mechanical characterization, Center for imaging and optical characterization, Center for micro-fabrication and physico-chemical characterization),efficient administrative and technical shared services (Electronics workshop, IT services, Mechanical workshop).
Around 170 people work at INPHYNI. The laboratory is located on the Plaine du Var campus, 30 minutes from the center of Nice.
This post-doctoral contract is funded via the CEFIPRA project ( n°7009-1). Travel funds and resources for a research stay of up to 2 months, then 1 month with India collaborators are available.

Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.

Contraintes et risques

This work will be carried out in a restrictive regime zone (ZRR), as defined in Decree No. 2011-1425 relating to the protection of the scientific and technical potential of the nation (PPST). Acceptance of applications will be conditional on validation of the ZRR access request.