Objective
IT IS GENERALLY AGREED THAT THE MAIN PROCESSES GOVERNING SOLUTE TRANSPORT IN THE GEOSPHERE ARE : CONVECTION, HYDRODYNAMIC DISPERSION MOLECULAR DIFFUSION (FICK'S LAW) AND INTERACTION WITH THE ROCK MATRIX (ADSORPTION - DESORPTION). IN MOST CASES, WHEN MATHEMATICAL MODELS ARE DESIGNED TO TAKE INTO ACCOUNT ONLY THESE PHYSICAL PHENOMENA, OR EVEN JUST A FEW OF THEM, THEY WILL GIVE A TRUE REPRESENTATION OF REALITY.
IN THE SCIENCE OF NON-EQUILIBRIUM THERMODYNAMICS, WHICH DESCRIBES THE EVOLUTION OF THE SYSTEMS CAUSED BY THERMODYNAMIC FORCES, THIS METHOD DOES AWAY WITH NON-DIAGONAL COUPLINGS OF THE FORCES AND FLUXES. HOWEVER, THIS SIMPLIFICATION IS ONLY VALID IF ONE CAN BE SURE THAT THE EFFECT OF THE COUPLINGS IS NEGLIGIBLE, AND IT IS PROBABLE THAT THE SPECIAL CONDITIONS PREVAILING IN THE VICINITY OF RADIOACTIVE WASTE, IN PARTICULAR THE HIGH TEMPERATURE GRADIENTS, EXCLUDE THE USE OF THE SIMPLIFIED APPROACH.
THE OBJECTIVE OF THIS STUDY IS THEREFORE TO INVESTIGATE THE EFFECTS OF THESE PHYSICAL PHENOMENA AND TO EXPRESS THEM MATHEMATICALLY AS WELL AS TO EVALUATE THE IMPORTANCE OF THEIR ROLE IN THE AFOREMENTIONED SPECIAL CONDITIONS.
The present report describes the work carried out under the framework of the study of nondominant transfer of radionuclides in the geosphere. The objective of the work is to qualitatively assess (and quantitatively through the use of numerical models) the ensemble of phenomena of transport which may play a role in the processes of radionuclide concentration in radioactive waste storage. In effect, the dominant physical phenomena are noticably taken into account in these models which are validated in the majority of cases.
1. THEORETIC RESEARCH :
THIS PHASE MAKES A REVIEW OF THE PRINCIPAL PHENOMENA LIKELY TO PLAY A PART IN THE TRANSFERS OCCURING IN NATURAL MEDIA AND TO EXTRACT AND ADAPT THEIR MATHEMATICAL EXPRESSIONS.
2. BIBLIOGRAPHIC STUDY :
THE BIBLIOGRAPHY, AS EXTENSIVE AS POSSIBLE, IS UNDERTAKEN ON THESE PHENOMENA, IN ORDER MAINLY TO HAVE AN IDEA OF THE SCALE OF THE PARAMETERS INVOLVED.
3. APPLICATIONS :
THE RESULTS OBTAINED WILL BE APPLIED TO THE RADIONUCLIDES TRANSFER IN A GEOLOGICAL MEDIUM, PARTICULARY TO A POROUS MEDIUM. CALCULATIONS WILL BE MADE (1D OR 2D) TO SHOW THE RELATIVE IMPORTANCE OF THE DIFFERENT TRANSFERS, ESPECIALLY REGARDING THE THERMAL EFFECT OF THE DISPOSAL.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology other engineering and technologies nuclear engineering nuclear waste management
- natural sciences physical sciences thermodynamics
- natural sciences chemical sciences nuclear chemistry radiation chemistry
- social sciences law
- natural sciences mathematics applied mathematics mathematical model
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
92265 Fontenay-aux-Roses
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.