Homogenise a waste mixing tank
Orano can provide its expertise to model the homogeneity of tanks of waste with varying density and particle size containing a liquid-solid two-phase suspension.
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Homogenising a tank of waste with varying density and particle size requires the following:
- Identify the tank design and efficient blades
- Cover the mechanical loads on the agitation shaft and tank heating
- Minimise agitation energy
- Guarantee suspended solids
- Understand the complex physical phenomena at play: 3D fluid dynamics in a rotating domain, turbulence, fluid-particle and particle-particle interactions.
Orano has developed a modelling methodology:
- established using artificial intelligence driven using 1000 simulations
- confirmed by comparing with experimental data from scientific literature and mock-ups especially designed by Orano.
The due representativeness of the method was:
- demonstrated in terms of agitation power and solid concentration profiles in the tank
- confirmed by an independent university audit.
The results obtained can be used for:
- an instantaneous comparison with a precision of ~10%
- quick calculations for pre-sizing studies
- significantly reducing sizing costs in the preliminary stages of projects.
- Two-phase liquid-solid agitation in an agitated tank,
- Confirmed by comparing with experimental measurements,
- Quick calculations with a precision of 10%,
- An independent university audit confirming the method,
- Surrogate Model based on Artificial Intelligence,
- Costs and deadlines reduced from the preliminary stages of projects.
Orano has applied the methodology developed to many projects:
The sizing operations tested covered the following intervals:
- Tanks ranging from 0.1 m3 to 240 m3
- Particle sizes ranging from 20 to 2,000 µm
- Concentrations by volume ranging from 0.5% to 25%.
For more information about the method, two articles were published at scientific congresses (GLOBAL 2015 and SFGP 2017) and presentations were organised at seminars on modelling (CONVERGENCE 2015) and artificial intelligence (ISA 2019).
- Expertise in the field of agitation and modelling
- Operational FLUENT physical model applicable to all types of agitated Newtonian suspensions
- Instantaneous AI model with a precision of 10% (in the applicable domain)
