Sensitivity and Uncertainty Analysis in a Circulating Fluidized Bed Reactor Modeling

Design of a Medium-scale Circulating Fluidized Bed Reactor for Chlorination of processed Aluminum Oxide

“…As shown in Figure 4, by visual observation and studying the particle mass flow rate through the reactor, CPFD simulation shows that the maximum height particles can achieve at steady-state is around 10 meters, which are slightly higher than the calculated value of 7 m Section 3.1.4. This may happen because of the model uncertainties (Barahmand et al, 2021a). However, the cylindrical reactor height selected is sufficient to contain the particles once it reaches a steady state.…”

“…The reactor has been optimized based on the turbulent regime (fast fluidization), with four internal cyclones designed based on the Lapple cyclone design (Barahmand et al, 2021a). The reactor diameter has been kept the same as before (2.4 m).…”

Comprehensive Local Sensitivity Analysis of the Adm1-Based Anaerobic Digestion Process

“…To have a more realistic and robust model, it is crucial to define the fuzzy values accurately for the parameters with higher sensitivity [21]. Moreover, in complex systems such as ADM1, many inputs and outputs interact with each other.…”

“…Zhou and Lin defined the local sensitivity analysis as "the assessment of the local impact of input factors variation on a model response by concentrating on the sensitivity in the vicinity of a set of factor values" [22]. Sensitivity analysis can be defined by the sensitivity index (SI) defined below [23]:…”

CPFD Simulations on a Chlorination Fluidized Bed Reactor for Aluminum Production: an Optimization Study

“…In continuation of the studies on a New Sustainable Aluminum Production (NSAP) process (Barahmand, Aghaabbasi, et al, 2021;Barahmand, Jayarathna, et al, 2021d, 2021a, 2021c, 2021b, this optimization study aims to design an industrial alumina chlorination fluidized bed reactor (isothermally) to achieve the minimum particle outflow and to improve the hydrodynamics inside the reactor by minimizing the channeling effect in the dense phase bed.…”