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In this paper, a numerical characterization of a first stage of a high capacity multistage centrifugal pump was performed for very high flow rates. A particular emphasis was placed on the diffuser design procedure. For this purpose, the equations of the continuity and the Navier-Stokes accounting for the boundary conditions were used by mean of ANSYS-CFX code to describe and to simulate the complex...
The engineering of cyber physical systems requires holistic simulation perspectives. To cope with the complexity of these systems, we aim to provide a simulation methodology that is efficient regarding model complexity. The required holistic perspective is reached on a coarse level, which is co-simulated with multiple detailed models of some areas of the system that are of particular interest to the...
Managing risks in supply chains is challenging for most companies, given the globalisation process which is strengthening the production constraints and also introducing more procurements risks. This is especially difficult for smaller companies because they generally lack resources to develop a specific expertise or buy expensive tools. Our research aims at addressing those issues by proposing an...
This paper introduces the development of a distributed air-defense engagement simulation model based on data distribution service (DDS). To design and develop effectively, system developers need a high-resolution engagement simulation including complex engineering-level models and operational scenario models. Increasing the resolution of the model results in the growing model's complexity which requires...
In almost all industrial fields such as automobile and aerospace industries, in recent years, the precisely complicated shapes of channel and frame parts are increasingly applied. To fabricate these parts, the U-bending process being a common sheet-metal forming process is widely employed. However, the asymmetrical U-bending process lacks researches. Therefore, in this study, the effects of asymmetrical...
Tropospheric ozone in high concentrations can cause health problems. A reliable alerting system is needed. In this paper we present the hybrid model that can be used for ozone forecasting in urban microlocations. The hybrid model is combined from meteorological and air-quality models (covering large geographical 3-dimensional space), and empirical model (offering good local forecasts), implemented...
For numerical simulations in a sphere, we have recently proposed a new spherical grid system called Yin-Yang-Zhong grid. The Yin-Yang-Zhong grid is composed of three components — Yin, Yang, and Zhong — that are combined to cover a spherical region with partial overlaps on their borders. Mutual interpolations are applied to sew the components together, following the overset grid methodology. We review...
Amongst real-time scheduling community, several methods aim at enhencing the performance of the control. Subtask scheduling is one of the embedded convenient methods that reduce the input-output latency in the control loops. The predictive-Delay control is a new method based on input-output latency prediction in order to reduce the impact of this artefact on the quality of the control. Combining both...
In gene dynamics modeling, parameters of Boolean networks are identified from continuous data under various assumptions expressed by logical constraints. These constraints may restrict the dynamics of the network to the subclass of canalyzing functions, which are known to be appropriate for genetic networks. This paper introduces a high performance algorithm, which solves the parameter identification...
The cost estimation process, carried out by the contractor before the start of a project, is a critical activity for the contractor in accepting profitable EPC projects in competitive bidding situations. Thus, the contractor should devote significant time and resources to the accurate cost estimation of project orders from clients. However, it is impossible for any contractor to devote enough time...
A graphical user interface software called GURU suitable to fit rheometer curves in Natural Rubber (NR) sulphur vulcanization is proposed. Experimental data are loaded using Excel (experimental output comes from a moving die rheometer registration), normalized and fitted with a numerical model that follows the general scheme proposed by Han. Han's chemical model translates into mathematics by means...
Heterogeneity and convergence are two distinctive features for new generation networks like the Long Term Evolution-Advanced (LTE-A) system. LTE-A is now being deployed and is the way forward for high speed cellular services. LTE-A enhancements the four areas of capacity, coverage, inter-cells coordination, and cost. Improvements in these areas are based on using several technologies. Multiple-Input...
We present a generic approach for the simulation of transport networks, where the steps of physical modeling and numerical simulation are effectively separated. The model is described by a list of physical equations and inequalities as problem constraints for non-linear programming (NLP). This list is translated to the language of expression trees and is made accessible for the numerical solution...
The two phase flow parametric study on the air induction nozzle is presented with water and air as working fluid where liquid was supplied at the pre-orifice with various inlet pressures ranged from 3 to 6 bar. The interaction between air and water at molecular level at the orifice exit leads to forming a strong shear layer intensified with increase in inlet pressure. Mean diameter and void fraction...
We aim towards the implementation of a set of fuzzy controllers capable to perform automated estimation of the period of time necessary to recover a resilience level through the non-linear influence of a set of interrelated climate change resilience indicators constrained by social-based variables. This fuzzy controller set, working together with a fuzzy inference system type Mamdani, will be capable...
This work presents a new approach for assessing the climate system and for stabilizing the temperature and other climate parameters. FACTS, as we call it, is a fuzzy inference system that overview certain climate state, and is able to generate the CO2 emissions reduction needed to implement in order to stabilize the temperature. FACTS was constructed using a neural network optimization process along...
This work presents an alternative assessment of climate projections using FACTS (Bastien and Gay, 2016), based on possible future emissions pathways related to the Intended National Determined Contributions presented in 2015 as part of the Paris Agreement on climate change. Moreover it proposes emission reductions in order to stabilize the climate to the desired levels proposed by the international...
Since 2010, Canadian Blood Services has been modernizing its facility infrastructure. Current plans call for the amalgamation of production sites in the Prairie region by 2019. Under this plan existing production centres in Alberta and Saskatchewan will be consolidated into a single site in Calgary. Because of the potential impact to the distribution network, a simulation model of the logistics network...
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