− In this paper a cost-effective method for measuring transportation velocity and the velocity profile of a material flow of powdery solids inside a pipe is presented. For the measurement, artificial perturbations are brought into the mass flow and the effects of these perturbations are acquired and correlated at measurement sections. The velocity profile is calculated with the knowledge of the...

In the analysis of orthogonal cutting process using finite element (FE) simulations, predictions are greatly influenced by two major factors; a) flow stress characteristics of work material at cutting regimes and b) friction characteristics mainly at the tool-chip interface. The uncertainty of work material flow stress upon FE simulations may be low when there is a constitutive model for work m...

This paper reports on the design and realization of an agent-oriented control system dedicated for material flow systems. The implementation is based on DCOM (Distributed Component Object Model). Regarding the increasing availability, performance and acceptance of distributed object-oriented systems as well as the growing number of agent-oriented software it is natural to adapt and use the capa...

Networked manufacturing enterprises are now moving towards more open information exchange for integrating their activities with those of their suppliers, customers and partners within wide supply chain networks. Therefore there has been increasing need for software systems to support business networks. This paper introduces SteelNet agent architecture, which facilitates a real collaboration of ...

sediment flushing of reservoirs is an operational technique, whereby previously accumulated sediments in the reservoirs are hydraulically removed by accelerated flow when the bottom desiltingoutlets of the dam are opened. in this research, the process of sediment flushing is simulated by a three dimensional numerical model in which sediment and flow interaction are reflected in the reservoirs. ...

Advanced manufacturing control still remains an important topic in current research. Especially aspects of dynamics and of failures in the production process are insufficiently taken into account by systems in use. This paper presents a multi-agent approach to scheduling material flow that shows dynamic and adaptive behaviour. Even though machine scheduling has found a thorough treatment in AI ...

In this paper,a moving mesh BGK scheme (MMBGK) for multi-material flow computations is proposed. The basic idea of constructing the MMBGK is to couple the Lagrangian method for the material interface with the remapping-free ALE-type kinetic method within each single material region. Numerical examples in one and two dimensional space are presented to illustrate the efficiency and accuracy of th...

Manufacturing and logistics are globally facing transformational changes. The introduction of new technologies and the advances in equipment and intelligence capability are having profound effects on production and logistics in practice. New solutions for manufacturing and logistics are evolving to respond to various needs. In particular, production and services are transformed from vertically ...

Modeling of the high altitude portion of reentry vehicle trajectories with DSMC or statistical BGK solvers requires accurate evaluation of the boundary conditions at the ablating TPS surface. Presented in this article is a model which takes into account the complex ablation physics including the production of pyrolysis gases, and chemistry at the TPS surface. Since the ablation process is time ...