This work studies mathematical issues associated with steady-state modelling of diffusion-reaction-conduction processes in an electrolyte wedge (meniscus corner) of a current-producing porous electrode. The discussion is applicable to various electrodes where the rate-determining reaction occurs at the electrolyte-solid interface; molten carbonate fuel cell cathodes are used as a specific examp...

Herb Voelcker and his research team laid the foundations of Solid Modelling, on which Computer-Aided Design is based. He founded ambitious Production Automation Project, that included Constructive Geometry (CSG) as basic 3D geometric representation. CSG trees were compact robust, saving a memory space was scarce in those times. But main computational problem Boundary Evaluation: process convert...

Recent research has focused towards determining the efficacy of using UML as an ontology modelling language [6, 7, 8, 12]. In this paper we compare the use of UML with the Web Ontology Language – OWL for modelling the travel domain. One conclusion resulting from this study is that OWL and UML were devised with different motivations, and for supporting different types of application domains. Owl...

We present a simple, linear 3D cellular automata approach for animating the melting process of solid volumetric models. Accurate modelling of object melting usually requires complicated physical simulations of heat transfer and phase transition from solid to liquid. Instead, we propose a simplified model to describe the melting behaviors of highly viscous objects, such as wax, lava, plastic, me...

The paper presents a novel method for numerically modelling fluid-structure interactions. The method consists of solving the fluid-dynamics equations on an extended domain, where the computational mesh covers both fluid and solid structures. The fluid and solid velocities are relaxed to one another through a penalty force. The latter acts on a thin shell surrounding the solid structures. Additi...

Data assimilation for the Martian atmosphere using MGS Thermal Emission Spectrometer observations Conference Item How to cite: Lewis, Stephen R.; Read, Peter L.; Montabone, Luca; Conrath, Barney J.; Pearl, John C. and Smith, Michael D. (2003). Data assimilation for the Martian atmosphere using MGS Thermal Emission Spectrometer observations. In: First International Workshop on Mars atmosphere mo...

This paper presents a solid freeform fabrication (SFF) technique based on micro-plasma powder deposition (MPPD). The relationship between the geometric features of the deposited layers and the welding parameters is investigated. The arc length is controlled through the monitoring of the arc voltage. The result of building parts with functionally graded components by the MPPD process is shown as...