10th Edition of the International IMACS/ISGG Workshop MASCOT Series, cosponsored by IAC-CNR and SIMAI, October 20-22, 2010, ULPGC - Edificio de Humanidades, Las Palmas de Gran Canaria, Spain

Minisimposio MSP 39 organizzato nell'ambito del Congresso SIMAI2010 (Cagliari, Giugno 21-25, 2010), Book of Abstracts, SIMAI, Cagliari, 2010, pp 315-322

Preface - MASCOT series of International Workshops has been organized every year, since 2001, under the auspices of the International Association for Mathematics and Computers in Simulation (IMACS) and the International Society of Grid Generation (ISGG). The Istituto per le Applicazioni del Calcolo} (IAC) of the CNR (Consiglio Nazionale delle Ricerche) has been, from the beginning, co-sponsor and main organizer of these events. MASCOT09, the 9th Meeting on Applied Scientific Computing and Tools: Grid Generation, Approximation and Visualization, was held in Rome, Italy, October 28-30, 2009, and hosted its animated group of young and senior participants at the CNR Head Office, in Piazzale A. Moro 7. Included as MASCOT09 co-sponsors were SIMAI- Societa' Italiana per la Matematica Applicata e Industriale and the Italian GNCS- Gruppo Nazionale per il Calcolo Scientifico. IAC, within the CNR RSTL (Ricerca Spontanea a Tema Libero) research project Numerical Grid Generation for Applied Scientific Computing, and MASCOT09 promoted the organization of the Guest Special Session " Together for Research: from the University of L'Aquila Onwards" by opening five positions for supported participation of young lecturers. This Special Session was designed to stress the disaster caused on the area of L'Aquila by the earthquake on April 6, 2009, at 3:32 am. In particular to pay attention to its effects on research surviving at the University of L'Aquila, and highlight the difficulties of the student community. As session focus Prof. Elisabetta Santi, from that University, gave a touching talk documenting the historical importance and the present large ruins of her town. Then five young fellows, from international submission, illustrated their scientific results. Even this workshop edition included a large spectrum of topics of the applied scientific computing, dealing with numerical methods and tools for a variety of aspects of modeling, approximation and simulation of crucially important application fields. Workshop presentations showed advanced studies in approximation and in numerical grid generation, developments of efficient solvers for partial differential equations and effective software tools, even for scientific visualization. This Book of Proceedings collects papers illustrating scientific backgrounds, research approaches and results presented at the Workshop, along with a few from the Special Session. Senior and junior expertise matured in several countries, both in west and east Europe, and overseas appears, coming from high qualified universities and research centers, in particular Italian ones, even from the University of L'Aquila. We would like to thank all who gave scientific, technical and organizational support to ensure the success of this edition, MASCOT09. We thank all the participants, senior and young colleagues, who were interested and planned to participate and all actively and warmly made the meeting successful Francesca Pistella Rosa Maria Spitaleri MASCOT09 Chairs- Scientific and Organizing Committees

9th Edition of the International IMACS/ISGG Workshop cosponsored by IAC-CNR and SIMAI, October 28-30, 2009, CNR-Aula Bisogno, Roma

In this paper we present the advanced version of the Numerical Grid Generation Wiktionary (NGGW), the online dictionary on the MediaWiki collaborative platform. NGGW is an open access free tool for research and education in numerical grid generation. We illustrate and discuss the basic criteria to design this encyclopedic dictionary, we describe its scientific contents and we show a few representative pages. We present the sets of categories used to structure the grid generation knowledge.

In this paper we propose a numerical method for the simulation of acousticfields, in presence of an obstacle in the physical domain, by finite difference solution of a two-dimensional differential model on boundary-fittedgrids. The computational process gathers the elliptic grid generation, the linear Euler equations in curvilinear coordinates, the associated bicharacteristic equation and a fully explicit finite difference approximation. We detail the models, the algorithms and a series of both literature and new test problems. We present computed velocity and pressure fields by the help of figures. The method results to be able to reconstruct field evolutions and near obstacle perturbations caused by one or more, fixed or moving, pressure sources.