FIC/FEM formulation with matrix stabilizing terms for incompressible flows at low and high Reynolds numbers

The final publication is available at Springer via http://dx.doi.org/10.1007/s00466-006-0060-yWe present a general formulation for incompressible fluid flow analysis using the finite element method. The necessary stabilization for dealing with convective effects and the incompressibility condition are introduced via the Finite Calculus method using a matrix form of the stabilization parameters. This allows to model a wide range of fluid flow problems for low and high Reynolds numbers flows without introducing a turbulence model. Examples of application to the analysis of incompressible flows with moderate and large Reynolds numbers are presented.Peer ReviewedPostprint (author's final draft

Development of New Lagrangian Computational Methods for Ice-Ship Interaction Problems: NICESHIP Project

This document presents the activities carried out to date (04/2019) in the project ‘Development of new Lagrangian computational methods for ice-ship interaction problems’ (NICE-SHIP). The NICE-SHIP project aims at developing a new generation of computational methods, based on the integration of innovative Lagrangian particle-based and finite element procedures for the analysis of the operation of a vessel in an iced sea, taking into account the different possible conditions of the ice. It is expected that the computational analysis techniques to be developed in NICE-SHIP will allow ice-class vessel designers to accurately evaluate the loads acting on the structure of a ship navigating in iced-seas and, in particular, to determine the ice resistance of the ship in different ice conditions

An Investigation into the Mediating Influence of Customer Expertise on the Antecedents and Consequences of Affect within Professional Service Markets

This study examines the mediating influence of consumer expertise on the antecedents and consequences of Affect within a professional services market context. Whilst there is increasing evidence to suggest an empirical link between Affect evoked and satisfaction within such contexts, previous research has largely ignored the role of consumer expertise as a mediating influence. Using a scenario based approach, the objective of the study was to test for multigroup invariance among competing structural models based on the ability of the respondents to form expectation and performance assessments about the service they are receiving. The results indicate that it is important to examine different levels of consumer expertise in detail to better understand how certain characteristics such as experience and qualifications influence the priority and functionality attached to service attributes when making satisfaction judgments within a professional service context. This may in turn have broader implications for our contextual understanding of services

NURBS distance fields for extremely curved cracks

This paper presents the first methodology that combines a meshless method and the exact representation of cracks using Non-Uniform Rational B-Splines (NURBS). The methodology consists on developing an enrichment function based on distance functions to NURBS curves.The examples show the potential of the proposed approach and demonstrate the applicability to problems involving complex cracks that appear in sol-gel films

A particle finite element method (PFEM) for coupled thermal analysis of quasi and fully incompressible flows and fluid-structure interaction problems

This book presents and discusses mathematical models, numerical methods and computational techniques used for solving coupled problems in science and engineering. It takes a step forward in the formulation and solution of real-life problems with a multidisciplinary vision, accounting for all of the complex couplings involved in the physical description. Simulation of multifaceted physics problems is a common task in applied research and industry. Often a suitable solver is built by connecting together several single-aspect solvers into a network. In this book, research in various fields was selected for consideration: adaptive methodology for multi-physics solvers, multi-physics phenomena and coupled-field solutions, leading to computationally intensive structural analysis. The strategies which are used to keep these problems computationally affordable are of special interest, and make this an essential book.Postprint (published version

A Finite Element Analysis of the Brindisi di Montagna Scalo Earthflow (Basilicata, Southern-Italy)

In this paper a general Finite Element Method (FEM) analysis is presented for the investigation of landslide mechanics behavior, including a non-linear constitutive model of soils. Landslide body is modeled using FEM with 3D volume elements, with large strains assumptions, and the soil mass properties are adopted according to the non-linear Drucker- Prager material formulation. The remaining soil region is assumed as boundary constrains. A special attention is devoted to the geometrical definition of the volume of the landslide body and of the boundary surfaces, particularly the landslide sliding surface, and to the applied loads. To this aim a specific pre-processor code is employed which is able to generate the mesh and the input file for the FEM code. The performances of the approach have been checked by using the test case of Brindisi di Montagna Scalo landslide. In this first approach the results show that the methodology is powerful and can be used efficiently for the numerical analysis of complex landslide configuration