Sull’importanza di essere estremi : esercizi di utopie praticabili

"Per Fare un Tavolo. Arte e territorio" è un evento ideato da Bianco-Valente e Pasquale Campanella nell'ambito del Padiglione Italia alla 17ª Mostra Internazionale di Architettura della Biennale di Venezia e parte integrante del progetto A Cielo Aperto, le cui attività sono sostenute dall'Associazione Culturale Vincenzo De Luca, nel Comune di Latronico. I contributi presenti nella pubblicazione provengono da personalità afferenti a diversi ambiti disciplinari, sono un approfondimento sulle tematiche delle aree interne e degli sviluppi delle pratiche artistiche legate al territorio, per definire il ruolo "pubblico" dell'arte, degli artisti e delle comunità

Numerical analysis of the lubricating gap at bushes lateral sides in external spur gear

This paper focuses on the evaluation of the flow field in the lateral clearance of external gear pumps using CFD. The main aim of this work is to provide useful information about the net flow entering or exiting a tooth space volume as a function of the pressure at the boundaries (adjacent tooth space volumes and drain). Results provided in this research can be easily adopted in lumped parameter models often used for the simulation of the flow through a hydraulic pump. The paper provides many details concerning the mathematical model and the approach used to perform the simulations, considering previous works done in this field. In particular, some of the simplifying hypotheses made in these works have been further investigated, for example it is pointed out that the sliding relative velocity between the surfaces has a superimposed effect to the flow field generated by the gradient pressure. For the analysis a numerical model developed in C++ has been used that takes advantage of an open-source library (OpenFOAM®).The calculation of the flow field has been achieved solving the Laplace equation in a bi-dimensional domain, instead of the complete Reynolds equation. Details regarding the approach used for setting the boundary conditions and for the evaluation of the net flow are discussed in the paper. Furthermore, results are presented also in terms of comparison with the standard lumped parameter approach based on the Poiseuille equations

A CFD Analysis of the Flow Field in the Lateral Clearance of External Gear Pumps

This paper focuses on the evaluation of the flow field in the lateral clearance of external gear pumps using CFD. The main aim of this work is to provide useful information about the net flow entering or exiting a tooth space volume as a function of the pressure at the boundaries (adjacent tooth space volumes and drain). Results provided in this research can be easily adopted in lumped parameter models often used for the simulation of the flow through a hydraulic pump. The paper provides many details concerning the mathematical model and the approach used to perform the simulations, considering previous works done in this field. In particular, some of the simplifying hypotheses made in these works have been further investigated, for example it is pointed out that the sliding relative velocity between the surfaces has a superimposed effect to the flow field generated by the gradient pressure. For the analysis a numerical model developed in C++ has been used that takes advantage of an open-source library (OpenFOAM®).The calculation of the flow field has been achieved solving the Laplace equation in a bi-dimensional domain, instead of the complete Reynolds equation. Details regarding the approach used for setting the boundary conditions and for the evaluation of the net flow are discussed in the paper. Furthermore, results are presented also in terms of comparison with the standard lumped parameter approach based on the Poiseuille equations

Bifascicular block: Assessment of atrio ventricular conduction using his bundle recording

non disponibil

Monophasic action potential of human heart. Preliminary results with a new technique

Not availabl