Buscar
Numerical simulation of gas-liquid flows in a centrifugal rotor
(Elsevier, 2020-08-10)
Two-phase flows generally represent an adverse condition for centrifugal pumps. Research about this topic tends to be focused on performance evaluation through experimental approaches, while numerical works are quite scarce. ...
Experimental Assessment of the Internal Heat Exchanger in Vapour Compression Systems With Low GWP Refrigerant R516A
(Elsevier, 2022)
Internal heat exchangers (IHX) are commonly used
to improve the energy performance of vapour
compression refrigeration cycles. However, the
magnitude of the improvement depends on the
refrigerant and operational ...
Influence of the vehicle model on the prediction of the maximum bending response of simply-supported bridges under high-speed railway traffic
(Elsevier, 2014-08)
This investigation intends to contribute to the problem of train-bridge interaction in high-speed railway lines. For design purposes, most often a numerical model based on constant moving loads is used to reproduce the ...
Ambient and fire behavior of eccentrically loaded elliptical slender concrete-filled tubular colums
(Elsevier, 2014-09)
This paper presents the results of an experimental program carried out on slender elliptical hollow section columns filled with concrete. Given the reduced number of experimental results found in the literature on concrete ...
An experimental investigation on the characteristics of submerged horizontal gas jets in liquid ambient
(2014)
Gas injections into liquid are prevalent in the natural environment and are essential in industrial applications,
they can lead to complex flow. The flow structure and processes are essentially unsteady and turbulent.
In ...
Energetic evaluation of a CO2 refrigeration plant working in supercritical and subcritical conditions
(Elsevier, 2014-05)
Unlike other refrigerants, R744 (or carbon dioxide) has a very low critical temperature (30.98 °C) which hampers working in subcritical conditions especially when the environment is used as a heat rejection sink. Accordingly, ...
Characterization and modeling of a scroll expander with air and ammonia as working fluid
(Elsevier, 2014-09)
This paper presents the experimental characterization and modeling of a scroll expander. The expander used here is a scroll compressor modified to work as an expander. It is characterized in two experimental setups using ...
Influence of the activator concentration and calcium hydroxide addition on the properties of alkali-activated porcelain stoneware
(Elsevier, 2014-07)
Objective
The aim of this research was to investigate the influence of the alkali activator concentration and calcium dosage on the fresh behavior, compressive strength and microstructure of the binder produced by the ...
Semi-active magnetorheological dampers for reducing response of high-speed railway bridges
(Elsevier, 2014-11)
To reduce the resonant response of high-speed railway bridges, semi-active magnetorheological dampers are proposed in this study. The elements are connected to the structure in a double beam configuration. An H∞H∞ control ...
Attitude towards the incorporation of the selective collection of biowaste in a municipal solid waste management system. A case study
(Elsevier, 2014-12)
European waste legislation has been encouraging for years the incorporation of selective collection systems for the biowaste fraction. European countries are therefore incorporating it into their current municipal solid ...