Abstract : The human middle ear is part of auditory system which its function is to transmit the acoustical energy to inner ear by means of mechanical vibrations. Numerical models of the middle ear, such as models based on the Finite Element Method, are studied since the early 90 s. However, differently from structures usually studied in engineerin...
Abstract : Emissions standards for internal combustion engines are becoming ever more stringent due to environmental concerns and the impact on health from pollutant s emissions. To meet these stringent targets, computational fluid dynamics simulation of engine in-cylinder processes has been extensively used for engine design in a faster and more c...
Abstract : Reciprocating compressor are designed and tested in calorimeters under steady-state operating conditions defined by standards. However, most household refrigerators operate under transient and periodic regimes, characterized by alternate periods in which the compressor is either operating (on) or idle (off). The result is a decoupled des...
Abstract : The optimization of the use of materials and energy, as well as the search for comfort and quality of life, are indispensable characteristics in the design of new projects. In this view, geopolymeric cements are an important alternative to high performance cement, which are produced from low cost raw materials, including agricultural and...
Abstract : Due to advantages such as good processability, low cost and density plastics are present in several productive areas of consumer goods. The main manufacturing process is injection, a cyclical process where the cooling step directly affects the process performance and product quality. There are several studies on literature about optimiza...
Abstract : In recent years, the use of renewable sources of energy has shown a remarkable growth. In this scenario, concentrating solar power (CSP) is considered a promising alternative for large-scale clean energy production in the coming decades. In Brazil, the CSP market is still incipient, although some studies indicate the feasibility of incor...
Abstract: In recent years, an increasing attention has been paid to the behaviour of thin walled tubes under many varying conditions and environments. One important topic is the vibration of the tube walls, which can be initiated in a number of ways and, if resonances are involved, can result in very significant effects. One way of reducing unwante...
Cavitation pits and erosion were obtained using the rotating disk device, where a steel disk with cavitation inducers and specimens fixed on it rotates inside a water chamber to provide the cavitating flow. These pits were observed with the aid of a scanning electronic microscopy. Micro-jets impingement resulting from bubble ( or cavity) collapse c...
Cavitation pits and erosion were obtained using the rotating disk device, where a steel disk with cavitation inducers and specimens fixed on it rotates inside a water chamber to provide the cavitating flow. These pits were observed with the aid of a scanning electronic microscopy. Micro-jets impingement resulting from bubble ( or cavity) collapse c...
Cavitation pits and erosion were obtained using the rotating disk device, where a steel disk with cavitation inducers and specimens fixed on it rotates inside a water chamber to provide the cavitating flow. These pits were observed with the aid of a scanning electronic microscopy. Micro-jets impingement resulting from bubble ( or cavity) collapse c...
