Crimson Publishers-Mechanical Engineering

Evaluation of Air Flow Characteristics of Aerostatic Thrust Porous Bearings: A Numerical Approach by Marcelo Gustavo Coelho Resende, Leandro José da Silva, Cláudio de Castro Pellegrini and Túlio Hallak Panzera* in Crimson Publishers: Structural engineering Aerostatic porous bearings have been investigated in the last decades for precision engineering designs , since these bearings offer zero-friction and high operating speeds, as well as providing a very precise positioning system without external influence. Numerical methods such as CFD (Computational Fluid Dynamics) play an important role in the design and behavior analysis of porous aerostatic bearings, being possible to adjust the geometry and characteristics of the porous restrictor even before its manufacture In the present work, the behavior of the gas at the inlet and outlet of a porous thrust bearing made of cementitious composites is analysed by numerical simulation using CFD method. The results reveal a stable b...

Acoustics between “Engineering,” “Architecture,” and “Interior Design” by Naglaa Sami Abdelaziz*  In Evolutions in Mechanical Engineering: Crimson Publishers_ Journal of applied mechanical engineering Acoustic is the science of sound communication. Dealing with it could be through the usage of the devices to enable its transmission between the source and the receiver in question. Therefore, it is an engineering field. In another hand, acoustic is the science and art of the well-selected materials to enhance its propagations within the spaces. These materiality schemes, quantities, qualities, and locations, effect on the quality of the sound behavior within any interior, and then it is interior design tool to reach a well-designed built environment. Acoustic will never occur without being in a building; we need architecture to apply the acoustic. Hence, the acoustics field varies between the engineering, architecture, and the interior design . The following discussion will ...