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R. A. Tough^1,2, A. M. Tousi², J. Ghaffari²
The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.1, pp. 1-22, 2010, DOI:10.3970/icces.2010.014.001
Abstract In this paper, micro-turbine centrifugal impeller with three different blade angles was investigated by using Computational Fluid Dynamics (CFD) method. The other basic geometric parameters are held constant. The influence of the blade angles change on the observed values was determined from numerical solution of the flow in the impeller with help of the FLUENT software. The numerical simulation focused on the air flow from compressor impeller inlet to exit, and the performance of impeller is predicted. The numerical solution was performed for original impeller geometry and for two other cases, in which blade inlet angle and backward sweep was… More >

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594

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Dǎnuţ Receanu¹, Emil Budescu¹
The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.1, pp. 23-28, 2010, DOI:10.3970/icces.2010.014.023
Abstract The paper presents a new method for solving with precision of the differential equations of mechanical systems with two, three or more degrees of freedom. Always, the mechanical systems have coupled unknown quantities of differential equations. The method uncouples the unknown quantities using a graphic program: MATLAB- simulink. More >

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535

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Z Damian-Noriega¹, PA Lomeli-Mejia², SA Villanueva-Pruneda¹, R Pérez-Moreno¹, JPA Puerta-Huerta¹, E Montes-Estrada¹, GD Alvarez-Miranda¹
The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.1, pp. 29-36, 2010, DOI:10.3970/icces.2010.014.029
Abstract The sizing of the component parts of a mechanical assembly must first assure its assembly and functionality and then the replacement (interchangeability) of used parts with new parts. For diametral fits (gaps and interferences) the ISO system of limits and fits is used, but for axial gaps the functional dimensioning method is applied to ensure maximum and minimum functional values. For each axial gap, the axial dimensions of the involved parts must be identified. Later, a minimal chain of dimensions is established, defined as the addition and subtraction of vectors parallel to the axis of interest. The difference between the… More >

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1264

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K. Kakuda¹, Y. Maeda¹
The International Conference on Computational & Experimental Engineering and Sciences, Vol.14, No.1, pp. 37-42, 2010, DOI:10.3970/icces.2010.014.037
Abstract The applications of a finite element scheme to one-dimensional linear advection-diffusion equation, the incompressible Navier-Stokes equations, and compressible Euler system of equations are presented. The mesh-based scheme is the Petrov-Galerkin weak formulation with exponential weighting functions. Some numerical results demonstrate the workability and the validity of the present approach. More >

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