Iranian Journal of Science and Technology Transactions of Mechanical Engineering
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Developing an experimental model to estimate the dispersion number for a pilot flotation column in sarcheshmeh copper complex
(Shiraz University, 2005-02-01)Two empirical models are presented in order to determine the dispersion number and mean residence time for the pilot scale column cell in the Sarcheshmeh copper complex. To check the accuracy of these models a series of ...
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Finite element model updating of rotating structures using different optimisation techniques
(Shiraz University, 2005-02-01)This paper is concerned with finite element model updating of rotating structures using measured vibration test data. The use of both deterministic and stochastic optimisation techniques was investigated in order to minimise ...
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Characterizing gravity recoverable pgms and gold in grinding circuit
(Shiraz University, 2005-02-01)At McGill University, Canada, a successful Knelson technology for gravity recoverable gold (GRG) has been used to process more than 200 representative gold ore samples all over the world since the early 1990s. In recent ...
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Comparison of interface capturing methods in two phase flow
(Shiraz University, 2005-02-01)In two phase flow investigation, there is a need for robust methods capable of predicting interfaces, in addition to treating the traditional governing equations of fluid mechanics (Navier-Stokes Eqs.). Such methods in a ...
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The use of fuzzy logic theory for selecting appropriate tool steels with price analysis
(Shiraz University, 2005-02-01)Selection of tool steels is not limited to one type of steel for satisfying customer needs. On the other hand, technical specifications of tool steels are not absolute and it consistently deviates from the mean. Thus in ...
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A fuzzy logic control system for the Rotary dental instruments
(Shiraz University, 2010-01-01)Nickel-titanium alloy (Ni-Ti) rotary dental instrument files are devices which are commonly used in the field of endodontics for root canal preparation. However, Ni-Ti file breakage is common and is often caused by excessive ...
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The Arghash gold ore sample treatment
(Shiraz University, 2010-01-01)The Arghash gold deposit includes two oxidized and sulfide zones. In this work, separate samples from mineralogical zones and drilling cores of both oxidized and sulfide zones were taken, in which the gold head grades were ...
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Calculation and experimentation of the compound layer thickness in gas and plasma nitriding of iron
(Shiraz University, 2010-01-01)Thickness of compound layers formed on the surface of pure iron during the nitriding process was analytically calculated and compared with experimental data in the gaseous and plasma nitriding. Plasma nitriding was carried ...
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An improvement to the streamline curvature method in analysing the performance of a turbomachine
(Shiraz University, 2003-02-01)Streamline curvature is still a powerful method in predicting the performance of turbomachines whose results will be more realistic if a good estimation of losses and deviation is incorporated in the calculations. The ...
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Heat transfer and fluid flow through a ribbed passage in staggered arrangement
(Shiraz University, 2010-01-01)Fluid flow and heat transfer are computed through a rib-roughened duct of square cross-section. The staggered ribs are attached along the two opposite walls of the channel to augment heat transfer. Simulations are performed ...
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Energy, economy, exergy, thermoeconomy and environmental methods–an overview of the field of application within power plant design
(Shiraz University, 2003-02-01)High efficiency, environmental friendliness, low operation and maintenance costs, and the lowest possible impact on the environment are some of the requirements of sustainable energy production. In the selection of new ...
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Study of instantaneous unsteady heat transfer in a rapid compression-expansion machine using zero- dimensional k-e turbulence model
(Shiraz University, 2003-02-01)In this investigation, the instantaneous unsteady heat transfer within a pneumatically driven rapid compression-expansion machine that offers simple, well-controlled and known boundary conditions was studied. Values of the ...
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Analysis of bree’s cylinder with nonlinear kinematic hardening behavior
(Shiraz University, 2010-01-01)Bree's cylinder was used to show different material behaviors under constant mechanical and cyclic thermal gradient loadings. Bree showed different behaviors with the help of a diagram known by his name as Bree's diagram. ...
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A new design method of rolls for reshaping process of non-circular pipes
(Shiraz University, 2003-02-01)Pipes with non-circular cross sections made by reshaping processes are widely used as structural elements in almost all industries. Despite a long history of the process, because of the complicated deformation behavior ...
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Buckling of fibrous composite cylindrical shells with non-condtant radius subjected to different types of loading
(Shiraz University, 2003-02-01)An analytical investigation of the buckling problem of composite shells with radius variation is presented. Different types of loading such as compressive and external can be applied. Flügge's shell equations, modified for ...
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Modelling and prediction of process parameters in explosive welding of plates using GMDH-type neural network and singular value decomposition
(Shiraz University, 2003-02-01)GMDH-type neural networks are used for the modelling of explosive welding process of plates. The aim of such modelling is to show how the geometric characteristics of the bonding interface such as amplitude and wave length ...
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On the optimal design of rib-stiffened columns using neural networks package (NETS)
(Shiraz University, 2003-02-01)An analysis of rib-stiffened columns is made in the present study, employing the energy method with three sinusoidal terms in the assumed deflection function. A total of 325 design curves are determined and plotted showing ...
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Modeling of muscle activity of the shoulder mechanism
(Shiraz University, 2003-02-01)In this paper we present our modeling approach for studying the role of the shoulder muscles in the bowling (swinging) of a ten pin bowling ball and the moments, stresses and forces that are induced on the shoulder. Three ...
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The improvement of combustion process and reduction of unburned hydrocarbon emission in a two-stroke motorcycle
(Shiraz University, 2004-02-01)In desert areas in which there are few asphalt roads, heavy vehicles can not commute easily. Two-stroke motorcycles are lighter and have higher output power in comparison with similar four-stroke ones. In the present ...
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Generalized line-of-sight guidance with lead angle
(Shiraz University, 2004-02-01)A generalized three-dimensional line-of-sight guidance with a lead angle (GLOS) is presented for maneuvering targets. In the proposed guidance law, we define a desired line-of-sight (LOS) from the tracker by taking the ...
