Iranian Journal of Science and Technology Transactions of Mechanical Engineering
مرور بر اساس
مجموعههای این پایگاه
ارسال های اخیر
-
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 ...
-
An investigation of the effect of heat treatment on surface roughness in machining by using statistical analysis
(Shiraz University, 2010-01-01)In the present paper, the effect of heat treatment on the surface roughness of AISI 4140 steel has been investigated by use of paired t-test and one way analysis of variance (ANOVA). The paired t-test was performed to ...
-
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 ...
-
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 ...
-
Effect of hall’s current for stokes’ problem for a third grade fluid in the case of suction
(Shiraz University, 2005-02-01)Unsteady incompressible unidirectional third-grade fluid past an infinite porous wall is considered in the presence of Hall current. The plate at the lower boundary y=0 is executing sinusoidal oscillations in its own plane ...
-
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 ...
-
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 ...
-
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 ...
-
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 ...
-
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 ...
-
D depth and susceptibility estimation of magnetic anomalies using local wavenumber (lw) method
(Shiraz University, 2010-01-01)Phase variation of potential field data can be used as an interpretation method. This idea appears in edge detection with tilt angle or phase angle. The advantages of this quantity are its independency to body magnetization ...
-
Management of resources in small and medium-sized production enterprises
(Shiraz University, 2010-01-01)Enormous loss of production time in machining, handling and assembly operations is caused mainly by resources' unavailability. For this reason companies, both large and small, should optimize the production processes with ...
-
Forecasting lead times of production orders in SME’s
(Shiraz University, 2010-01-01)The paper presents a procedure for forecasting the lead times of production orders on the basis of past actual lead time data. A customer for a particular production order will select the best bidder. It is rather risky ...
-
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 ...
-
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 ...
-
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 ...
-
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. ...
-
Longitudinal temprature changes in plate heat exchangers: analytical-numerical approach
(Shiraz University, 2003-02-01)The purpose of this paper is to develop analytical-numerical solutions to work out the longitudinal temperature changes of flow in the passages of a plate heat exchanger. The solution for a general variation in U, except ...
-
Effects of air reservoir volume and connecting pipes' length and diameter on the air spring behavior inrail–vehicles
(Shiraz University, 2010-01-01)The secondary suspension of most new EMU and DMU rail vehicles is equipped with air springs, to offer a good ride comfort to passengers. Air springs are a very important isolating component, which guarantees good ride ...
-
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 ...
