Browsing IEM Journal by Title
Now showing items 185-204 of 310
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Modeling of viscous flows in two-dimensional turbomachinery cascade via viscous-inviscid interaction method
(The Institution of Engineers, Malaysia, 2005-09)A two-dimensional time-accurate time-marching viscous flow solver employing the viscous-inviscid interaction method suitable for turbomachinery applications is described. The inviscid main flow solver uses the second-order ... -
Modeling water balance components in rice field irrigation
(The Institution of Engineers, Malaysia, 2006-12)In this study, a water balance equation approach was applied to the irrigation practiced at the Besut Rice Irrigation Scheme. Each component of the equilibrium equation, where not measured, was modeled using equations ... -
Modelling and control of airship for low altitude surveillances application
(The Institution of Engineers, Malaysia (IEM), 2012-06)Aerial perspective provide great viewing window especially for surveillance and exploration activities. In responding to the need of green technology, airship is the best alternative for environmental friendly technology. ... -
Modelling of bread dough aeration during mixing: Experimental investigations using scale-up mixers
(The Institution of Engineers, Malaysia, 2006-12)Aeration of bread dough during mixing in three scales of Tweedy-type mixers was studied using a model, which defines the entrainment and disentrainment coefficients. The model describes dough aeration as a dynamic balance ... -
Modelling the rheological properties of bituminous binder using a mechanical model
(The Institution of Engineers, Malaysia (IEM), 2012-06)Modelling is a very useful way to fit or describe the linear viscoelastic (LVE) properties of bituminous binders, which cannot be done via laboratory work. This study investigates the applicability of LVE rheological ... -
Monitoring of pH and temperature effects in fermentation process of itaconic acid
(The Institution of Engineers, Malaysia, 2005-12)The environmental conditions such as temperature and pH have great impact on microbial growth kinetics and product formation during fermentation process. Temperature can be related to activation energy that affects the ... -
A multilevel multiplexing technique for high speed fiber optic communication systems
(Institution of Engineers, Malaysia (IEM), 2011-12)In order to explore the potential of optical multilevel signaling for high speed optical fiber networks, a novel multilevel multiplexing technique is demonstrated. Three users, each with data rates of 10 Gb/s were ... -
Muskingum and lag method river routing parameters for Klang river at Kuala Lumpur city centre derived using recorded hydrographs
(The Institution of Engineers, Malaysia (IEM), 2018-12)In this Study, the Muskingum and Lag river routing models were used to estimate the routing coefficients of Klang river using flood records of gauging stations at Leboh Pasar and Sulaiman Bridge, for a river reach of 900m ... -
My industry to academia research journey and energizing innovations among Malaysian engineers
(The Institution of Engineers, Malaysia (IEM), 2021)In this talk, the author would like to share her research journey from industry to academia, first in Malaysia and then in United States. She was fortunate to receive a strong science & mathematical education in Malaysia, ... -
Nano-sized Mn2O3 prepared by a novel solvolysis route as an electrochemical capacitor electrode material
(The Institution of Engineers, Malaysia, 2008-09)Nano-sized manganese oxide (Mn2O3) was synthesized using a solvothermal route with the presence of citric acid as the chelating agent and acetone as the handle. The sample obtained was heated at 400˚C, 600˚C and 800˚C ... -
Nitrate-nitrogen concentration variationin groundwater flow in a paddy field
(The Institution of Engineers, Malaysia, 2010-12)This study was carried out to evaluate the influence of groundwater on nitrate-nitrogen concentration in a paddy field. Fertiliser if applied excessively can cause leaching into the soil and will penetrate deep into the ... -
Noise pollution near to the construction site in an urban area (a case study in Shah Alam)
(The Institution of Engineers, Malaysia (IEM), 2022)In the contemporary era of Malaysia's rapid modernisation, a multitude of construction and urbanisation projects are underway, particularly in urban areas. As Malaysia strives to achieve its modernisation goals and join ... -
Novel bimetallic tin-manganese oxides-carbon nanotube nanocomposite and their charge storage properties
(The Institution of Engineers, Malaysia (IEM), 2014-06)The synthesis of CNTs/(Sn+Mn)Ox nanocomposites were first attempted through combining the hydro-oxidation of SnCl2 to SnO2 and the reduction of KMnO4 to MnO2 onto CNTs in this work. The reducing presence of SnCl2 accelerated ... -
A novel coaxial fed patch antennas at TVWS band channels 24 and 28 for rural wireless communication
(The Institution of Engineers, Malaysia (IEM), 2020)Microstrip patch antennas are useful for wireless communication as the technology is continuously evolving. Contacting types of microstrip patch antennas, coaxial-probe feeding, will be discussed and designed for the ... -
Numerical and experimental study of shock/turbulent flow interaction – A code validation test
(The Institution of Engineers, Malaysia (IEM), 2011-12)A numerical code has been developed to solve the shock/turbulence interaction using grid adaptation technique. For the code validation test, shock wave propagations through nozzle are studied experimentally and numerically ... -
Numerical and experimental study on wave propagation in the open atmosphere
(The Institution of Engineers, Malaysia (IEM), 2012-09)In the present research works, wave propagation in the open atmosphere has been investigated both numerically and experimentally. Two-dimensional (2D) numerical code has been developed to solve the Euler equations for the ... -
Numerical modelling of reverse pulse cleaning on rigid ceramic filters
(The Institution of Engineers, Malaysia, 2005-03)Many industrial processes involve the generation of waste gases and particulates. Environmental legislation enacted as a result of government policy has compelled industry to pay a serious attention to the air pollution ... -
Numerical simulation of dust cake build-up and detachment on rigid ceramic filters for high temperature gas cleaning
(The Institution of Engineers, Malaysia, 2004-03)Rigid ceramic filters have proved themselves as highly efficient gas filtration devices. However, the filter cleaning mechanisms by which deposited cake is removed from the filter surface are still not fully understood. ... -
Numerical simulation of the decay of grid-generated turbulence in a shock tube
(The Institution of Engineers, Malaysia (IEM), 2014-06)The decay of the grid-generated turbulence has been investigated numerically by solving the time-dependent threedimensional Navier-Stokes equations with k-e turbulence model for a compressible fluid. Turbulence grids are ... -
Numerical study of an anisotropically supported rotor with parametric excitation
(The Institution of Engineers, Malaysia, 2009-09)Anisotropic structures, e.g. oil journal bearings are often employed as supporting structure for rotating machineries. Moreover, cross-section of rotating element is often non-symmetrical due to various practical reasons. ...