تصفح Engineering Journal of Qatar University - [From 1988 TO 2005] حسب العنوان
السجلات المعروضة 102 -- 121 من 221
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Humidification - Dehumidification Desalination Process Using Waste Heat from A Gas Turbine By
( Qatar University , 1989 , Article)This paper presents a hutnidification-dehumidification desalination process using waste heat from a gas turbine power plant. In this process, the air is used as the operating fluid instead of water. The process has many ... -
Hydrate Technology For Transporting Natural Gas
( Qatar University , 2003 , Article)Natural gas hydrate (NGH) is a viable alternative to LNG (Liquefied Natural Gas) or pipelines for the transportation of natural gas from source to demand. It involves three stages: production, transportation and re-gasification. ... -
Improved 3d-Fe Computational Method For Magnetostatic Field Problems Using Unconstrained Vector Potential
( Qatar University , 1996 , Article)This paper introduces an improved three dimensional finite-element (3D-FE) computational approach for magnetostatic field problems using unconstrained magnetic vector potential (MVP) formulation in conjunction with hexahedral ... -
An Improved Model Describing Mass Transfer In Three-Phase Fluidized Beds
( Qatar University , 1990 , Article)A model for describing mass transfer in three-phase fluidized beds has been developed and tested using experimental data. The presence of two distinguishable mass transfer zones in three-phase fluidized beds led to the ... -
Industry Input Into Professional Post-Graduate Studies For The Needs Of Qatar
( Qatar University , 1999 , Article)Qatar's Industry is needing Qatari graduate professionals to lead it Support by industry for higher education for the next generation of professionals should be regarded as an investment in human resources. The College of ... -
Influence Of Reservoir Parameters On Bacterial Enhanced Oil Recovery
( Qatar University , 2002 , Article)The aim of this paper is to show the scope of the applicability of bacteria for enhanced oil recovery (EOR) in the oil reservoirs. The Application of conventional EOR-techniques is economically problematic because of ... -
Influence of Surface Finish on Fatigue Life of Steel Specimens Subjected to Pure Bending
( Qatar University , 1990 , Article)It has long been appreciated that surface conditions exert significant influence on fatigue behavior. The new capabilities of identifying and measuring surface parameters together with the significant development in data ... -
Investigation of In-Service Parameters Influencing the Wear and Wear Rate for Two Rubbing Surfaces
( Qatar University , 1989 , Article)A study has been conducted on the volumetric wear and wear rate as well as the quality of the surfaces produced by rubbing brass and steel specimens. Effect of end pressure and total sliding distance between the two rubbed ... -
Investigation of the Fouling Mechanisms in the Heat Exchangers of a Hydrotreater
( Qatar University , 2005 , Article)The problem of fouling on heat exchanger surfaces has been one of the major unresolved problems of the hydrotreatment unit at the Homs oil refinery in Syria. In this unit, a feed stream of straight-run naphtha is preheated ... -
Laboratory-Scale Tests on Gas-Solid Fluidized Bed Behaviour And Its Influence on Bed Thermal Properties
( Qatar University , 1988 , Article)The success of many industrial processes depends upon good contact between a fluid and particulate solid. A fluidized bed fulfils the requirements for this good contact. This paper presents the results of an experimental ... -
Liquid Density Of Pure And Multicomponent Fluids By Scaled-Variable-Reduced-Coordinate (Svrc) Method
( Qatar University , 1995 , Article)The Scaled-Variable-Rcduced-Coordinatc (SVRC) method with a proposed set of mixing rules are applied to calculate the liquid density of several system of liquid mixture and satisfactory results are obtained. The ability ... -
Long – Term Soaking Effect On Strength And Deformation Characteristics Of A Gypsiferous Subgrade Soil
( Qatar University , 2003 , Article)The behaviour during long-term soaking of the California Bearing Ratio (CBR), the resilient modulus and the deformation of compacted Iraqi gypsiferous soil containing about 34% gypsum was studied. Sixteen (CBR) samples ... -
LQRr Real-Time Control For Plants With Variable Parameters
( Qatar University , 2002 , Article)This paper deals with real-time optimal LQR control of plants that experience sudden changes in their parameters and states. The technique is based on real-time LQR control problem. Riccati equation is solved recursively ... -
Material Behaviour Under Corrosive Environment — Guide For Material Selection
( Qatar University , 1988 , Article)In this paper, the behaviour of engineering materials as influenced by fluid velocity, operating temperature, humidity and duration of exposure to chemical and/or electro-chemical action is carefully studied, corrosive ... -
Mathematical Model To Simulate The Surface Runoff For Ubaiyidh Valley In The Western Desert
( Qatar University , 1998 , Article)Water plays an important role in human life and development. The evaluation, planning and management of water resources become important in sustaining human life, specially in arid and semi arid regions. This paper aims ... -
Measurement Of Thermal Conductivity Of Thermally Low-Conducting Materials
( Qatar University , 1995 , Article)The thermal conductivity of a building material is a necessary parameter in estimating the cooling load of a building. Cooling load estimates are quite important in selecting building materials especially in hot-climate ... -
Microcomputer Aided Selection Of Robot Manipulators
( Qatar University , 1991 , Article)This paper presents two programs for microcomputer aided assessment of the performance of robot manipulators. The first program automatically generates robot models based on user-supplied kinematic parameters. The program ... -
A Model For A Narrow-Cut Fractionating Column
( Qatar University , 1997 , Article)A mathematical model was developed to simulate the operation of a narrow-cut fractionating column. The model can calculate boiling point and dew point on the feed plate, the number of liquid and vapour moles, the enthalpy ... -
A Model Reference Adaptive Control Scheme with External Controllers
( Qatar University , 1989 , Article)A new model reference adaptive control scheme, suitable for linear multivariable discrete time systems, is proposed. A set of parameter adaptation algorithms are developed based on the validity of perfect matching between ... -
Multicriterion Optimization Approach For The Design Of Induction Motors
( Qatar University , 1999 , Article)In most engineering design problems, trade offs are to be made among competing factors. This is obvious in the design of electric motors, when more than viewpoint is to be considered. In this paper the problem of induction ...