ABSTRACT Cavitation is the appearance of vapor cavities inside an initially homogeneous liquid medium, occurs in very different situations. According to the flow configuration and the physical properties of the liquid, cavitation is the most commonly required one in all the researches on the pumps and flow systems but they are too hard to manipulate with the primary methods. In this research was study the effects of rotational speed (rpm); flow rate (Q); fluid temperature (T) and pressure (P...
Abstract This research presents the results of numerical study of heat transfer and pressure drop behavior in a compact heat exchanger (CHE) designed with drop-shaped pin fins. The heat exchanger used for thisresearch consists of a rectangular duct fitted with different drop-shaped pin fins dimensions with the same heat transfer wetted surface area.A three dimensional finite volume based numerical model using ANSYS FLUENT 14.5 has been conducted to select the optimum pin fin dimension conside...
Abstract Abrasive Water Jet Machining – (AWJM) become one of popular and growing processes among Advanced Machining Processes. It has high material flexibility and advantages of geometric, and ability to cut materials that are hard to machine using conventional technologies, it reduces the time necessary for secondary operations like programming, tool changing, or clamping. this allows a significant optimization of the overall manufacturing process chain. All these Advantages lead to (AWJM)...
Abstract The highway system of a developed country contains thousands center line kilometers of streets. Such systems consist of asphalt, concrete or composite streets ranging in condition, in recent years, several road network monitoring and maintenance programs have been established in order to monitor the on-going performance of the road network, to predict future road conditions and assess long term needs, to support investment planning and decision making, and to identify rehabilitation...
Abstract Modern power systems networks consist of a number of utilities interconnected together. Power is exchanged between utilities over tie-lines by which they are connected. Automatic generation control (AGC) plays a very important role in power system. Its main role is to maintain the system frequency and tie-line flow at their scheduled values during normal period and also when the system is subjected to small step load perturbations. The most commonly used controller is the PID contro...
ABSTRACT The main purpose of this project is to design a motorized, voice controlled wheelchair by using speech recognition module The objective of this project is to facilitate the movement of people who are disabled or handicapped and elderly people who are not able to move well. The result of this design will allow certain people to live a life with less dependence on others. The design supports voice activation system for physically disabled persons. Arduino microcontroller and speaker d...
Abstract: Through centuries, the man try to optimize jobs, and reduce the costs. In transportations system, the compact one is more desirable. In this research the sand pneumatic conveying system, used in Garri-4 power plant CFB (Circulating Fluidized Bed) boiler, a problem of high rate erosion studied. And the research aiming to find optimum and reliable solution for it. Experimental test done by using sand-blasting machine to simulate and to test the proposed solution, which is the change ...
Abstract In this thesis a method based on Particle Swarm Optimization (PSO) algorithm, which represents one type of modern optimization techniques is presented to determine the optimal parameters of Power System Stabilizers (PSSs) found in Sudanese National Grid, instead of classical control approaches. In addition TCSC is implemented in the National grid to increases the performance of the system by decreasing reactance of the transmission lines and hence increases the power flow in the lin...
Abstract: This study was dealing with assessment of groundwater quality and its fitness for agriculturaland domestic uses for Umbada district in western Omdurman, Sudan. The objectives of the study were to determine the groundwater quality through chemical and microbiological analyses for the samples taken from the studied boreholes in the area under investigation. Water samples for five groundwaterwells were collected in poly ethylene bottles and analyzed physically, chemically and bacterio...
ABSTRACT Liver is one of the most important organ in the human body, it performs a variety of vital functions. Liver cancer is a pathological disorder of the human that affects around 50 million people worldwide. The early detection and diagnosis of liver cancer is very important to facilitate the treatment process. The objective of this study is to design and develop an automated system for liver CT images diagnosis as normal or abnormal to help physicians in their diagnosis and treatment p...
Abstract Changing down-hole conditions observed during hydrocarbon exploration can be divers. Some desired ones concern oil/gas shows while others may vary from borehole/drilling fluid association and pressure situations. Managing pressure variations and geopressure zones while drilling has been an issue of concern which has yield generic positive results over the years. However pre-pressure zones (i.e. zones above pressure zones), can display characteristics that are worthy of note in view ...
ABSTRACT In this research the equalization concepts in Long Term Evolution (LTE) has been discussed in theoretical and practical manners as an analysis and implementation study of channel equalization in LTE downlink. As channel equalization is achieved on the receiver side after the OFDM modulation , we proposed a complete scenario for generation of OFDM frame from random bits which symbolized and QPSK modulated to generate the OFDM frame which consist of 10 sub frame, then the frame is pass...
ABSTRACT This research evaluates air transportation safety in Nigeria. Records of aircraft crashes in Nigeria were extracted from different archives to create a database of air traffic incidences within the air space of Nigeria since Independence. Statistical overview of air transportation accidents in Nigeria using accident data to examine a national trend in air transportation disasters was carried out. Results of the analysis showed that air traffic accidents in Nigeria have increased per...
ABSTRACT Extending the Unmanned Air Vehicles (UAV) flight time with clean energy is a new challenge. One of the pioneering technology in this filed is piezoelectric but duo to low power that can be harvested from the piezoelectric material this technology is rare. This project proposes a computational frame work to predict the maximum power that can be harvested from a piezoelectric material implanted in a UAV wing by activating the resonance mode on the piezoelectric harvester. The suitable ...
Abstract Machines are very important in modern society. The bearing compose a supreme component in the machine parts ,hence, many problems arise that minimize bearing life like high temperature, speed and excessive vibration. In this research, electronic simulation system is developed to measure temperature, speed, and vibration in deep groove ball bearing. Hence, the system live alarms and sends signal to stop the machine when it exceeds one of three-designed value. This system was tested i...