Browsing by Author "Badawy, Ahmed"

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Design of Spray Dryer Machine
(October university for modern sciences and Arts MSA, 2023) Sameh, Vera; Samir, Hana; Badawy, Ahmed
Spray drying is one of the key methods that dry liquid into powder. It is used in different fields such as the food, pharmaceutical, chemicals, and cosmetics industries. Spray drying is a method used to produce dry powder from liquids with different viscosities, by using hot gas for rapid drying. The core of this machine is the atomizer. Originally, drying techniques were based on rotary discs and single fluid high pressure vortex nozzles. Spray dryer dries the product more rapidly. The spray dryer process starts with atomization of a liquid to separate it into spray with controlled droplet size. These droplets are then exposed to a hot gas in the drying chamber passing through pipes to the powder collecting tank. Furthermore, spray drying offers multiple possibilities that no other drying technology can claim. It is characterized by the speed of the process and updated technologies such as PLC screens. In addition, spray drying offers unique opportunities in particle size engineering. Therefore, this paper focuses on the spray drying method using the spray dryer machine. The paper presents a mathematical model for the spray dryer using MATLAB, along with computational fluid dynamics simulation using ANSYS.
Industrial Upper Limb Exoskeleton
(MILITARY TECHNICAL COLLEGE, 2019-08) Badawy, Ahmed; Hamdy, Ahmed; Zakaria, Yehia Mohamed
The aim of this paper is to develop an arm exoskeleton for workers at factories to help manipulate objects easily from one place to another. The arm is controlled by the worker using a joystick, as he moves the stick the internal resistance in the stick for up and down directions is connected to the arm exoskeleton, whereas the resistance directions for left and right is connected to the shoulder exoskeleton. The microcontroller receives any change in this resistance, and then translates it to the motor via the motor driver. It activates the motors to move the arm to the required position. The motor is attached to a power screw which transmits the torque of the motor to the elbow or shoulder joint. The function of the power screw is to decrease the rotational speed transmitted to the joint allowing the user to control the angle of the joint. The power screw also adds the privilege of locking the angle while holding heavy items. Limit switches have been added to prevent the worker from moving the exoskeleton out of bounds and to prevent the workers from injuring themselves.
Motion Cueing Algorithm for Flight Simulator: Interfacing and Pilot Controls Implementation
(October university for modern sciences and Arts MSA, 2023) Essameldin Ahmad, Ahmad; Ashraf Abuzied, Omar; M. Bayoumy Aly, Amgad; Badawy, Ahmed
Flight simulation nowadays is essential to the training of pilots in both civil and military fields. Generally, the use of parallel motion mechanisms has become the standard for human-in-the-loop simulation. However, the realization of a flight simulator with reasonable fidelity is only achievable using a well-tuned motion cueing algorithm that conveys accurate, real-time cues to the user while maintaining safe use of the available platform workspace. In this paper, the necessary setup and interfacing is done with the X-Plane simulation environment for the purposes of testing and tuning the parameters of a developed motion cueing algorithm. In addition, the design and implementation of prototype pilot controls, namely the yoke and rudder pedals are also undertaken to fulfill interfacing objectives and are integrated into a fixed-seat simulator platform to conduct a full pilot-in-the-loop simulation. MATLAB/Simulink is then used for interfacing hardware pilot controls and the simulation environment as well as the real-time tuning of motion cueing parameters
Multi‑objective optimization of vertical‑axis wind turbine’s blade structure using genetic algorithm
(Medwell Journals, 2022-10) Geneid, Ahmed Ali; Atia, Mostafa R. A; Badawy, Ahmed
Through the feld of renewable energy, the vertical-axis wind turbine is preferable, especially when the wind speed is low to medium. The optimization of blade structure design is essential to enhance the usability of the vertical-axis wind turbine. This paper introduces an optimization approach for the uniform blade structure design used in the vertical-axis wind turbine. The blade cost represents 20% of the turbine overall cost, and inertia load is the dominating design load. This approach aims to optimize the weight and the cost while maintaining structural integrity. Designs of blade structure are based on a multi-objective model, including the composite material and geomet- ric parameters, where multiple design parameters are included. The model enhances the requirement of computation time and resources by approximation cross-sectional properties and loading calculations. The cost index concept is investigated to introduce an efcient method for approximation, normalizing the cost from currency exchange and price changes. The formulated model is then validated using a fnite element analysis package, where the model is the integration between the numerical geomet- ric model and the classical laminate theory. Optimization models are then formulated based on genetic algorithm and Pareto frontier analysis. Blade design parameters are included in the optimization to cover a wide range of parameters. The geometric cross- sectional properties are estimated using empirical formulas to reduce computation time and resources. The presented approach augmented the blade design parameters and genetic algorithm optimization. Optimum results for NACA 0021 shows the blade mass range between 2.5 and 3 kg and the cost index from 40 to 90.