الاثنين، ١٤ مارس ٢٠١١

فيديوهات تعليمية لبرامج مجانية تساعد في تحليل أداء السفن و تصميمها


الحمد لله اللهم صلي و سلم و بارك على الحبيب محمد رسول الله و اﻷنبياء أجمعين

بفضل الله تعالى سجلت المجموعة البحثية لنا فيديوهات تعليمية لبرامج computational fluid mechanics
و التي هي هامة جدا لتحليل أداء السفن و تصميمها المتطور
فنرفق روابط لهذه الفيديوهات التعليمية راجين من الله عز و جل أن يكون فيها من النفع ما يفيد زملائنا و أبنائنا طلاب الهندسة البحرية
معظم البرامج التعليمية مجانية ﻷننا نشجع بقوة كما علمنا ديننا الحنيف البعد عن سرقة البرامج تماما لان الله تعالى طيب لا يقبل الا طيب :لذا فنحن نشجع أبنائنا و وملائنا على تفقد قدرات هذه البرامج المجانية

هذه هي الروابط
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الأحد، ١٣ مارس ٢٠١١

A Low Cost Reliable Educational Underwater Robot from Off-the-Shelf Components


               The 2011 World Congress on Computer Science and Information Technology, WCSIT'11, Student Session Presentation
 A Low Cost Reliable Educational Underwater Robot
Mohamed Abdelsalam
Abstract
Robotics is an excellent educational tool. Underwater robots in particular are a most promising educational tool rich with learning experiences that students can gain while constructing them. The present paper offers a simple "recipe" for building a reliable underwater robot demonstrated through a case study.  The advantage of the described recipe over existing educational robotics kits is that it combines being low-cost and reliable at the same time. We illustrate how adopting the proposed recipe can teach students that it is possible to develop successful sophisticated engineering projects from simple, cheap off-the-shelf components and using only low-resources technological tools if they carefully employ the different engineering concepts that they learnt through their different studies. In addition to that, the paper includes some important recommendations for instructors regarding how to use described recipe to teach students some important basic concepts and skills
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A Low Cost Reliable Educational Underwater Robot from Off-the-Shelf Components

 ECE-10: 1st International Conference on Electrical and Computers Engineering
 Cairo,Egypt, 2010
 A Low Cost Reliable Educational Underwater Robot from Off-the-Shelf Components
 Mohamed Abdelsalam


Abstract

Robotics is an excellent educational tool. Underwater robots in particular are a most promising
educational tool rich with learning experiences that students can gain while constructing them. The present
paper offers a simple "recipe" for building a reliable underwater robot demonstrated through a case
study 
 The advantage of the described recipe over existing educational robotics kits is that it combines being low-cost and reliable at the same time. We illustrate how adopting the proposed recipe can teach students that it is possible to develop successful sophisticated engineering projects from simple, cheap off-the-shelf components and using only low-resources technological tools if they carefully
employ the different engineering concepts that they learnt
through their different studies. In addition to that, the paper includes some important
recommendations for instructors regarding how to use described recipe to teach students some important
basic concepts and skills
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DESIGNING HIGH SPEED MONOHULL SMALL CRAFTS (HSMSC) USING NEURAL NETWORKS GUIDED CFD BASED OPTIMIZATION


              IEEE OCEANS Conference Bremen, Germany, May, 2009
Mohammad Alaa El-laffy, Mohamed Abdel-Salam, Bassam Salah, Beshoy Magdy, Mohammad Tarek, Ahmad El-bastaweesy, Islam Adel , Mohammad Mahmoud, Ihab El-deen Abdel-majeed, Ahmad El-sayed
 DESIGNING HIGH SPEED MONOHULL SMALL CRAFTS (HSMSC) USING NEURAL NETWORKS GUIDED CFD BASED OPTIMIZATION
Abstract
 A new optimal design strategy for monohull vessels is proposed. The goal of the proposed procedure is
to make monohulls competitive with their multihull counterparts. The resulting designs, thus, would
combine the advantages of high speed vessels with those of simpler monohull vessels. The proposed
strategy proposes a new re-formulation of hull optimization problem objective and uses a new class of
Artificial Neural Networks (ANNs) to achieve it. Computational Fluid Dynamics (CFD) simulation is
used to provide the necessary data for ANN training. The advantage of the used ANN over classical
ones is that it adopts a one-shot lagrangian-like training procedure. The proposed design strategy is
proven to be effective through several CFD-validated design examples
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Achieving Real-Time Intelligent Performance in Underwater Robotics Using Cheap Off-the-Shelf Components


6th International Conference on Electrical Engineering ICEENG ,Cairo, 2008
 Achieving Real-Time Intelligent Performance in Underwater Robotics Using Cheap Off-the-Shelf Components
 Ali Ibraheem, Bilal Hassanein,  Saad Sharaf, Mohi Ahmad, Mahmoud Magdy, Mohamed Abdelhady,Hamada Attia
Abstract:
      The present paper proposes a new simple strategy to build underwater robots using cheap off-the-shelf components. The proposed strategy successfully achieves real-time operation without requiring expensive special purpose hardware/software. The simple geometry of the proposed design makes it possible to derive an accurate dynamic model of the robot. The dynamic model, hardware/software preprocessing of webcam images, multi-feature Kalman based combining as well as neural networks are used to compensate for the limited sensors and computational resources

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A RECONFIGURABLE MULTI-HYDRAULIC-ACTUATORS BASED CNC MACHINE FOR AUTOMATING SHIP HULL MANUFACTURING

The 2011 World Congress on Computer Science and Information Technology, WCSIT'11
 Student Session Presentation
A RECONFIGURABLE MULTI-HYDRAULIC-ACTUATORS BASED CNC MACHINE FOR AUTOMATING SHIP HULL MANUFACTURING
Ali Ibraheem

Abstract
Numerical control (NC) refers to the automation of machine tools that are operated by abstractly programmed commands encoded on a storage medium, as opposed to manually controlled via handwheels or levers, or mechanically automated via cams alone. Modern computer numerical controlled (CNC) machine tools have revolutionized the manufacturing process. In modern CNC systems, end-to-end component design is highly automated using computer-aided design (CAD) and computer-aided manufacturing (CAM) programs. The programs produce a computer file that is interpreted to extract the commands needed to operate a particular machine via a postprocessor, and then loaded into the CNC machines for production. Despite their wide-spread in many manufacturing fields, they are still unutilized by the ship industry. With ship hulls, the sizes of the plates that are required to be shaped as well as their desired forming shapes are quite challenging to CNC machines. The aim of our presentation is to review the principles of CNC machines, the associated challenges that hinder using them in the ship industry as well as propose a new CNC machine design concept that can overcome these challenges. The proposed modified CNC machine makes use of several hydraulic actuators within a reconfigurable system framework to overcome the drawbacks of conventional machines from the point of view of ship hull forming. A simple control strategy is proposed to assure that the plates are shaped as required with high accuracy. Examples are included to illustrate how the proposed machine can greatly improve the current status of ship manufacturing by comparing it with current ship hull forming methods, which are essentially trial-and-error based and whose efficiency highly depends on the workers experience and personal skills
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السبت، ١٢ مارس ٢٠١١

COMPUTATIONAL FLUID DYNAMICS–BASED ANALYSIS AND OPTIMIZATION OF STIRLING ENGINES: AN INSIGHTFUL SURVEY


ICEST 2011 International Conference on Energy Systems and Technologies, 14-17 March 2011, Cairo, Egypt (ان شاء الرحمن الرحيم)
 COMPUTATIONAL FLUID DYNAMICS–BASED ANALYSIS AND OPTIMIZATION OF STIRLING ENGINES: AN INSIGHTFUL SURVEY
 Hossam Abdelsattar, Mahmoud Gamal, Waleed Talaat, Mahmoud Abdelnasser, Mohamed Leheta

ABSTRACT
Stirling engines have been invented since 1817. Their advantages include their near silent operation, their environmental friendly nature, as well as their high theoretical efficiency, their ability to run directly on any available heat source, as well as low explosion risk. Their applications include transportation, electricity generation and refrigeration. However, to date their disadvantages have completely precluded their widespread in these applications. Motivated by their major advantages, which we believe that should completely outweigh the disadvantages; the present survey reviews the basic principles of Stirling engine operation and discusses how the emerging computational fluid dynamics (CFD) methods can be used to optimize Stirling engines. We will show how CFD-optimized Stirling engines can overcome conventional Stirling engine challenges and promote their use on a larger scale

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PROMOTING THE WIDESPREAD OF ENVIRONMENTAL FRIENDLY ENGINES IN ARAB NATIONS AT MINIMUM COST AND REDUCED TECHNICAL COMPLEXITY

SRO5, the Conference on Energy and Renewable Energy Resources, 5th Congress on Scientific Research Outlook (SRO5), Fez, Morocco on 26-30 October, 2008
 PROMOTING THE WIDESPREAD OF ENVIRONMENTAL FRIENDLY ENGINES IN ARAB NATIONS AT MINIMUM COST AND  REDUCED TECHNICAL COMPLEXITY

Saad Sharaf**, Seif A. Salah Eldeen*, Hossam M. Abdelsattar, Mohammed F. Leheta
 ABSTRACT

Environmental welfare issues, pollution concerns, fossil fuels depletion as well as political reasons (aiming to defy the Arab world dominance of energy resources due to its leadership in the oil and gas industry) have caused interest in new energy resources and engines to increase greatly in recent years. In view of such a surge of interest in new energy resources, the Arab world must prove to the world that it is still the leader nation capable of such energy resources production at premier quality. The purpose of the present paper is to suggest research-worthy directions that if properly exploited by Arab scientist can help the Arab world to maintain its dominance of the international energy market. These are biofuels, modifications to existing engines and new alternative engines

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An Improved Fuzzy Logic Controller For Ship Steering Based on Ior Operator and Neural Rule Extraction

ICCES08, November 25-27, 2008, Faculty of Engineering - Ain Shams University, Computer Engineering & Systems Department Cairo, EGYPT
An Improved Fuzzy Logic Controller For Ship Steering Based on Ior Operator and Neural Rule Extraction
 Ibraheem Hamid, Hamada Senousy, Mahmoud Abou-Elmakarem




Abstract
 In this paper a fuzzy logic controller for ship steering is designed and simulated. The logic “ior” operator as well as wave filtering are used to obtain improved control performance as well as to get over the chattering problem associated with traditional fuzzy controllers. Moreover, an automatic neural networks-based rule generation and justification strategy is suggested to alleviate the need of manual rule extraction and pruning. This has the advantages of near-optimal easy rule generation as well as avoiding errors due to experts overlooking certain aspects of the control problem

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New Wave Energy Harvesting Mechanisms for Fixed and Moving Floating Structures

ICEST 2011 International Conference on Energy Systems and Technologies, 14-17 March 2011, Cairo, Egypt (ان شاء الرحمن الرحيم)
New Wave Energy Harvesting Mechanisms for Fixed and Moving Floating Structures
 Ibraheem Hamid, Mohamed Adel Taher, Ali Ibraheem

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A NEW INTELLIGENT RELIABLE ENVIRONMENTAL FRIENDLY POWER UNIT FOR SUPER YACHTS

ICEST 2011 International Conference on Energy Systems and Technologies, 14-17 March 2011, Cairo, Egypt (ان شاء الرحمن الرحيم)
 A NEW INTELLIGENT RELIABLE ENVIRONMENTAL FRIENDLY POWER UNIT FOR SUPER YACHTS 
Ali Ibraheem, Ibraheem Hamid, Mohamed Adel

ABSTRACT
The present paper proposes a new hybrid environmental friendly power unit that is especially suitable for multihull superyachts powering. The unit harvests solar/wind energy using a smart new scheme. The contributions of the new design that we propose may be summarized as follows. The first contribution is the special arrangement and positioning of the solar/wind harvesting systems. The second contribution is an adaptive anticipatory fuzzy logic controller which is responsible for optimal power unit parameters adjustment and power budget management. The merits of the proposed power demonstrated through a case study. We present the full details of applying the proposed power unit design principles to design the power plant for a "quadramaran" superyacht that we call Ganaremos. The analysis of this case study proves that the proposed power unit is reliable, cost-effective, acceptable in terms of size and weight as well as being environmental friendly

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A HYBRID NEURAL NETWORKS-HIDDEN MARKOV MODEL STRATEGY FOR ACTIONS SEQUENCE AUTOMATION


The 2011 World Congress on Computer Science and Information Technology, WCSIT'11
 Student Session Presentation
A HYBRID NEURAL NETWORKS-HIDDEN MARKOV MODEL STRATEGY FOR ACTIONS SEQUENCE AUTOMATION
 Mostapha Abdeljawad*, Mohammad Adel Taher
Abstract
 The present proposes a new strategy for action sequence automation based on artificial neural networks (ANNs) and hidden Markov models (HMMs). Action sequence automation is achieved through 2 consecutive modules. The first is a target generation module which uses an ANN to predict, given an image depicting the current state, the “should be” coming state images if the action sequence is proceeding in correct tracks. The second module is the Hidden Markov Model (HMM) action sequence generator, which given a sequence of states, produces the most probable related actions. To demonstrate the different aspects of the proposed strategy, we discuss its application to underwater welding automation

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New Modular Strategy For Action Sequence Automation Using Neural Networks And Hidden Markov Models

ECE-10: 1st International Conference on Electrical and Computers Engineering
 Cairo,Egypt, 2010
 New Modular Strategy For Action Sequence Automation Using Neural Networks And Hidden Markov Models
 Mohammad A. Taher, Mostapha Abdeljawad

Abstract
 The present proposes a new strategy for action sequence automation based on artificial neural networks (ANNS) and hidden Markov models (HMMS). Action sequence automation is achieved through 2 consecutive modules. The first is a target generation module which uses an ANN to predict, given a current state image, the “should be” coming state images if the action sequence is proceeding in correct tracks. The second module is the Hidden Markov Model (HMM) action sequence generator, which given a sequence of states, produces the most probable related actions. The proposed strategy is illustrated through an example
of an automated welding system


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MULTIPHYSICS SIMULATION: BASIC CONCEPTS AND APPLICATIONS IN ENGINEERING EDUCATION AND DESIGN

The 2011 World Congress on Computer Science and Information Technology, WCSIT'11
Student Session Presentation 
 MULTIPHYSICS SIMULATION: BASIC CONCEPTS AND APPLICATIONS IN ENGINEERING EDUCATION AND DESIGN
 Bassam Salem*, Omar Fathy, Ibraheem Hamid and Ahmed El-Bastawesy 


Abstract
 Most engineering systems are complex and multidisciplinary in nature. Multiphysics simulators are thus, an essential tool in both engineering education and design. Multiphysics simulators complement practical experiments and can even serve as an excellent alternative to them in many situations. In education, students can use these simulators to construct real life engineering applications in minutes and analyze their behavior. Parametric studies carried out using these simulators can help them understand basic engineering laws and physics phenomena. In design, multiphysics simulators are invaluable for a designer. It allows designers to verify their preliminary designs and modify them until satisfactory performance is achieved without resorting to expensive prototype construction and reconstruction.  The goal of our presentation is to introduce to the audience the motivation for using multiphysics simulators, the basic steps of constructing a multiphysics simulation (geometry definition, boundary conditions definition, meshing, solver configuration and postprocessing) as well as a summary of important concepts that must be clear in the mind of a multiphysics simulator user to avoid obtaining inaccurate results. Case studies from multidisciplinary engineering applications are included for illustration.

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A NEW INTELLIGENT STRATEGY FOR OPTIMAL DESIGN OF HIGH DIMENSIONAL SYSTEMS

     IEEE GCC Conference & Exhibition  2011
Dubai, United Arab Emirates 
 A NEW INTELLIGENT STRATEGY FOR OPTIMAL DESIGN OF HIGH DIMENSIONAL SYSTEMS
Ahmed El-Bastawesy, Ahmed El-sayed, Mohamed Abdel-Salam, Basam Salah, Islam Adel, Mohamed Alaa El-laffy, Mohamed Tariq, Beshoy Magdi, Omar Fathi

Abstract
The present paper proposes a new intelligent strategy that is suitable for optimal design of large scale complex systems such as ships and aircrafts. The strategy relies on three key aspects. The first is choosing a suitable compact compressed invertible representation for the high dimensional design variables vector. The second is defining a goal-focused problem-specific objective function. The third is seeking the global optimal of this objective function using a gradual non-greedy optimization procedure. The effectiveness of the proposed case study is demonstrated through a ship design case study. Starting from an initial far from optimal design, the strategy successfully converged to a greatly improved design in only three iterations
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WI-TI: AN OPTIMIZED GREEN ENERGY FARM CAPABLE OF SOLVING EGYPT ENERGY CRISIS BASED ON WIND AND MARINE CURRENT ENERGIES

ICEST 2011 International Conference on Energy Systems and Technologies, 14-17 March 2011, Cairo, Egypt(إن شاء الرحمن الرحيم),
WI-TI: AN OPTIMIZED GREEN ENERGY FARM CAPABLE OF SOLVING EGYPT ENERGY CRISIS BASED ON WIND AND MARINE CURRENT ENERGIES
 Ahmed El-bastawesy, Islam Adel, Omar Fathi, Mohamed Fouad, Bassam Salem, Ahmed El-sayed, Ehab Eldin Heeba, Mohamed Refaai


 
ABSTRACT
The present paper proposes a new design philosophy for renewable energy power plant planning. The philosophy relies on combining hybrid energy harvesting with computational fluid dynamics (CFD)-based optimization in order to produce a power plant that achieves the desired high power density harvesting at a low cost and with out resorting to complex construction technologies. The effectiveness of the proposed philosophy is demonstrated through preliminary planning calculations for a hybrid energy farm called WI-TI which we believe to be a step forward towards solving the Egyptian energy crisis.

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