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385 articles for “Velocities”
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Improved Film Cooling with Hybrid Arrangement of Cooling Holes
Abstract: In the present work, numerical study of full coverage film cooling on an adiabatic flat plate is carried out. Cylindrical holes of 30° injection angle are used to supply cold air into the hot primary flow. Adiabatic film cooling effectiveness is calculated at different velocity ratios to study the film cooling performance. A new hybrid arrangement of film cooling holes is presented by splitting the full coverage of film holes …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 2, 2017 · pp. 1–6 Read article
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Comparison Study between Pd/AC and Pd/CB for Simultaneous Production of Hydrogen and Carbon Nanotubes using Thermocatalytic Decomposition of Methane
Abstract: Hydrogen is an attractive alternative source of the future need. It could be produced from the diverse sources and is used for a transport fuel which chiefly alliance with fuel cells. The crucial challenge for hydrogen production is reducing the price of production technologies to make the ensuing hydrogen price economical with conventional fuels. Thermocatalytic decomposition (TCD) of methane is one of the most advantageous technique which will meet the …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 1, 2016 · pp. 18–26 Read article
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The Effects of TiC Reinforcement on Thermal, Electrical and Dry Sliding Wear Behaviour of Aluminium Matrix Nanocomposites
Abstract: AbstractThe present work is to investigate the thermal, electrical and dry sliding wear behaviour of a aluminium matrix composite reinforced with dissimilar particle size (≤ 200 nm and 2 μm) of titanium carbide particles. An aluminium matrix composite with 0, 5, 10 and 15 vol.% TiC reinforcement was prepared by using powder metallurgy. A pin-on-disc apparatus was broadly used to investigate the wear behaviour of the Al/TiC nano composites. Wear …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 19, Issue 2, 2017 · pp. 28–41 Read article
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Finite Element Simulation of the Cold Open-Die Forging of Sintered Aluminum Metal Powder Trapezoidal Preforms
Abstract: This paper presents finite element simulation of the forging of sintered aluminium metal powder trapezoidal preforms at cold conditions. It involves basic experimental investigations followed by the finite element simulation of the forging process under consideration by the use of DEFORM. The basic experimental work includes the fabrication of compaction die-sets, production of aluminum metal powder trapezoidal preforms and simple compression test to obtain load-deformation data. The stress-strain data was …
Published in Trends in Mechanical Engineering & Technology · Vol. 1, Issue 2-3, 2011 · pp. 18–28 Read article
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Use of Fuzzy Logic Method for the Optimisation of the Wear Parameters of Aluminum Alloy
Abstract: In this paper, use of fuzzy logic in the Taghuchi method for the optimisation of the wear parameters of aluminum alloy is explained. An experiment was conducted on three alloys viz. Al-25Zn-2.5Cu-5SiC, Al-25Zn-2.5Cu-10SiC, Al-25Zn-2.5Cu-15SiC. Experiments were carried out on standard pin-on-disc machine, at ambient temperature and under dry operating condition. The three process parameters like sliding velocity, load and sliding distance were optimized. In the Taguchi method, L27 orthogonal array …
Published in Trends in Mechanical Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 20–25 Read article
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Experimental Investigation of PTFE Composite Material with Different Filler Materials
Abstract: Experimental investigation of PTFE (Polytetrafluroethylene) composites with different filler materials such as glass fiber, molybdenum disulphide, graphite carried is out in this study. This study exhibits tribological properties such as wear and coefficient of friction of PTEF composite material. Pin on disc tribometer is used to conduct the wear on PTFF polymer composite. Test is conducted on 10 mm diameter PTFE pin against EN31 counter face. Wear and friction experiment …
Published in Trends in Mechanical Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 34–42 Read article
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Crash and Vibrational Analysis of Car Body
Abstract: This paper describes about the relevance of the crash analysis required for the safety of the automobile during the time of the crash. During the crash of an automobile, some parts in the front of an automobile body will have plastic deformation and absorb a lot of energy. Hence, it is necessary to check the car structure for its crash ability so that safety is achieved together with fuel economy. …
Published in Trends in Mechanical Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 26–35 Read article
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Interfacing Renewable Energy Sources to the Utility Power Grid Using a Motor-Generator Set
Abstract: This paper describes modeling and simulation of a utility grid-connected renewable energy based hybrid power system (HPS) in the aspect of improving power quality. In order to meet sustained load demands during varying natural conditions, different renewable energy sources and power conditioning units need to be integrated with each other. The paper focuses on the combination of photo voltaic (PV) cell, wind turbine (WT), fuel cell (FC), and battery systems …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 3, Issue 1, 2012 · pp. 31–50 Read article
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Control of Separation Induced on the Wing of Transonic Speed Aircraft by Means of Micro Vortex Generator
Abstract: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 This experimental study provides an assessment of the potential of applying a control device to mitigate undesired separation formed on the wing of an aircraft causing instability of the airliner. They are used in a wide range of aircrafts and yet needs to be improved for wider applications.The study was conducted in a transonic wind tunnel. The concept of passive control, …
Published in Journal of Aerospace Engineering & Technology · Vol. 1, Issue 2, 2011 · pp. 1–18 Read article
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GPS based Receiver Autonomous Integrity Monitoring (RAIM) for Onboard Aircrafts over the Indian Subcontinent
Abstract: Normal 0 false false false EN-US X-NONE X-NONE The introduction of Global Positioning System (GPS) has revolutionized the field of navigation particularly in the field of navigation. The GPS is a reliable, all weather satellite based radio navigation system that provides accurate three dimensional (3D) positions, velocity and timing information up to 10-6 seconds accuracy anywhere on or above the earth’s surface.However, a navigation system is required to deliver alarm …
Published in Journal of Aerospace Engineering & Technology · Vol. 1, Issue 2, 2011 · pp. 28–39 Read article
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On the Universal Equation of Elasticity and the Universal Equation of Thermo-elasticity for Next-generation Aircrafts and Spacecrafts
Abstract: In the present investigation, the theories of “Relativistic Elasticity” and “Relativistic Thermo-Elasticity” are proposed for the design of the new-generation large aircraft with turbojet engines and speeds in the range of 50,000 km/h and for the new-generation spacecraft of any speed. Such theories show that there is a considerable difference between the absolute stress tensor and the stress tensor of the moving frames even in the range of speeds of …
Published in Journal of Aerospace Engineering & Technology · Vol. 2, Issue 1, 2012 · pp. 6–23 Read article
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Numerical Investigation of Drag and Lift Forces on Turbulent Flow on an Airfoil Shaped Body at Different Angles of Attack
Abstract: Numerical analysis of drag and lift force on an airfoil shaped body at different angles is presented. Fundamentals of aircraft design are provided with detailed estimation of the aerodynamic drag and lift of airfoil is presented. This work presents the configuration optimization of an aerofoil body in air using SST computational fluid dynamics (CFD) modeling and compared with the experimental result. The governing equations are solved with a finite-volume-based numerical …
Published in Journal of Aerospace Engineering & Technology · Vol. 4, Issue 3, 2014 · pp. 9–15 Read article
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CFD Analysis of NACA 2412 and NACA 2412 with Passage for Lift Augmentation
Abstract: Computational Fluid Dynamics (CFD) analysis of a three dimensional (3-D) National Advisory Committee for Aeronautics (NACA) 2412 airfoil was compared with same dimensional 3-D NACA 2412 with internal passage. The computational domain was composed of 2109509 elements for NACA 2412 and 2258962 elements for NACA 2412 with internal passage. Calculations were done for various Mach numbers by varying the angle of attack constant for above mentioned turbulence model. The flow …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 1–7 Read article
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Design and Numerical Analysis of Solar Powered Unmanned Aerial Vehicle Using Helium Gas
Abstract: The fundamental of unmanned aerial vehicle has been designed and runs for quite a while. This paper mainly focuses on the reduction of payload and power consumption resulting in increase of efficiency further by the use of helium gas in a solar powered unmanned aerial vehicle. In addition to these, another aim of the aircraft is its use in surveying purpose. A highly powerful live steaming camera is attached to …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 22–26 Read article
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Experimental Investigation of Lift forNACA 2412 Airfoil without Internal Passage with NACA 2412 Airfoil with Internal Passage in a Subsonic Wind Tunnel
Abstract: Wind tunnel experiments were carried out in a subsonic wind tunnel in Fluid Mechanics Laboratory at MITCOE, Pune. The objective of this research was to compare the experimental coefficient of lift and drag for a NACA 2412 airfoil with that for NACA 2412 airfoil with internal passage. Both the airfoils were of same dimensions and profile. The chord length (c) was 100 mm and the span (b) was 100 mm. …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 27–34 Read article
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Numerical Simulation for Strength Increase on Flat Plate Impacted By Bird Using ANSYS-AUTODYN
Abstract: Bird strike term indicates the collision between an aircraft and bird as occurred during flight can lead to structural damage of an aircraft. This work leads to improvement in aircraft structure by improving its strength and will be able to satisfy the FAR requirements. First of all considering a square flat plate and impacting the impactor at a velocity of 90 m/s performing analysis in ANSYS-AUTODYN software. Results validate with …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 38–43 Read article
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Numerical Investigation of the Effect of Downburst Wind on Buildings with Various Geometrical Shapes
Abstract: A “Downburst” is an important weather phenomenon in which an airmass comes down with high velocity towards the ground from the cloud level during a thunderstorm. Thunderstorms occur frequently in the eastern and north-eastern part of India. Thunderstorms over Gangetic West Bengal and Assam is popularly known as ‘Kalbaishakhi’ and ‘Bardoisila’ respectively. Severe thunderstorms are known to cause detrimental impact on various facets of national activity like civil and defense …
Published in Journal of Aerospace Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 34–41 Read article
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Composite Coating Techniques – A Review on Process Parameters and its Impact on Characterizations.
Abstract: Surface modification with composite coating technology is the need of the hour in most of the industries. Changing the bulk properties of the material by surface modification is one of the simplest techniques to do so, and this also avoids industrial downtime. An attempt is made in summarizing the processing techniques of developing composite coatings. The effects of coating parameters on the micro-structure, porosity, bond strength and micro-hardness have also …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 7, Issue 1, 2017 · pp. 1–7 Read article
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Computational Analysis of Epithelial Stratum and Physical Condition of Human Kidney Cells and Liver Cells Using Non Destructive Testing Technique by Scanning Acoustic Microscope
Abstract: The present work deals with the methodology governing scanning acoustic microscope (SAM) for non-destructive testing of biological samples (liver cells and kidney cells). Acoustic microscopy was performed on liver cells and kidney cells for measuring their thickness and also to determine their shapes. This technique was also used for evaluation of internal damage to cells. SAM images were taken for further qualitative and quantitative assessments. Using the quantitative data obtained …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 5, Issue 1, 2015 · pp. 1–4 Read article
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Big Data to Big Data Mining: Issues, Challenges and Data Analytics Solutions
Abstract: Data has evolved at a great pace due to increasing interest of people and valuable contribution towards the emerging technologies. Emerging technologies are successful in generating huge quantity of data from various sources which in return provides Big Data. Big Data constitutes large amount of data in terms of texts, statistics, facts, figures, and records, etc., generated from heterogeneous environment. Big Data needs special attention for storage, managing, transportation and …
Published in Current Trends in Information Technology · Vol. 6, Issue 3, 2016 · pp. 7–15 Read article