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Welcome to IJLERA! International Journal of Latest Engineering Research and Applications

Volume 01 - Issue 06 (September 2016)


Title:
Computation and Testing the Potential Flow Surrounded Cylinderical by Using OpenFOAM
Authors:
Hoai Nguyen, Le Chau Thanh Nguyen , Minh Man Pham
Source:
International Journal of Latest Engineering Research and Applications, pp 01 - 06, Vol 01 - No. 06, 2016
Abstract:
In fluid dynamics, the study of the potential flow plays an important role for aerofoils, water waves, electroosmotic flow, and groundwater flow. There are many closed-source software packages used to model as well as simulate the fluid behavior, and OpenFOAM is one of the most powerful tools which many researchers prefer. In this paper, OpenFOAM is therefore carried out to model potential flow surrounded cylinderical with the purpose of understanding the dynamics structural of the potential flow and their interactions. Also, at-two-dimensional, time accurate and finite-volume-based methodology is conducted to perform the computations. This solution indicates a net zero drag on the body of circular cylinder, pressure to achieve the maximum value on the surface of the cylinder, and it achieve the minimum value on the sides of the cylinder. Conversely, the velocity to achieve the maximum value on the sides of the cylinder, and it achieve the minimum value on the surface of the cylinder. The physical mechanisms of these phenomena are analyzed, is an excellent vehicle for the study of concepts that will be encountered numerous times in mathematical physics, such as vector fields, coordinate transformations, and most important, the physical interpretation of mathematical results.
Keywords:
A Computational Fluid Dynamic, Finite Volume Method, Incompressible Flow, Numerical Simulation, OpenFOAM,Potential Flow
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Title:
Wave-Induced Motion of Offshore Support Structures simulating Marine Down-Positioning by Crane
Authors:
Youn-Ju Jeong, Min-Su Park
Source:
International Journal of Latest Engineering Research and Applications, pp 07 - 13, Vol 01 - No. 06, 2016
Abstract:
In this study, in order to investigate wave-induced motion of offshore support structures simulatingmarine installation by crane lifting and seabed down positioning, wave-induced motion tests were carried out for the three types of offshore support structures under the regular wave conditions. As the results of this study, it was found that, GBS and Hybrid type indicated lower wave-induced motions than the Monopile under the normal wave condition. It caused by lower center of gravity of GBS and Hybrid. Therefore, in respects of the low swing motion during the marine installation work, it is advantaged to low center of gravity of the support structures. Hybrid model indicated the lowest wave-induced motion among the three models. It was caused by low wave force thanks to the multipile members of the upper part as well as low center of gravity. It is contribute to expand marine working time during the days and to save installation cost dramatically.
Keywords:
Support structure, Wave-induced motion, Test, Marine installation, Normal wave, Center ofgravity
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Title:
MODAL ANALYSIS OF OFFSHORE WIND SYSTEM WITH SUCTION BUCKET SUBSTRUCTURE
Authors:
Jeongsoo Kim, Min-Su Park, Youn-Ju Jeong
Source:
International Journal of Latest Engineering Research and Applications, pp 14 - 20, Vol 01 - No. 06, 2016
Abstract:
Modal behaviors of a 5MW offshore wind system including suction bucket foundation was analyzed by finite element model. A simplified rotor-nacelle-assembly was presented, and it was applied to modal analysis of the offshore wind turbine system. Parametric studies were also conducted to analyze effects of several designfactors on the natural frequency of the offshore wind system. The results show that the natural frequency is mainly dependent on the soil-suction stiffness than other factors. The presented numerical model was also applied to an offshore wind system on in-site seabed (southwestern sea of South Korea) to estimate its availability.
Keywords:
Modal analysis, sensitivity analysis, simplified rotor-nacelle-assembly model, soil-bucket rigidity
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Title:
The Effect of Magnetic flux Angle on the Voltage of Photovoltaic Cell
Authors:
Sawsan Ahmed Elhouri Ahmed & Mubarak Dirar Abdallah
Source:
International Journal of Latest Engineering Research and Applications, pp 21 - 23, Vol 01 - No. 06, 2016
Abstract:
In this work we examined the effect of magnetic flux intensity on the current and voltage of a commercial solar panel. The work was repeated with higher magnetic flux intensity to emphasize the results found on the first attempt.
Keywords:
Photo magnetic effect, solar panel, magnetic flux.
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Title:
A Concise Structural Design Procedure of a Multi-Cell-Tank of a Waste Water Treatment Plant
Authors:
Samir H. Helou
Source:
International Journal of Latest Engineering Research and Applications, pp 24 - 31, Vol 01 - No. 06, 2016
Abstract:
Waste water treatment plants tanks are invariably built below grade and are constructed of a series of adjacent smaller tanks properly linked to suit the water purification process. Design of such structures under static loadings poses little or no challenge. However, in seismic prone zones the structural design is rather involved since it involves the prediction of all seismic forces induced by the liquid on the walls of the tank comprised of a number of cells in addition to considering the various construction stages. This is a code obligation in order to guarantee that the treatment plant remains watertight under all projected loads and load combinations. It is prudent to mention that such considerations are overlooked under the pretense that seismic actions are of minor importance for structures built below grade. ACI 350.3 and ACI 350.06 outline the general requirements of the design of regular water tanks. The following is a detailed numerical account of the design undertaking of an actual project. The structural analysis procedure that follows is brief yet it addresses adequately the fundamental principles involved. Sectional slab or wall reinforced concrete design poses a trivial exercise hence it is not dealt with. The following discourse is limited to vernacular upright rectangular water treatment tank. The Tank's dimensions are relatively small leading to modest magnitude of forces; yet it is the procedure that forms the present focus.
Keywords:
Multi-Cell-Tanks; Water Treatment Plants; Impulsive Pressure; Convective Pressure.
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Title:
Smart Shoe
Authors:
Vaishnavi Nayak, Sneha Prabhu, Sanket Madival, Vaishnavi Kulkarni, Vaishnavi. M. Kulkarni
Source:
International Journal of Latest Engineering Research and Applications, pp 32 - 36, Vol 01 - No. 06, 2016
Abstract:
This abstract briefs about a development of inexpensive device called smart shoe which is designed to assist user in knowing how much distance they havecovered and how much calories they have burnt while walking or running. Proposed project is implementable for finding distance covered and total amount of calories burnt by using force sensitivity resistor. Advantages of such shoes include extensibility and low maintenance. The idea was to develop shoes that anyone can wear .The shoes will be designed in such a way that anyone who does running or walking by wearing these uniquely designed shoe they will get to know how much amount of calories they have burnt and how much distance they have covered through a mobile application. The idea being if you are looking for how much distance you have covered, open the app and click on distance. And if user is looking for how much calories burnt, open the app and click on calories. The mobile application will continuously receive the information from FSR sensor over the internet. In the past few decades, an unprecedented demand for wireless technologies has been seen. Mobiles and laptops are becoming part of everyday life of a growing number of devices that communicate wirelessly. Internet of things is becoming more popular everyday and it is being preferred due to its inherent advantages like security, effective communication.
Keywords:
FSR sensor, IOT
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Title:
Channel Estimation and Beamforming Techniques in Multiuser MIMO-OFDM Systems
Authors:
Salihath Pulikkal, Nandakumar Paramparambath
Source:
International Journal of Latest Engineering Research and Applications, pp 37 - 43, Vol 01 - No. 06, 2016
Abstract:
Multiple antenna communication has become one of the major focuses in wireless communication research. Transmit beamforming with receive combining is a simple method for exploiting the significant diversity provided by multiple-input-multiple-output (MIMO) systems and the use of orthogonal frequency division multiplexing (OFDM) enables low complexity implementation of this scheme over frequency selective MIMO channels. A major challenge to MIMO-OFDM systems is how to obtain the channel state information accurately and promptly for coherent detection of information symbols and channel synchronization. This paper describes three beamforming techniques to MIMO-OFDM system and LSE channel estimation to improve the BER performance of the system.
Keywords:
Channel Estimation, MIMO-OFDM, Beamforming.
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Title:
Lamp Spiritual & Meditational Aspects
Authors:
P. Manonmany
Source:
International Journal of Latest Engineering Research and Applications, pp 44 - 45, Vol 01 - No. 06, 2016
Abstract:
Meditation is a mind and body practice for increasing physical relaxation; mental peace improving psychological balance and enhancing overall health.it is a practice in a quiet location with few distractions but with attention focus and an open attitude towards diversions to come and let go naturally without judging them. The excessive senses attraction spoils the health of body and mind when it does not have a clear understanding. All visuals and physical body of all living beings is the association of energy particles. Inside the body the waves created by the dissolution of energy dust particles are called Bio magnetism. This wave is moving in a circulatory motion within the body.Avortex is created at the centre point due to the surrounding pressure force. All thoughts and deeds even feelings make an impact in the bio magnetic wave force. Each impact forms a knot and floats in Bio magnetic wave to reach the genetic centre toget recorded as an imprint.
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Title:
Fractal model to characterize spontaneous imbibition in porous media
Authors:
Kerunwa, A., Onyekonwu, M.O., Olafuyi, A. O. and Anyadiegwu, C.I.C.
Source:
International Journal of Latest Engineering Research and Applications, pp 46 - 54, Vol 01 - No. 06, 2016
Abstract:
Spontaneous imbibition is an essential phenomenon that exists in a many enhanced oil recovery processes. The imbibition of wetting liquid into porous media is an important driving mechanism for oil recovery. In this study, an analytical model was developed for the characterization of spontaneous countercurrent imbibition process of wetting fluid into gas-saturated rock over the entire time of imbibition process by utilizing the fractal characters of porous sediments. The weight of the imbibed liquid is a function of the pore fractal dimensions and contact area, porosity, tortuous capillaries, hydraulic diameter of pores, porosity, fluid properties, surface tension, as well as the fluid-solid interactions. The validity of the model was tested using published experimental data horizontal spontaneous imbibitions in g–water–rock systems. The model predictions are consistent with the published experimental data.
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