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International Journal of Engineering and Advanced Research Technology

Volume 2 Issue 5 (May 2016)

S.No. Title & Authors Page No View
1

Title : The forecasting of natural gas hydrate by using P-T figure method in gas well

Authors : Qiang Fan, Songtao Jiu, Guojing Gui, Shuai Yang

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Abstract :

Natural gas hydrate is crystalline clathrate compound. It’s formed by water and natural gas at low temperatures and high pressure. In the process of gas well’s production, it has the potential to form hydrate crystal layer and adhere to the pipe wall, even block the entire pipeline. Considering the coupling of temperature and pressure, this paper calculates the distribution of temperature and pressure in tube from the bottom by way of the point-to-point iteration, and then identifies whether the hydrate was generated with the point-to-point discrimination by using the P-T figure method. Through example, we know that the wellbore pressure and temperature coupling algorithm and P-T figure method are easy to use, and the result is precision enough. It can be used to analysis and calculation the production wells and test wells’s distribution of pressure and temperature and hydrate formation prediction, it can be satisfied the engineering requirement.

1-6
2

Title : Internal Flow Numerical Simulation Analysis of Coagulation Mixing

Authors : Pengzhi Liu, Yueqin Li, Xiaolong Luo, Ming Fan

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Abstract :

The internal flow field of a square container and a circular container was simulated by finite element software. The mixing result of fluid in the container and the influence on growth of the flocs during coagulation mixing were analyzed from the following four aspects: average turbulent dissipation rate, average speed, average turbulent kinetic energy and the scale of micro vortex. The result shows that the distribution of velocity field, turbulent kinetic energy field and turbulent dissipation energy field is more balanced in square container and leads to the formation of more λ scale of micro vortex. The hydrodynamic conditions are more favorable for the growth of the flocs.

7-11
3

Title : Fuzzy Sets Verses Vague Sets

Authors : Dr. Hakimuddin Khan

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Abstract :

In this paper the author describes fuzzy sets verses vague sets. Since we are familiar with the concept of ordinary sets. An ordinary set is the welldefined collection of objects, when a set equipped with an operation then the set is partial order set. or when it is equipped with two binary operations then this set is known as lattice.  zadeh  initiated in his classical work  [12] in 1965, the notion of fuzzy set theory as a generalization of the ordinary set theory which come out to be of far reaching implications. In the field of algebra. In this present paper we recollect some operations on fuzzy sets and Intuitionistic (vague ) sets.

12-14
4

Title : Numerical Analysis and Investigation of Temperature Distribution in a Furnace during Steady State Condition Using Yttria

Authors : J Govardhan, J Narsaiah

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Abstract :

This paper deals with an integrated numerical and experimental analysis work investigating into the effect of changes in temperature in a crucible furnace built for metal melting process. Furnace operating conditions employing the application of Yttria in place of brick used in furnace was carried out to study temperature variations inside the crucible furnace. The experimental values of temperature during conventional combustion carried out in a crucible furnace with brick lining were taken as boundary conditions as inputs and studied the temperature changes by embedding brick with Yttria at equal intervals of time schedule. The results indicate that by embedding the brick by Yttria resulted inenhanced temperatures at different zones inside the furnace and significance   impact on thermal radiation and the heat transfer rate in the furnace.

15-21
5

Title : Mobile Application for Post Childbirth Services (MPCB)

Authors : Anaas M. Otuom

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Abstract :

Health care service are easily available in the cities, however people in the rural area to far from hospitals and clinic woman who have just given birth potentially, is one of the most sensitive case in healthcare field. The health workers have to go to the rural areas to give health service as well as   to collect information about the mothers and baby after post-delivery manually. In this way of collecting and how ever the information the staff spends the time and the effort to go far to rural areas. The aim of this project to develop mobile application to the process of data Collection, retrieve and update enable health worker to collect information from mothers in rural areas the process of data collection, update record as well as provide information to the mother are while they provide the service during their visits. This system create for identify the user requirement for care of post-delivery application and also develop the prototype based on the requirement gathered and finally to evaluate the user acceptance by focusing on the functionality of the system. On the other hand this system create for gathering, retrieving data about mothers and baby after post-delivery by nurses in kkj (klinik kesihatan jitra ). Finally this system playing major role in improving the performance of accessibility to the data inside the system and also retrieving data become easy. The concern is not about rural areas .it is how the nurses want to keep track with the record /data about the baby after the mother has delivered.

22-30
6

Title : Study of DOS and band structures of fluoride perovskites (RbCaF3) : ab initio study

Authors : K. Neupane, R. K. Thapa

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Abstract :

In this paper, we present the result of density of states (DOS) and band structures for fluoride perovskite like RbCaF3. Calculation has been done by using the FP-LAPW method where generalized gradient approximation (GGA) is used. From our study we have found that the band gap of RbCaF3 is 6.8 eV.

31-33
7

Title : Information Hiding Techniques on Various Medium

Authors : Ramya.S , Poorani.G, Priya.J, Brindha.M

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Abstract :

Various steganography algorithms in different cover medium are reviewed here. By combining cryptography and steganography techniques, security is improved highly when compared to the information hiding process with one security techniques. The data can be hidden in any carrier like text, audio, images and video. Embedding capacity and noise ratio are used as a performance measure.

34-37
8

Title : Numerical Study on Axial Spiral Turbine for Down-hole Generator

Authors : Xiaodong Zhang, Huiping Lu, Xuehu Liu, Yan Gong, Wenwu Yang

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Abstract :

In order to study the hydraulic performance of spiral turbine for down-hole generator, three dimensional flow field simulation model of turbine was established. According to the actual working condition of down-hole Generator, theoretical calculation method of axial spiral turbine was given based on design theory of spiral turbine with constant pitch and uniform thickness. Furthermore,the performance of spiral blade was studied from the three main aspects of the stator and rotor’s spiral angle , rotation angle and blade number. By comparing simulation results with theoretical values, it verified the validity of the simulation model and the correctness of the theoretical calculation. Meanwhile, the influence of blade number, spiral angle and rotation angle on output torque, pressure drop and efficiency of the turbine were investigated. The results show that the influence degrees on torque value among the rotor’s and stator’s blade number, spiral angle, rotation angle are different. The blade number of stator and rotor is best for prime number, and it is relatively appropriate that the number of rotor blades should be more than the stator’s. For the blade number between stator and rotor is different, the corresponding values of optimal rotation angle and spiral angle are different. Spiral angle and rotation angle should not be too big or small. And the rotor’s spiral angle should be less than stator’s. Compared with the rotation angle, spiral angle plays a greater role in turbine hydraulic performance. In practice, the appropriate rotation angle should be selected to be matched with the corresponding spiral angle according to the design requirements.

38-43
9

Title : The Research on Erosive Destruction of Sliding Sleeve of Cementing in Horizontal Wells

Authors : Guo Jing Guo, Song Tao Jiu, Xiao Hua Li

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Abstract :

In order to research the wear pattern and reliability of the cementing sliding sleeve under the circumstance of high sand ratio and large flow, this article utilizes the Dense Discrete Phase Model(DDPM) to forecast the internal particle movement and distribution regularities of the cementing sliding sleeve; uses the erosive model given by Tulsa University to solve the erosion rate of the particle to the cementing sliding sleeve; designs related tests; analyzes the correlation between erosion rate and the quantity of the perforation under the circumstance of less change of sand ratio and flow and verifies the validity of the prediction model to the numerical modeling. The result indicates that numerical modeling can forecast the erosive location of the cementing sliding sleeve correctly and receive the quality loss through unit integral erosion rate. The tests differences from 14.03%, 10.15% and 6.46% explain that the numerical modeling can take well advantage of the cementing sliding sleeve erosive modeling under the high sand ratio. This article analyses the movement characteristics of the internal flow field and particle; explains the reasons of erosive destruction; applies the further optimized reference to cementing sliding sleeve.

44-48