Journal of offshore structure and technology (vol1, issue2) by STM Journals Publication

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Journal of

Offshore Structure & Technology eISSN: 2349-8986

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Dr. Ajaykumar Ramdas Kambekar Assistant Professor , Department of Civil Engineering, Sardar Patel College of Engineering, Mumbai , India.

Dr. Anitha Joseph Professor, Department of Civil Engineering ,TKM College of Engineering, Kerala, India.

Engr. Habib Zaman Memon Lecturer, Institute Of Petroleum & N-Gas Mehran University of Engineering & Technology Jamshoro, Pakistan.

Dr. M. Zeinoddini Associate Professor KNT University of Technology, Tehran, Iran.

Dr. N. Vishwakarma Assistant Professor,N.I.T ,Raipur, India.

Dr. Nisith Ranjan Mandal Dean, SA, Professor, Ocean Engineering & Naval architecture, Indian Institute of Technology Kharagpur, W. B. , India.

Dr. Panneer Selvam Associate Professor Department of Ocean Engineering, IIT Madras, India.

Dr. Partha Bhattacharya Associate Professor,Jadavpur University, Kolkata, India.

Mr. Rano Soomro Lecturer, Institute of Petroleum and Natural Gas Engineering Mehran UET Jamshoro, Sindh, Pakistan.

Dr. Rizwan Assistant Professor,Department Of Civil Engineering, Dr B R Ambedkar National Institute Of Technology Jalandhar, Punjab, India.

Dr. Santosh G. Thampi Professor, Dept.of Civil Engineering, NIT Calicut, Kerala, India.

Dr. Sanjeev Anand Assistant Professor, School of Energy Management, Shri Mata Vaishno Devi University, Jammu & Kashmir, India.

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STM JOURNALS

I take the privilege to present the print version for the [Volume 1 Issue (2) ] of Journal of Offshore Structure and Technology. The intension of JoOST is to create an atmosphere that stimulates creativeness, research and growth in the area of Offshore Structure and Technology. The development and growth of the mankind is the consequence of brilliant Research done by eminent Scientists and Engineers in every field. JoOST provides an outlet for Research findings and reviews in areas of Offshore Structure and Technology found to be relevant for National and International recent developments & research initiative. The aim and scope of the Journal is to provide an academic medium and an important reference for the advancement and dissemination of Research results that support high level learning, teaching and research in the domain of Offshore Structure and Technology. Finally, and Authors for their continued support and invaluable contributions and suggestions in the form of authoring I express my sincere gratitude and thanks to our Editorial/ Reviewer board write ups/ reviewing and providing constructive comments for the advancement of the journals. With regards to their due continuous support and co-operation, we have been able to publish quality Research/Reviews findings for our customers base. I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.

Dr. Archana Mehrotra Director STM Journals

Journal of Offshore Structure and Technology

Contents

1. Anthropogenic Wind Mill Hindinamani S, Bhirudev H

2. Petroleum and The Nigerian Economy (1999â&#x20AC;&#x201C;2007): Between NEO-Colonialism and Domestic Collaborators Ndaliman Alhaji Hassan, Auwalu Musa

3. Power Quality Enhancement on Grid Integrated Wind Energy System with the help of STATCOM Shivachandra Hindinamani, Santhosh G

4. 3D Finite Element Analysis of Marine Risers under Random Loads Rizwan A. Khan, Suhail Ahmad

Journal of Offshore Structure and Technology ISSN: 2349-8986 (online) Volume 1, Issue 2 www.stmjournals.com

Anthropogenic Wind Mill Hindinamani S1*, Bhirudev H2 1

Mechanical Engineering Dept., N.M.A.M. Institute of Technology, Nitte, Karnataka, India 2 MD Electricals Pvt Ltd., Pune, Maharashtra, India

Abstract Electricity can also be generated from artificially generated wind using blower. A prototype model can be developed which generates constant power from artificially generated constant flow of wind. Artificially generated air is flown through wind mill which is coupled to an alternator in such a way that constant electricity is generated. This wind mill is called the anthropogenic wind mill (AWM). Anthropogenic is basically a Greek word which means “artificial.” This project tries to give that mass flow rate at inlet and outlet are approximately the same, but velocity of air at the outlet is four times of velocity at the inlet.

Keywords: AWM, KE, CFM, WE

Journal of Offshore Structure and Technology ISSN: 2349-8986 (online) Volume 1, Issue 2 www.stmjournals.com

Petroleum and The Nigerian Economy (1999–2007): Between NEO-Colonialism and Domestic Collaborators Ndaliman Alhaji Hassan, Auwalu Musa* Department of Political Science and Public Administration, Adamawa State University, Mubi, Adamawa State, Nigeria Abstract This paper analyzes the state of the petroleum sector and its impact on Nigerian economy from 1999–2007. The manner in which the sector was managed attracted a wide range of comments on the rationale for the administration’s handling of the petroleum industry. Between 1999 and 2007, President Obasanjo’s Government failed to reposition the Nigerian oil sector in such a way that it will benefit all Nigerians. Instead, the administration opened the sector to foreign exploitative economic order. The policy during the period is tantamount to development of underdevelopment in the oil sector in terms of management, administration and control. It is a situation in which while oil is produced in Nigeria, Nigerians do not produce oil. The paper starts with an introduction, followed by a brief history of refineries and the development of petroleum industry in Nigeria, and then the state of refineries during the period between 1999 and 2007. The third aspect is the theoretical framework and conceptual issues, deregulation, withdrawal of subsidy and hike in the price of petroleum products. Finally, there is conclusion and recommendations.

Keywords: Neo-colonialism, petroleum, collaborators, deregulation, hike

Journal of Offshore Structure and Technology ISSN: 2349-8986 (online) Volume 1, Issue 2 www.stmjournals.com

Power Quality Enhancement on Grid Integrated Wind Energy System with the help of STATCOM Shivachandra Hindinamani*, Santhosh G Mechanical Engineering Dept., N.M.A.M. Institute of Technology, Nitte, Karnataka, India Abstract In this paper, the power quality enhancement on grid integrated wind energy system (PQEGWES) using STATCOM is presented. This scheme aimed to improve the power quality of the grid integrated wind energy system using BESS is used for charging the capacitor in STATCOM. The injection of wind power into the grid affects the power quality of the system. Some of the power quality issues are voltage sag and harmonics. In this proposed system, simulation model of 3-phase system without-compensation and with-compensation are modeled and simulated. In this system, a STATCOM is used and it is capable to improve grid voltage and reduce the harmonic components.

Keywords: Power quality, STATCOM, wind turbine (WT), wind generator (WG), BESS

Journal of Offshore Structure and Technology ISSN: 2349-8986 (online) Volume 1, Issue 2 www.stmjournals.com

3D Finite Element Analysis of Marine Risers under Random Loads Rizwan A. Khan1*, Suhail Ahmad2 1

Department of Civil Engineering, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India 2 Department of Applied Mechanics, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, India

Abstract The dynamic response of marine risers under long crested random sea is obtained in time domain using finite element solver ABAQUS/AQUA. The response analysis is based on a simulation technique which duly considers various nonlinear effects such as relative velocity squared drag force, variable added mass due to variable submergence and nonlinearity due to large excursions. It also accounts for variable tension in the riser due to variable submergence, variable buoyancy and wave forces. Results are presented which illustrates the effects of nonlinearities, long-term drift oscillations and instantaneous motion of the vessel and current velocity on the bending stress in the marine risers. The response time histories are obtained and presented in terms of bending stress envelopes and spectra showing contribution of various harmonics which is significant because of a nonlinear system.

Keywords: Marine risers, random waves, vessel motion, drift oscillation, dynamic response