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Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, China


Talk Title
Green Energy from Oscillating Body in Ocean Current

Talk Abstract

Extraction of the renewable energy rapidly increases because of the recent research focus on ocean and wind energy. The ocean occupies 70% of the earth’s surface, and water is 1000 times heavier than air. This abundance and high density makes it superior for power generation capability over air. The ocean energy is present in two forms, i.e., waves in the vertical direction and currents in horizontal direction. While the former is seasonal or dependent on weather, the latter is persistent. Energy can be harnessed continuously from horizontal currents by employing alternating lift force technologies. Fluid flow over structures (i.e., foils, circular, square, rectangular cylinders) produce alternating lift force due to complex fluid-structure interactions. The lift force generates vibration of the structure. Flow-induced vibration (FIV) involves different phenomena such as vortex-induced and galloping vibrations. Kinetic energy of a violently vibrating structure or structures can be converted into electricity, running a generator. Study suggests that fish can utilize ocean currents for thrust benefits, far more efficiently than the traditional rotary turbines. Fish can be modeled as NACA0012 airfoil. This lecture will encompass (i) energy extraction from galloping vibrations of two circular cylinders of different diameters, casting light upon the mechanisms behind the galloping vibration and its sustainability, and (ii) estimation of energy extraction from two oscillating airfoils and finding the optimum condition.

Short Biography

Alam Md. Mahbub is a professor at the Shenzhen Graduate School of Harbin Institute of Technology (China) since 2012. He worked as a senior lecturer at the University of Pretoria (South Africa), research and postdoctoral fellows at the Hong Kong Polytechnic University, and lecturer at the Rajshahi University of Engineering and Technology (Bangladesh). He received MEng and PhD degrees from Kitami Institute of Technology, Japan, in 2001 and 2004, all in Mechanical Engineering. More than 200 technical articles are authored and coauthored, including 82 journal papers, most of which have been published in the top-notched journals, including Journal of Fluid Mechanics, Journal of Fluids & Structures, Physics of Fluids, Journal of Sustainable and Energy Reviews, Ocean Engineering, and Renewable Energy. Seven of the journal papers got positions in the lists of ‘TOP 25 HOTTEST ARTICLES’ and one paper has got a position in TOP 1% HIGHLY CITED ARTICLES in 2016 by THOMPSON REUTERS as of Science Indicator. He is the author of two books. He has edited two special issues in ‘Wind and Structures, an International Journal’ and a conference proceeding published in Research publishing, Singapore. He has secured a total of RMB9 million research funding from national and international levels. Prof Alam has received a number of awards: Japan Government Scholarship (monbusho) for Masters and PhD studies; JSPS (Japan Society for Promotion of Science) Postdoctoral fellowship; South Africa National Research Foundation (NRF) rating ‘Promising Young Researcher, Y1’; China 1000-young-talent scholar (青年千人计划); Shenzhen High-Level Overseas Talent; 2015 Shenzhen Outstanding Teacher; and 2017 Nanshan-District High-Level Talent. He is an editorial board member of ‘Wind and Structures, an International Journal’.

Talk Keywords
Ocean energy, galloping, hydraulic energy, power coefficient.
Target Audience
Students, Post doctoral, Industry, Doctors and professors
Speaker-intro video

The International Conference on Innovative Applied Energy (IAPE’18)