(Nov. 5, 2013) -- Although wind resources in the United States are abundant, the cost of generating wind energy is still prohibitively expensive when compared to natural gas and fossil fuels. Researchers have documented that one of the key reasons the costs remain high is because wind turbines have shorter lifespans compared to other energy-producing technologies, which can be directly linked to wear and tear caused by turbulence.
Turbulence, which is often associated with bumpy airplane rides, is the primary reason that wind turbines do not perform at their optimal capacity. In a wind farm, or cluster of wind turbines, turbulence occurs from multiple physical processes arising from the wind, atmosphere, complex terrain and the rotor blades.
Finding a solution to this problem is precisely what Kiran Bhaganagar, UTSA researcher and assistant professor of mechanical engineering, plans to do with the support of three National Science Foundation (NSF) grants. Bhaganagar graduated from Cornell University under the tutelage of John Lumley, a legend in the field of turbulence, and has years of experience mastering the fundamental physics and mathematical framework of turbulence.
Totaling $400,000, the grants will allow Bhaganagar and her team of undergraduate and graduate students to pursue critical wind energy research on both land-based and offshore wind turbines to determine the optimal mechanical and aerodynamic conditions of the turbines.
"Our ultimate vision is to contribute to lowering the cost of generating wind energy by working with industries and federal agencies on what we discover is the most effective design and placement of turbines over complex terrains," said Bhaganagar.
This is the first time that a scholar in the UTSA Simulation, Visualization and Real-time Prediction (SiViRT) Center will study wind energy. Scholars in the center use computer simulation, high-performance computing and advanced visualization to research various topics in engineering and science with broad applications.
"Receiving NSF grants is important to UTSA as they invest in high-impact research of intellectual quality and excellence in education," said Mehdi Shadaram, interim dean of the UTSA College of Engineering. "Professor Bhaganagar is leading an important new research initiative for the college that will attract and generate top-quality students."
Using advanced computational modeling, the team will generate one of the first accurate representations of the detailed aerodynamics of tall, multi-megawatt, rotating wind turbines. The model will simulate 24-hour atmospheric conditions over complex terrains to accurately predict the power output from a wind farm. The simulations will be performed on a 6,400-node stampede cluster, one of the most powerful supercomputers in the world.
Preliminary studies by Bhaganagar's team have revealed that wake effects of the upstream turbines significantly affect downstream wind turbines, reducing their power by roughly 40 percent. The wake effects are cumulative, so each additional downstream turbine performs less and less efficiently.
Their research is expected to greatly enhance the fundamental science of wind engineering and the future of wind farm installations.
As one of few females in a historically male-dominated field, Bhaganagar is motivated to encourage more young women to pursue careers in engineering.
"One of my goals is to motivate and train young females in wind energy so that they can be a part of the solution to the world's energy crisis and an impending issue facing our country," she said.
Bhaganagar will conduct the research in partnership with the National Renewable Energy Laboratory and the National Wind Resource Center at Texas Tech University. Bhaganagar also has established strong ties with the Technical University of Denmark, the world leader in wind energy research.
One of the world's oldest sources of energy, wind is increasingly becoming a viable alternative to traditional energy sources. Texas is home to more wind power capacity than any other U.S. state with approximately one-third of the nation's wind installments. Texas also consumes more energy than any other state.
>> Learn more about Kiran Bhaganagar's research at her faculty website.
All UTSA faculty, staff and students are invited to attend open forums featuring finalist candidates for the dean of the UTSA College of Sciences.
Various Locations, Main Campus
UTSA is an early voting site for the statewide General Election.
H-E-B Student Union Bexar Room (HSU 1.102), Main Campus
The UTSA Office of the President and the UTSA College of Public Policy present a discussion on San Antonio’s charter amendments. Event will be livestreamed to UTSA Main Campus, Travis Room – HSU 2.202
Buena Vista Street Building Aula Canaria (BVB 1.328), Downtown Campus
More than 75 local, state and national graduate and professional schools will showcase their programs at the Main Campus. It's free and open to the public. Interested attendees are encouraged to register for the event in advance.
Sombrilla Plaza, Main Campus
Hosted by the UTSA Office of Information Technology Student Innovation Coalition, Tech Talk is a forum for students to share thoughts about technology on campus with IT professionals and learn about products and services available to help them succeed.
Student Union Denman Room (SU 2.01.28), Main Campus
UTSA Libraries will host Claudia García-Louis, assistant professor, at the Downtown Library for her presentation AfroLatinxs: Navigating Blackness and Latinidad in the Age of Trump, as part of the popular Pizza and Research series.
Buena Vista Street Building Downtown Library (BVB 2.314), Downtown Campus
Celebrate the 200th anniversary of Mary Shelley's "Frankenstein" with a viewing of the 1931 film adaptation. A discussion on the impact and evolution of the novel will introduce the film, led by English, Music and Medical Humanities faculty.
John Peace Library North Commons, 2nd Floor
UTSA Libraries will host K. Jill Fleuriet, Ph.D., for her lecture, Flipping the Script: U.S.-Mexico Border in the News and Alternative Visions.
John Peace Library Assembly Room (JPL 4.04.22), Main Campus
The University of Texas at San Antonio is dedicated to the advancement of knowledge through research and discovery, teaching and learning, community engagement and public service. As an institution of access and excellence, UTSA embraces multicultural traditions and serves as a center for intellectual and creative resources as well as a catalyst for socioeconomic development and the commercialization of intellectual property - for Texas, the nation and the world.
To be a premier public research university, providing access to educational excellence and preparing citizen leaders for the global environment.
We encourage an environment of dialogue and discovery, where integrity, excellence, inclusiveness, respect, collaboration and innovation are fostered.