Annette Hacker, director,
Office: (515) 294-4777
Students and researchers use Iowa State's Tornado/Microburst Simulator to study how wind storms affect buildings. Photo by Bob Elbert.
Partha Sarkar, Aerospace Engineering, (515) 294-0719
Bill Gallus, Geological and Atmospheric Sciences, (515) 294-2270
Mike Krapfl, News Service, (515) 294-4917
Chasing tornado data to engineer better buildings
AMES, Iowa -- Iowa State University researchers and students will soon be chasing tornado data in the lab and across tornado alley.
It's all part of a research project designed to increase scientists' basic understanding of wind storms and develop innovative ways to make homes and buildings stand up to tornadoes, microburst thunderstorms, hurricanes and gust fronts.
The project is supported by $1 million from the federal government's 2006 Science, State, Justice, Commerce and Related Agencies Appropriations Act. The money will allow a team of Iowa State engineers and meteorologists to focus on reducing the damage caused by wind storms. The money is coming to Iowa State through the National Oceanic and Atmospheric Administration.
The research team is led by Partha Sarkar, an Iowa State professor of aerospace engineering who holds the T.A. and Grace Miller Wilson Endowed Chair. The funding also supports research by Fred Haan, an assistant professor of aerospace engineering; Hui Hu, an assistant professor of aerospace engineering; Vinay Dayal, an associate professor of aerospace engineering; Bill Gallus, a professor of geological and atmospheric sciences; and Gene Takle, a professor of geological and atmospheric sciences and agronomy. The funding will also support as many as eight graduate students.
And it will send Colorado-based researcher Tim Samaras of Applied Research Associates Inc. -- whose work has been featured in National Geographic broadcasts and publications -- racing ahead of storms to take field measurements of tornadoes.
Gallus said students who have storm-chasing experience and safety training are expected to join Samaras as he travels tornado alley this May and June. The students will help Samaras deploy sophisticated probes containing sensing instruments and cameras.
They'll also test various methods to take tornado wind measurements as close to the ground as possible. Though today's radar technology can measure a tornado's wind speeds, the measurements are typically 100 feet off the ground. Gallus said nobody has ever taken precise measurements at ground level. That's because it's hard -- not to mention dangerous -- to put instruments in the path of a tornado. And tornadoes tend to destroy any instruments they touch.
Gallus said he may join Samaras and the students if their tornado chasing takes them close to Iowa.
"Wouldn't it be a thrill to be there when they collect the first wind measurements from inside a tornado?" said Gallus, who also noted he probably won't be getting as close to a tornado as Samaras.
Samaras said it makes a lot of sense to combine his field work with Iowa State's laboratory research.
"The collaboration between ISU and our tornado probe deployment team represents a perfect match to gather real, full-scale date for comparisons of ongoing modeling and laboratory experiments with tornadoes," he said.
Back in the lab, the research team will use Iowa State's Tornado/Microburst Simulator and its Aerodynamic/Atmospheric Boundary Layer Wind and Gust Tunnel throughout the summers of 2006 and 2007 to chase down data.
The researchers will focus on four major projects:
Sarkar said this research project will be a big boost to the wind engineering work at Iowa State.
"As part of this federal project, we will be enhancing our existing equipment, facilities and tools at Iowa State," Sarkar said. "That will take us to the next level of sophistication and competence."
And that will help Iowa State researchers develop the know-how to protect buildings and lives whenever the wind starts howling.
More information about Iowa State's wind engineering program:
More information about Tim Samaras: http://www.nationalgeographic.com/emerging/timSamaras.html
Iowa State University researchers will use a $1 million federal appropriation to:
"Wouldn't it be a thrill to be there when they collect the first wind measurements from inside a tornado?"
Bill Gallus, an Iowa State professor of geological and atmospheric sciences