George Miller: 12 percent may not sound like very much. On the other hand, 12 percent is 3.4 billion gallons of diesel fuel - equivalent to about 10 billion dollars saved every year. And it's also the equivalent of 36 million tons of CO2 going into the world's atmosphere.
Narrator: Kambiz Salari, a fluid dynamics researcher at the lab says they're using advanced computational fluid dynamics codes to identify critical drag producing regions around semi-trucks.
Kambiz Salari: Our role is basically to understand the technology and we do that typically by doing a lot of computational work and to understand the flow physics around the vehicle and then, given that knowledge, we design devices that reduce aerodynamic drag.
Narrator: For Science Today, I'm Larissa Branin.