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Visualizing the Inception of Flow Separation
Posted Fri July 31, 2009 @11:57AM
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News Researchers from MIT, San Diego State University, and United Technologies have developed a breakthrough methodology that allows engineers to precisely determine the location and angle of flow separation in both 2D and 3D as well as steady and unsteady flow conditions.

A Desktop Engineering article explains how “Our understanding of flow separation has just taken a big leap forward.”

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CD-adapco ATOMIC Consortium to Improve Fuel Spray Efficiency
Posted Thu March 19, 2009 @04:50PM
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Announcements CD-adapco, the leading provider of automated flow, thermal and stress simulation to the automotive industry, announces the formation of the ATOMIC project.

The ATOMIC project is focused on developing Computational Fluid Dynamics methods to model the atomization of sprays generated by engine fuel injection systems. The atomization process is critical to the efficiency and emissions of both diesel and gasoline engines.

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Researcher Extends Prandtl Boundary Layer Equations to 3D Unsteady Flows
Posted Tue September 30, 2008 @04:47PM
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News An MIT researcher may have solved a 100-year-old engineering problem.

In 1904, Ludwig Prandtl derived the exact mathematical conditions for flow separation to occur. But his work had two major restrictions: first, it applied only to steady flows, such as those around a car moving at a constant low speed. Second, it only applied to idealized two-dimensional flows.

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Fluid Dynamics Works on Nanoscale in Real World
Posted Thu April 19, 2007 @09:16AM
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News In 2000, Georgia Tech researchers showed that fluid dynamics theory could be modified to work on the nanoscale, albeit in a vacuum. Now, seven years later they've shown that it can be modified to work in the real world, too – that is, outside of a vacuum. The results appear in the February 9 issue of Physical Review Letters (PRL).

Understanding the motion of fluids is the basis for a tremendous amount of engineering and technology in contemporary life. Planes fly and ships sail because scientists understand the rules of how fluids like water and air behave under varying conditions.

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Density Functional Theory Simplifies Multiphase Simulation
Posted Fri July 09, 2004 @10:19AM
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News Traditional Eulerian multiphase simulation suffers from numerical problems at phase interfaces due to the large local density variation (eg. 1000:1 for water/air). The result is numerical instability and the need for a highly refined mesh at the (usually unknown/moving) interface location.

Density functional theory, however, describes the multicomponent multiphase mixture continuously without density jumps at interfacial surfaces. This is achieved by the introduction into the Helmholz energy, or into the entropy, square component density gradient terms. As a result the hydrodynamics of multiphase mixtures is described in a unified way meaning the governing system of equations is the same at any point in space.

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Purdue Calumet Gets Grant To Model Blast Furnace
Posted Thu February 05, 2004 @04:06PM
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News Purdue University Calumet has received a $200,250 state grant to continue the research and development of a state-of-the art blast furnace for the steel industry.

The grant was proposed to develop a computational fluid dynamics model of pulverized coal injection for the blast furnaces. The project will lay a solid foundation to develop a long-term R&D steel program as well as to expand applications to other industries, the proposal says.

In 2003, the university received a $1.29 million state grant develop a program that predicts where erosion is likely to occur in the lining of blast furnaces, allowing repairs to be made before a complete reline -- an extremely expensive process -- is needed.

The recent award will cover half the cost of the $400,500 project. Another half will be covered by the American Iron and Steel Institute. AISI, U.S. Steel and Ispat Inland Inc. are partnering on the project headed by Chenn Zhou, a Purdue Calumet professor of mechanical engineering.

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