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Application: CFD Helps Increase Hot Oil Heater Output
Posted Mon June 17, 2002 @05:16PM
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Application Computer simulation helped increase the output of a hot oil heater by 20%. The challenge was to increase the thermal output of the heater without causing the tubes that carry the oil to rise to such a high temperature that they or the oil would be damaged. Refinery engineers ran experiments that demonstrated that the existing burner layout in the heater would indeed overheat the tubes if run at the higher levels required to implement the desired production increase. Without simulation, the only viable option would have been to build and test a scale model of the heater, which would have been expensive and would not have provided much information as to what was happening inside. Instead, engineers used computational fluid dynamics (CFD) to analyze the flow within the heater, providing a clear understanding of the problem and making it relatively easy to find a solution. “CFD helped us zero in on the offending flow pattern which turned out to be an inversion of flue gas in the middle of the radiant chamber, pushing the flame towards the tubes.” said Jack Deng, Chief Technologist for Petro-Chem, New York, New York. “Once we understood the problem, we changed the burner configuration to break up the flue gas recirculation patterns, and straighten the flames.”

Petro-Chem is a privately held international organization providing design, engineering, development, fabrication and erection of direct fired heaters and heater accessories in the hydrocarbon processing, chemical processing and energy industries.

( Read Full Article | Application )


New Software: MayaVi-1.2 Released!
Posted Thu June 13, 2002 @03:37PM
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Post Processing MayaVi is a free, easy to use, scientific data visualizer. It is written in Python and uses the Visualization Toolkit (VTK) for the graphics. It provides a GUI written using Tkinter. MayaVi is free and distributed under a BSD license. It is also scriptable and cross platform and should run on any platform where both Python and VTK are available.

For more information, downloadable sources and binaries, screenshots, installation instructions, documentation etc. visit the MayaVi home page on SourceForge.

Also bundled with MayaVi is a VTK pipeline browser written in Python and a new utility module that makes using VTK easier from the interpreter.

Changes: A license change from GPL/LGPL to BSD, a new interactive data picker and light manipulation kit, a new CellData to PointData filter, Geomview OOGL export support, a few more commandline options, important bugfixes, PDF documentation, and new RPMs and debs.

( Post Comment | New Software )


New Software: Coolit V4.50
Posted Wed June 12, 2002 @06:11PM
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News Daat Research Corp. has added multiple processor capabilities to boost the calculating speed of its CFD thermal and flow analysis software, Coolit.

When installed into a multiple processor system, Coolit automatically recognizes the number of processors and parallelizes the computation accordingly. The result is a significant speed increase that ranges from a minimum of 1.5 times to almost double for dual processors. For more processors, speed gains are even greater.

This latest Coolit release, version 4.50, also incorporates numerous new features that aid the model building process and increase modeling accuracy. Most significant is the addition of new shapes to the component library. Tetrahedron, pyramid and spherical cap components join the previously released triangular prism components to make possible more complex shapes and more accurate geometries.

Other changes in the new release included greater editing flexibility, a wider range of component characteristics, and customizable projections in panel views. Coolit v.4.50 also implements a new advanced model for porous media. The new model is a significant improvement over the standard Brinkman model, which is used in most commercial CFD programs.

Coolit v.4.50 operates on all Windows-based platforms: Windows 95,98,2000,XP and NT. More information on Daat and Coolit can be found on the Daat web site.

( Post Comment | New Software )


New Software: Virtual Vantage 3.0
Posted Fri June 07, 2002 @05:53PM
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Post Processing Fuel-Tech N.V., a world leader in air pollution control technology and advanced engineering solutions for energy systems, today announced the launch of Virtual Vantage™ 3.0 software, a state-of-the art virtual reality-based product used for the visualization of computational fluid dynamics (CFD) datasets in a 3D, interactive, immersive environment.

The Company’s proprietary Virtual Vantage technology which is based upon internally developed software for the visualization of complex CFD modeling results, provides users with high-end visualization services. This technology is a cost-effective and easy to use software tool that stimulates problem solving in a visual environment, accelerating design decisions and helping users to enhance their time to market.

Virtual Vantage 3.0 software is being introduced at the 2002 Fluent Users’ Group Meeting in Lebanon, New Hampshire on June 10-12. Through a strategic partnership, Fluent provides Fuel Tech with marketing support for its Virtual Vantage technology.

( Post Comment | New Software )


New Software: Free CFD Solver
Posted Thu June 06, 2002 @03:08PM
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NASA For limited time, you can receive the 3-D Navier-Stokes solver PAB3D limited edition free of charge. The limited edition will have all the options except it will limit the problem size to 500,000 grid points and the number of distributed computers to 4.

The PAB3D code, which was developed at NASA Langley Research Center, solves the three-dimensional Reynolds-averaged Navier-Stokes equations with a finite-volume formulation on structured multi-block grids. The flow solver has a robust (production quality) two-equation k-epsilon turbulence models with anisotropic algebraic Reynolds stress models. PAB3D also has the capability of modeling standard air real-gas effects. The code is capable of working in multiprocessors and distributed computer systems (CFD on Inexpensive Clustered Computers). This code has been used to simulate complex aerodynamic flow configurations and is currently being used in several national programs.

If you are interested, please fill the download registration form at http://www.eagle.com/demopab3d.html. The PAB3D solver has been tested using several operating systems, such as, LINUX, MAC, WINDOWS, SGI, SUN, and HP.

( Post Comment | New Software )


Education: Fluid Mechanics and CFD Review Course
Posted Wed June 05, 2002 @06:42PM
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ANSYS FLUENT Do you need an introduction (or re-introduction) to fluid mechanics, heat transfer and computational fluid dynamics? Fluent Inc. is offering a special two-day course designed specifically for this purpose. The next course offering is July 31-August 1, 2002. The main goal for our Fluid Mechanics and CFD Review course is to help the users of CFD to be more successful by having a more thorough knowledge of the underlying physics and numerical techniques that are present within CFD software packages.

It is assumed that participants will have a technical education and background, but not necessarily an engineering degree. The course will be conducted lecture-style, and the topics will be covered in a general fashion with no particular bias towards any CFD software package.

Visit the course web site for the course description, dates, locations, course fee information, and to register online.

You may also register by contacting Fluent’s Training Coordinator, Kelly Carter, at 603-643-2600 or mailto:klc@fluent.com.

( Post Comment | Education )


 
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