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Research: Simution of Bubble Column Reactors
Posted Sun May 18, 2003 @10:01PM
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Help Desk I am Ph.D student and doing bubble column simulations...problem consists of sparging air in a column filled with water. I am using FLUENT 6.0 and FLUENT 4.5.6 for the simution. I need a help in specifying the boundary condition at the top to model the escaping air.

As such I am putting a velocity inlet as the top boundary condition, but resulting in convergence problem. I tried outflow or outlet condition, which is little bit unrealistic as air is escaping from the top surface...Can anybody help?

( Post Comment | Research )

Need Help with Two Phase Problem!
Posted Fri May 16, 2003 @06:06PM
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Help Desk Sak writes "I am working on a heat transfer related geometry in Fluent which has two phases, a solid and liquid in contact. I get an interface between two phases, i.e., wall boundary and a "shadow" of the same boundary.

I want to define these boundaries with a particular temperature, but I can't do it. I have to "couple" these two boundaries. I can either assign some thickness to that boundary or/and assign heat generation (W/m3) value to it.

Is there anyway, I can assign temperature to these walls ?

Also, from wall and wall shadow, how can I know which boundary refers to solid phase and which one to liquid phase, when in the display it shows me the same boundary?"

( Post Comment )

Application: CFD Demonstrates Safety of Nuclear Waste Facility
Posted Fri May 16, 2003 @05:25AM
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Application By Ronald Graves and Kelly Thomas
Aiken, South Carolina

Computer simulation helped Westinghouse Safety Management Solutions (WSMS) engineers demonstrate that benzene mixing within a large vapor space would proceed quickly enough to prevent the formation of a significant volume of gas above the lower flammability limit (LFL). This issue arose in the licensing of a nuclear waste processing operation that produced benzene as a byproduct. While experimental methods could only measure benzene concentration at a few discrete points, computational fluid dynamics measured it throughout the vapor space as a function of time. The analysis correlated well with physical measurements.

Westinghouse Safety Management Solutions is a wholly owned subsidiary of Westinghouse Savannah River Company (WSRC). WSRC is the prime contractor for the DOE Savannah River site in Aiken, SC, and performs all types of safety work for the DOE facilities around the country.

( Read Full Article | Application )

Events: Meet AVL at Several Upcoming Events
Posted Thu May 15, 2003 @01:57PM
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News AVL presents unique software solutions on CFD and Structural Mechanics around the world. It would be great to welcome you at the listed events.

May: Right now you can visit us at the Simpat 2003 (WUA-CFD) in Germany and at the Vienna Motorsymposium. We are going to present our CFD aeroacoustic module at the Styrian NVH Congress and we will be at the VTMS-6 Conference in Brighton and at the JSAE with a special AVL software workshop. Donīt miss our booth at the 2nd Auto Conference in Southfield MI and the paper presentation at the NAFEMS World Congress in Orlando.

June: Rieter Congress in Switzerland - Engine Expo in Stuttgart, Germany - ERC Symposium Madison, Wisconsin- Abaqus User Conference, Munich - EAEC-SIA Congress in France - 2nd MIT Conference in Cambridge

July: Asia CFD Conference, Korea - Virtual Product Creation Conference, Stuttgart, Germany - ASME/JSME Honolulu - ICIAM 2003 Sidney - ICLASS 2003, Italy...

Actually, there is no way to list all activities. Many other exhibitions, congresses and workshops are planned around the world - if you would like to get detailed information please contact us at

( Post Comment | Events )

Business: Icepak Software is Hot in a Cold Market
Posted Thu May 15, 2003 @01:02PM
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News In an economy where negative growth is all-too-normal, Fluent Incorporated reports dramatic and sustained growth in its computational fluid dynamics software products, particularly its Icepak™ software for desktop simulation of electronics cooling. Icepak, which entered the electronics cooling software market 7 years ago, grew its total revenue by 19% and thermal software license revenue by 12% in 2002 worldwide. In the first five years of its existence, its annualized growth was 60%. The software revenue in the first quarter of 2003 grew by 15% over the same period last year.

Swimming Upstream

How has this software achieved such robust growth while serving an industry in a downturn? "Thermal modeling in the design process is relatively new, and as its benefits have been seen more clearly amongst electronics designers, it has naturally become a 'must-have' tool on the designer's desktop, so some of this is driven by the growth curve of thermal modeling as a technology," says Prabhu Sathyamurthy, Icepak Business Manager for Fluent.

( Read Full Article | Business )

Events: CFX Seminars in Spain, Belgium & The Netherlands
Posted Wed May 14, 2003 @02:59PM
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News CFX is organising a series of free seminars in Spain, Belgium and The Netherlands. CFX users will describe applications and case studies during the seminars.

Examples from industries such as automotive, process, oil & gas, HVAC, fire & safety will be presented. Attendees will have the opportunity to try out the software and discuss particular applications.

Seminar locations are: Madrid (3 June), Bilbao (4 June), Barcelona (5 June), Amsterdam (22nd September), Rotterdam (23rd September), Antwerp (24th September), Brussels (25th September), Utrecht (26th September.)

Further information and a registration form can be obtained from the seminar website.

( Post Comment | Events )

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