 |
CFD Review |
 |
 |
Site Sponsors |
 |
 |
Tell a Friend |
 |
 |
 |
|
Help this site to grow by sending a friend an
invitation to visit this site.
|
|
 |
 |
 |
CFD News by Email |
 |
 |
 |
|
Did you know that you can get today's CFD Review headlines mailed to your inbox?
Just log in and select Email Headlines Each Night on your User Preferences page.
|
|
 |
 |
| |
  |
| Application: CFD Leads to Successful Design of Gas-Fired Preheater
|
|
 |
 |
Posted Mon April 29, 2002 @05:22PM
|
|
|
 |
 |
 |
by Serguei Nester, Principal Combustion Engineer, and
Joseph Rabovitser, Assistant Director
Gas Technology Institute
Des Plaines, Illinois
Computer simulation saved more than $100,000 dollars in the design of a new coal preheating technology for low NOx burners by making it possible to get the design right the first time. The Gas Technology Institute (GTI) is developing a NOx reduction process under a cooperative agreement with the Department of Energy to provide a cost effective, combustion-based alternative to selective catalytic reduction (SCR). Development targets include NOx reduction to below 0.15 pounds per million Btu, reduced CO2 emissions, and a 55% electricity cost reduction compared to SCR. The technology combines GTI’s Methane de-NOX reburn technology with a pulverized coal (PC) preheating approach developed for utility pulverized coal combustors by the All-Russian Thermal Engineering Institute (VTI). Many variations of the initial burner design were evaluated using computational fluid dynamics (CFD), making it possible for engineers to determine an optimized design concept. As a result, the initial prototype met the design objectives, eliminating the need to build and test additional prototypes at a cost that would have probably run into six figures each.
|
|
 |
 |
  |
| NASA Codes Used on Boeing Sonic Cruiser |
|
 |
 |
Posted Thu April 25, 2002 @07:26PM
|
|
|
 |
 |
 |
According to this NASA Tech Brief,
Boeing has incorporated an array of NASA-developed software to analyze designs of its new Sonic Cruiser commercial jet. NASA Overset CFD Software, Chimera Grid Tools, and Pegasus 5 software all are being used
to perform computational fluid dynamics (CFD) analysis of the aircraft design, reducing the amount of wind tunnel testing that will be needed.
NASA Overset CFD Software has been used by Boeing over the past year to run hundreds of CFD calculations. Chimera Grid Tools contains a variety of tools for the Chimera overset grid approach for solving CFD problems. It also contains a program known as OVERGRID, which serves as a graphical user
interface to most of the package tools. PEGASUS 5 is a series of mesh interpolation codes for flow analysis problems.
Boeing's Sonic Cruiser is a long-range (6,000 to 9,000 nautical miles) commercial jet that will carry between 200 and 250 passengers, and fly at the mid-40,000-foot level or higher at speeds between Mach 0.95 and
Mach 0.98. It will have lower nitrogen oxide emissions than today's commercial airliners, and will be quieter than upcoming noise standards and current airport requirements.
|
|
 |
 |
  |
| Pro/E: Workstation Benchmark 2002 |
|
 |
|
|
 |
CFD Image Gallery |
 |
 |
Quick Links |
 |
 |
Older Stuff |
 |
|