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New Software: Major Upgrade to GAMBIT Pre-Processor Released
Posted Tue July 15, 2003 @09:18AM
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ANSYS FLUENT Fluent Inc., the world leader in CFD, announces the release of GAMBIT 2.1, a major upgrade to Fluent’s geometry and mesh generation software. This version provides several new key functionality advantages to CFD users:
  • Improved Geometry Cleanup Tools
  • Automated Meshing with HexCore Technology
  • Improved CAD Integration

GAMBIT 2.1 has a semi-automatic cleanup tool for repairing and preparing a CFD geometry for high quality meshing. Holes, overlapping faces, small features, sharp corners, etc. are quickly identified and various tools are directly accessible in the code to resolve this range of problems.

( Read Full Article | New Software )


New Software: Leading Edge Visualization Software ACUITIV v3.3 Released
Posted Mon July 14, 2003 @09:22AM
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Post Processing ACUITIV(TM) Software, the leading provider of next-generation Computational Fluid Dynamics (CFD) visualization software, today announced the availability of ACUITIV v3.3. As the only industry offering with a new, cutting-edge architecture that utilizes the state-of-the-art VR Juggler(TM) and OpenGL(TM) libraries, ACUITIV v3.3 provides unmatched decimation, intuitive navigation, seamless integration with immersive environments, full 3D graphical capabilities, and CGNS reading. With today's announcement, ACUITIV introduces the first true 21st Century CFD visualization software solution for numerous industries, including automotive, aerospace & defense, chemical processing, and energy.

With deep standards expertise, ACUITIV has a laser focus in providing the only enterprise-class CFD visualization software solution. ACUITIV provides customers with the immediate ability to uncover new opportunities, improve designs, accelerate decisions, and shorten time to market that maximizes the full potential of CFD.

( Read Full Article | New Software )


Application: Submarine Periscope Plume Modeling
Posted Fri July 11, 2003 @11:25AM
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Application By Paul Steer
Hydrodynamics Technology, QinetiQ, UK

A submarine is the ultimate "stealth ship". Its greatest asset is the element of surprise - the ability to remain hidden under the sea. But the security blanket of millions of tons of ocean works both ways, because it also restricts the ability of the submarine's crew to see out. Hence the need for a periscope, or "visual system mast", to see above the water while remaining submerged. In fact, modern submarines have a suite of masts that raise a variety of devices above the water surface.

( Read Full Article | Application )


AVL Sees Strong Demand for Web Based Meshing
Posted Thu July 10, 2003 @11:35AM
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AVL AVL started their one of a kind web based eFAME meshing service in December 2002 and since then, the success has been outstanding. The unrivaled fast mesh generation and easy purchasing process has convinced many CAE specialists to use the service. An important feature of the service is a guaranteed 48 hour response time regardless of problem size.

The field of application is nearly unlimited, and the hybrid meshes generated are of high quality. The eFAME service benefits from AVL's FAME development work. Meshes, generated with the latest version, FAME Advanced Hybrid, are characterized by wall layers and a high portion of hexahedral elements. Tetrahedral and pyramidal elements are used in transition layers from coarse to fine (and vice versa).

The results are very efficient meshes with a comparable low number of elements - an important benefit for the solver calculation time, which directly corresponds to the number of elements. Mesh efficiency is further supported by the automatic feature size recognition capability, which identifies sharp edges and strong curvatures and automatically refines the mesh in those areas.

For more information about the eFAME service, visit http://meshing.avl.com.

( Post Comment )


Apple G5 Benchmarked for CFD Analysis
Posted Wed July 09, 2003 @09:14AM
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Hardware An engineer at NASA Langley has benchmarked the new Apple G5 workstation for use in computationally expensive CFD analysis.

The jet noise prediction tool, Jet3D, was run on a dual processor G5 in order to determine performance compared to the older Apple G4 and an Intel Pentium 4 system.

The Jet3D code is written in FORTRAN and C and has been written in both a double precision scalar and vector version. The vector version was optimized to run on the AltiVec instruction set on the G4 and G5 processors and will not run on the Pentium 4 machine.

It should be noted that the G4 and G5 systems had two processors while the P4 system had a single processor. Therefore, only single processor results are presented for the G4 and G5. Furthermore, it is also important to remember that the G5 is a 64bit architecture whereas the P4 is 32bit. This will have a significant impact on the performance of a double precision code such as Jet3D which is using 64bit words. Lastly, the G5 is at a disadvantage because optimized compilers for the new architecture are not yet available.

Results from running the scalar version of Jet3D show that the 2.0GHz G5 is equal in performance to the 2.66GHz P4 system at 255 MFLOPS (million floating point operations per second).

Results from running the vector version of Jet3D show that the G5 can produce an impressive 2755 MFLOPS performance on vector optimized code.

From these results, it would seem that the new offering from Apple can hold its own in computational intensive applications such as CFD.

( Post Comment )


New Software: Hanley Releases Wing-Tail Aerodynamics Calculator
Posted Tue July 08, 2003 @03:01PM
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News Hanley Innovations, a small business specializing in aerodynamics and fluid dynamics software development for education and industry, announced today the release of Dr. Hanley’s Aerodynamics: The Wing-Tail Calculator.

The Wing-Tail Calculator was developed using a vortex lattice (vortex rings) CFD method. The program is quite powerful and yet easy-to-use.

Wing-Tail can be used to:

  1. Compute lift-drag coefficients for an isolated wing
  2. Compute lift-drag coefficients for a wing-tail system
  3. Determine neutral points for wing-tail system
  4. Compute trim angle
  5. Compute the aerodynamic coefficients at the trim angle
  6. Simulate ground effect

( Read Full Article | New Software )


 
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