Articles

Articles provide definitions and insights into Computer-Aided Engineering (CAE) analysis with a focus on Computational Fluid Dynamics (CFD).

The Case For Caedium

A presentation that makes the case for Caedium: affordable Computational Fluid Dynamics (CFD) software for all.

Convection and Heat Transfer

Heat transfer plays a primary role in the design of electronics cooling and Heating, Ventilating, and Air Conditioning (HVAC) systems. Heat transfer also plays an important role in many other applications, such as gas turbines, heat exchangers, brakes, and even people.

OpenFOAM 1.7.x on Windows 64-bit with Native MPI

For the latest version of our Windows patch for OpenFOAM visit "OpenFOAM 2.2.x on Windows".

We have updated our Windows patch for the latest OpenFOAM® release (v1.7.x). As with the previous patch version this also supports 64-bit compilation using the MinGW-w64 cross-compiler and parallel computation using the native Windows MPI implementation provided by the free Microsoft HPC SDK and also available on Microsoft Windows HPC Server 2008 for clusters.

OpenFOAM 1.6.x on Windows 64-bit with Native MPI

For the latest version of our Windows patch for OpenFOAM visit "OpenFOAM 2.2.x on Windows".

The latest version of our Windows patch for OpenFOAM® 1.6.x now supports 64-bit compilation using the MinGW-w64 cross-compiler and parallel computation using the native Windows MPI implementation provided by the free Microsoft HPC SDK and also available on Microsoft Windows HPC Server 2008 for clusters. Be warned, as always, that to build OpenFOAM for Windows with a cross-compiler requires expert knowledge of Windows and Linux utilities and compilers.

How to Configure MSMPI for the MinGW-w64 Cross-Compiler

Jan. 21, 2013: Updated instructions for HPC Pack 2012 MS-MPI Redistributable Package

Here you'll find the instructions on how to create libmsmpi.a for the MinGW-w64 cross-compiler to link against for MPI applications, given the free MS-MPI Redistributable Package. Once configured with the msmpi library an MPI application can run in parallel on a multi-core Windows machine or in parallel on Microsoft Windows HPC Server (cluster). Using the technique described here a modified version of OpenFOAM for Windows was configured with native MPI support.

OpenFOAM 1.6.x on Windows

For the latest version of our Windows patch for OpenFOAM visit "OpenFOAM 2.2.x on Windows".

We have updated our Windows patch for OpenFOAM to match the latest OpenFOAM release (v1.6.x). Be warned - to build OpenFOAM for Windows with a cross compiler requires expert knowledge of Linux utilities and compilers.

Reynolds-Averaged Navier-Stokes Equations

Most people are intuitively aware that the fluid flow of both gases and liquids is inherently transient (unsteady) by nature. As an example, just ponder the movement of leaves on a tree in a breeze or the flow of water from a tap. Less intuitive is that even a relatively steady flow in a wind tunnel has transient velocities that vary at scales and frequencies that our human senses are unable to discern. Such variations are known as turbulence. The treatment of turbulence in the Reynolds-Averaged Navier-Stokes (RANS) equations lies at the heart of most practical Computational Fluid Dynamics (CFD) approaches.

Cyclone Flow Simulation: Solving the RANS equationsCyclone Flow Simulation: Solving the RANS equations

Fourth OpenFOAM Workshop 2009 Abstract

Abstract accepted for: Fourth OpenFOAM Workshop, June 1-4 2009, Montreal, Canada

Caedium: An Interactive Simulation Environment for OpenFOAM

Richard Smith, Symscape

Caedium is a CAE system designed to support CFD and other forms of analysis. The latest addition to the Caedium modular architecture is the RANS Flow add-on, which provides an interactive environment for a selection of RANS OpenFOAM solvers.

Figure 1, Caedium RANS Flow Add-On Flow Simulation.Figure 1, Caedium RANS Flow Add-On Flow Simulation.

OpenFOAM 1.5.x on Windows

For the latest version of our Windows patch for OpenFOAM visit "OpenFOAM 2.2.x on Windows".

We have updated our Windows patch for OpenFOAM to match the latest OpenFOAM release (v1.5.x). Be warned - to build OpenFOAM for Windows with a cross compiler requires expert knowledge of Linux utilities and compilers.

Dimensionless Numbers

Dimensionless (or non-dimensional) numbers, such as the Reynolds number and Mach number, are a general concept (extensively used within fluid dynamics) to allow comparison between similar flow physics carried out at different scales and with different fluid properties.

Dimensionless Pressure Coefficient Contours on a VenturiDimensionless Pressure Coefficient Contours on a Venturi

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