Newsletters

Extracting Variables

"[W]hy is it so hard to get access to the data we need?"

Chorus is designed to help discern trends in large sets of data: scatter plots and line plots make tabular data much easier to interpret. But what if you wish to examine a derived variable such as an integral of a solution variable? Read this article – and watch the accompanying video – to see how you can marry Tecplot Macros with Chorus to easily create and extract such variables from a large number of CFD-analyses.

Share this post

Share on facebook
Share on twitter
Share on linkedin

Voxel Attributes

[T]he use of tetrahedra degrades the accuracy of classical numerical methods"

Voxel grids, in Pointwise, are fully point-matched across block boundaries. This is great since it means your solver will not have to deal with hanging nodes. However, the tradeoff is the use of pyramids to transition cell sizes. Remember that you can control the quality of pyramids, as outlined in this video.

Share this post

Share on facebook
Share on twitter
Share on linkedin

Managing Model Tolerances

"more consistent and reliable than CATIA V5's own CATIA V4 translator"

Using C1 continuity, points out this article, is attractive to CAD modelers since it “is a much lighter data representation and yet still looks very pleasing to the eye“. CFD, in many cases, requires much more precision than that, given first-cell spacings of the order of 1 micron are not uncommon. There’s no easy way out but there are some approaches that are better than others. A common trap: when a CAD application outputs an IGES file the results are almost always sub-standard.

Share this post

Share on facebook
Share on twitter
Share on linkedin

Surrogate Modeling Toolboxes

"Designed to make it easy for developers"

Chorus makes it remarkably easy to build surrogate models from your DOE or other sources of data. But what if you want to go beyond the modeling techniques built into Chorus? PyTecplot is your friend: put it togeher with a toolbox like SMT and watch your data come alive. And for a useful review of various modeling techniques, check the series of posts that starts here.

Share this post

Share on facebook
Share on twitter
Share on linkedin

Voxel Grids

"An efficient meshing technique that should benefit flow solvers"

A voxel, according to the internet’s fount of knowledge, represents a value on a regular grid in three-dimensional space. In Pointwise, a regular (or Cartesian) grid itself is referred to as a Voxel-grid. Sometimes referred to as “Hex-Core”, unstructured hexahedra have been available in Pointwise for a while now. See this video for a quick overview if you haven’t started using them yet.

Share this post

Share on facebook
Share on twitter
Share on linkedin

Model Tolerances

"It takes a bit of experience and understanding"

Sensory perception, this article points out, is a figment of your imagination. Remember that the next time you review appealing B-Rep rendering in your CAD application. This excellent writeup is a good place to start understanding why model-tolerances are such a critical aspect of CAD – and are yet brushed under the carpet in most CAD User-Interfaces.

Share this post

Share on facebook
Share on twitter
Share on linkedin
Newsletter

Sign up to our newsletter and get your latest posts emailed to you.

Search
Category
Categories
Archives
Archives
Follow Us
Weekly Tutorial

KFour Metrics offers technology solutions for engineering design, simulation and optimization.

Email

info@kfourmetrics.com

Phone

+91 93900 04190​

Address

Avanti, Road No.12, Banjara Hills,
Hyderabad 500 034, India.

Newsletter

Sign up to our newsletter

Newsletter

Sign up to our newsletter and get your latest posts emailed to you.

Search
Category
Categories
Archives
Archives
Follow Us
Weekly Tutorial