About Hvtrans


Introduction
Hvtrans is a utility available in HyperWorks Desktop package, which allows to convert any solver native format support into h3d format.
As a starting point, let’s review the motivations to convert native data in h3d:
- File size: Conversion helps to reduce significantly native solver output files (especially Nastran op2, Ansys rst, LS Dyna d3plot and Radioss animation files).
Hvtrans also allows to select data types of interest, allowing extra file size reduction.
- Performances: Large result files (> 1Gb) from uncompressed formats may affect HyperView performances (load model, plot contours, envelopes, latency for rotation, …). h3d is the native h3d format then it is optimized for use in HyperView.
- Combination of multiple output files. Hvtrans can be used to merge together multiple output files into a single result files. Envelopes and/or linear superpositions can even be generated from Hvtrans
- Entry point for Physics AI. In our current version, PhysicsAI supports only h3d as result file format. Hvtrans is then the shortest way to convert results from other simulations in h3d. If source format is not recognized by Hvtrans, then use of Altair Compose is recommended:
First steps with Hvtrans:
Hvtrans can be used either in interactive mode, or batch mode. Let’s start with a tour of HvTrans interactive mode:
HvTrans can also be run in batch mode:
Going further with configuration files:
Configuration files can help with different cases:
- Create derived loadcases
- Combine several result files together
About Radioss and Hvtrans:
Radioss offers a native format called animation files (A001, A002, …). These files are controlled by /ANIM/… keywords in Engine file (_0001.rad). If you run Radioss jobs from Compute Console, Hvtrans is run automatically at the end of the simulation to convert the animations into a single h3d file.
If you run Radioss jobs from a cluster, you need to make sure to:
- Install both HyperWorks Mechanical Solvers and HyperWorks Desktop packages
- Execute Radioss with /altair_dir/altair/scripts/radioss script
Please note that from version 2019, we have implemented native h3d format in Radioss. This is controlled by /H3D/… keywords in the engine file (_0001.rad), and it does not require anymore hvtrans.
Please feel free to review the article below for more precisions about Radioss animations and H3D format:
ANIM or H3D: Which output should I use in my Radioss simulations? — Altair Community