Getting Started


What hardware and software do I need?

Computer: All CRTech software runs in the Windows operating system on a computer meeting the minimum system requirements.

CRTech Software: Thermal Desktop® is a geometric thermal modeler that operates in a powerful CAD environment. The underlying solution engine for Thermal Desktop is SINDA/FLUINT. RadCAD® is an optional Thermal Desktop module for radiation heat transfer within the thermal model or between the model and the environment. FloCAD® is another optional Thermal Desktop module for fluid modeling. TD Direct® is a powerful finite element mesher that works operates within SpaceClaim and creates an interface with Thermal Desktop. RadCAD, FloCAD, and TD Direct are all installed with Thermal Desktop and activated with license files.

Please see the Product Selection Guide for more information, or contact our sales department.

Third Party Software: A full product version of SINDA/FLUINT (as opposed to a trial version) requires Intel Visual Fortran. Thermal Desktop operates within AutoCAD. TD Direct operates within SpaceClaim. CRTech is a reseller of all of this software, so everything can be purchased together.

License: You will need a license for each part of the software you want to enable. FloCAD, RadCAD, and TD Direct are installed with every instance of Thermal Desktop, but they are only enabled with different license files. Contact CRTech to purchase a license.


How do I install the software?

See our Installation Instructions.


What learning resources are available to me, and how do I get support?

User Manuals: CRTech products install user manuals with SINDA/FLUINT, Thermal Desktop, and TD Direct. They can be accessed through the start menu: Start > All Programs > (SindaFluint or Thermal Desktop). The TD Direct manual is included in the Thermal Desktop folder from the Start Menu.

Tutorials: Tutorials are an excellent way to get aquainted with the software by starting with the basic operations of our software and gradually increase in complexity. Our tutorials are all located on our community forum. To access these you will need to log into our webiste.

Sample Models: CRTech offers a Samples and Applications Forum providing sample problems available to registered customers and evaluators. These sample problems are examples of how to use CRTech software for specific applications. Our Tips and Samples webpage provides a convenient filtering system help you find content withing this forum.

Training Classes: We offer training classes on all of our products. It is recommended that all new users attend one of our training classes. Although based on training notes available for download, these training classes provide a significant amount of information and instruction that can't be captured in training notes. We offer standard training classes where anyone can attend, or we can also provide specific training for a single organization. For more information, see our Training page. Some of these training classes have been recorded and are available on our recorded videos page.

Topic Classes: CRTech offers a variety of free short, online, topic-based classes. These classes are slightly more advanced because they cover a single topic in more detail. These classes are announced on our website and through newsletters. Recordings for some of these classes are available on our recorded videos page and notes are available upon request.

Recorded Videos: We have recorded several videos to help explain how to use our software.

Technical Support: If you need help, please start with the product user manuals. The Thermal Desktop manual provides information on the graphical user interface, compared to the SINDA/FLIUNT manual which provides in-depth information on the modeling details and methods. If you cannot find the information you need in the manuals, visit our community forum. After all, your question may have already been asked and answered by another user. If your question is still unanswered, please contact the support group. Support tickets may be conveniently created and transmitted from within Thermal Desktop through the Help menu.

flow regimes

Introduction to Two-phase Flow

September 24, 2-3pm MDT

This webinar introduces basic concepts in two-phase flow modeling including quality, void fraction, flow regimes, slip flow, pressure drops and accelerations, and heat transfer.

No knowledge of CRTech software is required. However, references to the corresponding FloCAD features will be made to assist users of that product.

Click here to register

Introductory FloCAD Training

Class times: September 5, 10, and 12, 2019, 9:00 am to 12:00 pm MDT daily
Cost: no charge (attendees must have an active support contract)

CRTech will be hosting introductory training for FloCAD (Flow Modeling in Thermal Desktop). This is our standard FloCAD class previously hosted in a classroom environment and now restructured for an online teaching environment.

The class will introduce single-phase fluid modeling concepts and how to build fluid models within the FloCAD work environment. Topics covered include an introduction to fluid modeling components, geometric versus non-geometric modeling options, working with FloCAD Pipes, solution control, and an introduction to path and pipe libraries.

The class will be broken into three two- to three-hour sessions held over a 3 day period. The format will be online lecture and demonstration with opportunities to ask questions. Hands-on lab work will be provided to students to work on after each session. To gain the most from this class, students are encouraged to attend all three sessions.

Prerequisites: Attendees must have basic working knowledge of Thermal Desktop as many of its base features will not be covered in this class but their usage is required for FloCAD.

Eligibility Requirement: This class is a service to our customers. All attendees must have an active support contract. If you are unsure of your support status, please contact CRTech.

Click here to register