Fuel Tanks

Modeling Complex Storage Tanks

Gasoline tanks in airplanes, boats, and cars have complicated shapes that often include subcompartments. Often, there are other components (anti-slosh baffles, pumps, hydraulic boxes, etc.) submerged within these tanks, especially if the fuel is also serving a dual purpose as a coolant.

These partially-filled vessels are subject to motions which can cause fuel to shift within the tank, and perhaps flowing between subcompartments. Each wall, box, panel, and baffle represents a different thermal environment.

Now make it more complicated: ask for the fuel temperature as a function of time versus some flight or drive scenario. Actually, what is really needed is to find the minimum or maximum fuel temperature after scanning through hundreds or even thousands of mission scenarios, so an extremely fast solution is need. And, oh by the way, you need to model the entire vehicle to get the temperatures right.

FloCAD® Compartments are designed for just such challenges. The liquid surface can be shift dynamically as the vehicle turns or accelerates, or as the fuel drains. Coarsely discretized walls and other objects are "sliced" into wet and dry portions, applying customizable heat transfer relationships to each phase (liquid or gas/vapor ullage). If the fuel moves quickly between zones, even faster simulations can be made by assuming the same liquid surface everywhere within the tank.

Marine Fuel Tank: Initial, 20 minutes later, then 20 minutes after that. Total CPU time: 2 minutes on a PC.

Thermal-centric Modeling: You won't find capabilities like these anywhere else.

Click here to fetch the Marine Tank Example from our User Forum

Advanced Pipes in FloCAD
Thursday November 14, 9-10am MT (8-9am PT, 11am-noon ET)
This webinar introduces advanced features for FloCAD pipes in addition to working with complex geometry. Complex geometry includes interior fins and surfaces for heat transfer, flow around enclosed objects, annular flow, concentric pipes, and more. FK Locators and TEEs as modeling objects will also be introduced.
Custom Heat Transfer and Pressure Drops
Tuesday November 19, 2-3pm MT (1-2pm PT, 4-5pm ET)
Do you know what the default assumptions are in FloCAD, and whether or not they apply in your situation? Do you know how far you can go past that starting point? The answer: pretty far. There are numerous mechanisms in FloCAD for adjusting factors, scaling uncertainties, and applying different or supplemental correlations. This webinar summarizes the options available to you to customize your flow models to make sure that they apply to each new situation you encounter.
Heat Exchangers: Detailed and System-level
Thursday November 21, 2-3pm MT (1-2pm PT, 4-5pm ET)
This is two webinars in one. The first explains the use and assumptions behind the FloCAD HX system-level modeling object. The second webinar describes detailed-level modeling of complex heat exchanger passages, including application of Compact Heat Exchanger (CHX) methods.
Starting in 2020, we will begin offering Introduction to Thermal Desktop and Introduction to RadCAD as either in-person training or online training, alternating between online and in-person every three months. The training uses lectures and demonstrations to introduce you to basic Thermal Desktop and RadCAD usage. Hands-on tutorials provide practice building models and interpreting results (tutorials are completed by students outside of the online class time).
The next training class will be an online format in January 2020:
  • Introduction to Thermal Desktop (and SINDA) - A three-part series on January 14, 16, and 21 from 9am to 12pm, Mountain time
  • Introduction to RadCAD - January 23 from 9am to 12pm, Mountain time
For up-to-date schedules, fees, and policies, visit our Product Training page. To register for the class above, complete our registration form and select "Online" for the Training Format.
If you are interested in product training for your company based on your schedule, please contact us to obtain a quote for training between 8-12 attendees. We can come to your facility or the lectures can be presented online. Descriptions of the available classes can be found in our course catalog.
To keep up with our training opportunities, take a look at our new Events and Training Calendar.