A misperception about computational fluid dynamics is that it is only effective when designing a jet plane, a formula one car, or an outer space rocket. Today, building designers can apply the same basic principles in fluid dynamics tested on these exotic high-flyers to common building airflows.
Here are three reasons why you might consider CFD for your next building project.
1. Best guess approach — Although guided by ASHRAE standards, current HVAC specs are usually “best guesses” based on experience with various equipment and designs. Most engineers oversize HVAC units because they just don’t “know” exactly where thermal differentials including cyclic variations, radiant temperature asymmetries, and drafts will happen in an operating building. Using CFD insight, you can right-size HVAC solutions to eliminate redundant equipment and save costs.
2. BIM modeling is standard — The widespread adoption of BIM has led to an unprecedented ability to model new designs. Now, engineers and designers routinely run time and light studies, finite element analyses and energy efficiency studies working with the BIM model. The extension of a building model to CFD analysis is not the leap it may have been ten years ago. Now, airflow designers can run through a number of scenarios for ventilation and heating using different strategies inside the actual building model.
5 benefits of CFD analysis
1. Assess ventilation effectiveness before construction
2. Eliminate equipment redundancy
3. Weigh equipment costs against performance and environmental requirements
4. Substantiate performance claims
5. Locate supply/return for optimal airflow
3. Seeing is believing — CFD analyses produce easy to understand visuals that show the impact of design alternatives, allowing architects to move walls, alter service conduit pathways and change glazing effects—among other things—to improve energy efficiency and occupant comfort. These visuals are crucial in explaining to owners the impact of design changes, airflow strategies and or equipment purchases. When everyone can easily grasp the results of the sophisticated math behind CFD, you can reach agreement more quickly and with a higher level of confidence.
Typically, designers do not have the time, knowledge or technology to perform a CFD analysis. The alternative is to work with outsourced CFD experts to generate the best airflow strategy for your project. The key here is to find the right fit. Make sure your CFD supplier has a demonstrated range of experience with the kind of building you are designing.
Your CFD partners should recognize precisely how to properly model an environment to reveal key performance insights—thermal stratification and restricted flows, for example. In addition, your CFD consultant should be collaborative—working with the design team to explore options for improvement.
No matter what kind of project you are designing—a new manufacturing plant, a new residential building or healthcare institution, or a retrofit of a landmark office complex—a proper CFD analysis will save money in initial capital costs and far more over time in building operating and energy costs. As a designer, you can provide your client with a better, less expensive solution.
About the Author
Jason Pfeiffer is Director CFD Analysis Consulting with IMAGINiT Technologies. He can be reached at jpfeiffer@rand.com.
Related Stories
Architects | Oct 21, 2016
The AIA Innovation Award Recipients have been selected
The program honors projects that highlight collaboration between design and construction teams to create better process efficiencies and overall costs savings.
Architects | Oct 21, 2016
NASA Orbit Pavilion to debut at The Huntington Library at the end of October
The pavilion uses sound to represent the movement of the International Space Station and 19 earth satellites.
Higher Education | Oct 20, 2016
Designing innovative campuses for tomorrow's students
Planning for places that foster effective innovation is still an emerging process, but the constant pressure on universities to do so continues from two of their key institutional constituencies—students and employers, writes Perkins+Will's Ken Higa and Josh Vel.
Data Centers | Oct 14, 2016
Where data centers meet design
As technology continues to evolve, we have to simultaneously adapt and help our clients think beyond the short term, writes Gensler's Martin Gollwitzer.
Architects | Oct 13, 2016
Dallas architects recognized at 2016 AIA Dallas Built Design Awards
Six Texas-based projects lauded for design excellence.
Architects | Oct 11, 2016
A good imagination and a pile of junk: How maker culture is influencing the way AEC firms solve problems
“Fail” is no longer a dirty four-letter word: for maker culture, it has become a crucial stop along the way
Architects | Oct 4, 2016
Video blog: How to future-proof your workplace
Larry Lander, a Principal with PDR and a registered architect, discusses how modularity can improve a workplace for the business and the individual.
Architects | Sep 30, 2016
Ugly soviet parking garage takes on appearance of a cascading waterfall
Architect Ignas Lukaskas worked in conjunction with Vieta and the Vilnius Street Art festival to transform the building.
Architects | Sep 30, 2016
HOK partners with Delos to accredit its designers as wellness professionals
They are also working on the first WELL-certified city district, in Tampa, Fla.
Architects | Sep 29, 2016
Join Adrian Smith + Gordon Gill Architecture’s partners Adrian Smith, Gordon Gill, and Robert Forest for “AS+GG At Ten”
The event is a presentation of their work spanning the past 10 years.