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
| Mar 21, 2014
Forget wood skyscrapers - Check out these stunning bamboo high-rise concepts [slideshow]
The Singapore Bamboo Skyscraper competition invited design teams to explore the possibilities of using bamboo as the dominant material in a high-rise project for the Singapore skyline.
| Mar 21, 2014
Pier Carlo Bontempi to receive Richard H. Driehaus Prize from Notre Dame
Established in 2003 by the Notre Dame School of Architecture, the $200,000 Richard H. Driehaus Prize is awarded to a living architect whose work embodies the highest ideals of traditional and classical architecture in contemporary society, and creates a positive cultural, environmental and artistic impact.
| Mar 21, 2014
How to get more referrals
If you’re having a hard time attracting new referrals, here are a few techniques for increasing the number of interactions with potential clients.
| Mar 20, 2014
Common EIFS failures, and how to prevent them
Poor workmanship, impact damage, building movement, and incompatible or unsound substrate are among the major culprits of EIFS problems.
| Mar 20, 2014
D.C. breaks ground on $2B mega waterfront development [slideshow]
When complete, the Wharf will feature approximately 3 million sf of new residential, office, hotel, retail, cultural, and public uses, including waterfront parks, promenades, piers, and docks.
| Mar 20, 2014
13 dazzling wood building designs [slideshow]
From bold structural glulam designs to striking textured wall and ceiling schemes, these award-winning building projects showcase the design possibilities using wood.
| Mar 20, 2014
Fluor defines the future 7D deliverable without losing sight of real results today
A fascinating client story by Fluor SVP Robert Prieto reminds us that sometimes it’s the simplest details that can bring about real results today—and we shouldn’t overlook them, even as we push to change the future state of project facilitation.
| Mar 19, 2014
Architecture Billings Index shows slight improvement
The American Institute of Architects (AIA) reported that the February ABI score was 50.7, up slightly from a mark of 50.4 in January.
| Mar 19, 2014
Gehry, Zaha, Foster, Meier: Vote for your top 'starchitect' in this March Madness design legends tourney
Fast Company's Bracket Madness tournament pits 32 designers against each other to see who truly is the world's greatest living designer.
| Mar 19, 2014
Is it time to start selecting your own clients?
Will 2014 be the year that design firms start selecting the clients they want rather than getting in line with competitors to respond to RFPs? That’s the question posed by a recent thought-provoking article.