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
| May 27, 2014
Fire Rated Glass contributes to open lab environment at JSNN
Openness and transparency were high priorities in the design of the Joint School of Nanoscience & Nanoengineering within the Gateway University Research Park in Greensboro, N.C. Because the facility’s nanobioelectronics clean room houses potentially explosive materials, it needed to be able to contain flames, heat, and smoke in the event of a fire. SPONSORED CONTENT
| May 27, 2014
What are your services worth?
The price, cost, and value of design services are explored in a recent Design Intelligence article authored by Scott Simpson, a senior fellow of the Design Futures Council. Value, he explains, represents the difference between “price” and “cost.” SPONSORED CONTENT
| May 27, 2014
Contractors survey reveals improving construction market
The construction industry is on the road to recovery, according to a new survey by Metal Construction News. Most metrics improved from the previous year’s survey, including a 19.4% increase in the average annual gross contracting sales volume. SPONSORED CONTENT
| May 27, 2014
How to develop a dynamic referral system
Compelling your clients to provide you with quality referrals is one of the best ways to build a successful business. Here are ways to ‘train’ your clients to make quality referrals. SPONSORED CONTENT
Sponsored | | May 27, 2014
Grim Hall opens the door to fire safety with fire-rated ceramic glass
For the renovation of Lincoln University’s Grim Hall life sciences building into a state-of-the-art computer facility, Tevebaugh Associates worked to provide students and faculty with improved life safety protection. Updating the 1925-era facility's fire-rated doors was an important component of the project.
| May 26, 2014
New Jersey data centers will manage loads with pods
The two data center facilities totaling almost 430,000 sf for owner Digital Realty Trust will use the company's TK-Flex planning module, allowing for 24 pods.
| May 23, 2014
Big design, small package: AIA Chicago names 2014 Small Project Awards winners
Winning projects include an events center for Mies van der Rohe's landmark Farnsworth House and a new boathouse along the Chicago river.
| May 23, 2014
Top interior design trends: Gensler, HOK, FXFOWLE, Mancini Duffy weigh in
Tech-friendly furniture, “live walls,” sit-stand desks, and circadian lighting are among the emerging trends identified by leading interior designers.
| May 22, 2014
How to measure what matters
Measuring what matters is essential for professional services firms, says author and consultant Tim Williams, particularly as firms continue to experiment with the concept of outcome-based compensation agreements.
| May 22, 2014
BIM-driven prototype turns data centers into a kit of parts
Data center design specialist SPARCH creates a modular scheme for solutions provider Digital Realty.