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 | Apr 2, 2021
Spring Has Sprung at Construction Specialties
Introducing a slew of sensational solids, metallic finishes that cast subtle and shimmering effects, and disposable curtains to complement our exclusive fabric line.
Multifamily Housing | Mar 30, 2021
Bipartisan ‘YIMBY’ bill would provide $1.5B in grants to spur new housing
Resources for local leaders to overcome obstacles such as density-unfriendly or discriminatory zoning.
Office Buildings | Mar 26, 2021
Finding success for downtown office space after COVID-19
Using the right planning tools can spur new uses for Class B and C commercial real estate.
Architects | Mar 25, 2021
The Weekly Show, March 25, 2021: The Just Label for AEC firms, and Perkins Eastman's Well-Platinum design studio
This week on The Weekly show, BD+C editors speak with AEC industry leaders about the Just Label from the International Living Future Institute, and the features and amenities at Perkins Eastman's Well Platinum-certified design studio.
Architects | Mar 23, 2021
Design firms KTGY, Simeone Deary Design Group unite to shape future of architectural design through experiential environments
With a bold vision to reshape how people experience spaces, residential design firm joins forces with interior design group, creating fully integrated architecture, branding, interiors and planning practice.
Architects | Mar 15, 2021
A life in architecture – Lessons from my father
A veteran designer looks back on the lessons his father, a contractor, taught him.
Architects | Mar 11, 2021
Calling all building design professionals: BD+C needs your expertise on design innovation in 2021
This new BD+C research project explores the leading drivers, sources of inspiration, and successful outcomes for design innovation projects and initiatives.
Coronavirus | Mar 11, 2021
The Weekly show, March 11, 2021: 5 building products for COVID-related conditions, and AI for MEP design
This week on The Weekly show, BD+C editors speak with AEC industry leaders about building products and systems that support COVID-related conditions, and an AI tool that automates the design of MEP systems.
Laboratories | Mar 10, 2021
8 tips for converting office space to life sciences labs
Creating a successful life sciences facility within the shell of a former office building can be much like that old “square peg round hole” paradigm. Two experts offer important advice.