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
Transportation & Parking Facilities | Nov 13, 2020
BIG and Kilo-designed Pegasus Pod transports first Hyperloop passengers
The pod achieves Hyperloop travel at speeds over 1000km/hour.
Government Buildings | Nov 13, 2020
Tax shortfalls nip government projects in the bud
Federal contracts are proceeding, but states and cities are delaying, deferring, and looking for private investment.
AEC Tech | Nov 12, 2020
The Weekly show: Nvidia's Omniverse, AI for construction scheduling, COVID-19 signage
BD+C editors speak with experts from ALICE Technologies, Build Group, Hastings Architecture, Nvidia, and Woods Bagot on the November 12 episode of "The Weekly." The episode is available for viewing on demand.
Museums | Nov 5, 2020
The Weekly show: Designing cannabis facilities, Bob Borson's Life of an Architect, museum design
BD+C editors speak with experts from Cooper Robertson, Life of an Architect, and MJ12 Design Studio on the November 5 episode of "The Weekly." The episode is available for viewing on demand.
Multifamily Housing | Oct 30, 2020
The Weekly show: Multifamily security tips, the state of construction industry research, and AGC's market update
BD+C editors speak with experts from AGC, Charles Pankow Foundation, and Silva Consultants on the October 29 episode of "The Weekly." The episode is available for viewing on demand.
AEC Tech | Oct 28, 2020
Meet Jaibot, Hilti's new construction robot
The semi-autonomous robot is designed to assist MEP contractors with ceiling-drilling applications.
Hotel Facilities | Oct 27, 2020
Hotel construction pipeline dips 7% in Q3 2020
Hospitality developers continue to closely monitor the impact the coronavirus will have on travel demand, according to Lodging Econometrics.
Data Centers | Oct 26, 2020
Speed to market is biggest obstacle for burgeoning data center construction sector
Hyperscale and edge computing are driving growth in data center and mission critical facilities construction.
Adaptive Reuse | Oct 26, 2020
Mall property redevelopments could result in dramatic property value drops
Retail conversions to fulfillment centers, apartments, schools, or medical offices could cut values 60% to 90%.
Multifamily Housing | Oct 15, 2020
L.A., all the way
KFA Architecture has hitched its wagon to Los Angeles’s star for more than 40 years.