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
Giants 400 | Oct 30, 2017
Top 130 green architecture firms
Gensler, Stantec, and HOK top BD+C’s ranking of the nation’s largest green sector architecture and AE firms, as reported in the 2017 Giants 300 Report.
Architects | Oct 30, 2017
City 2050: What will your city look like in 2050?
What do we think the future will look like 30 years or so from now? And what will City: 2050 be like?
Architects | Oct 25, 2017
Mason & Hanger appoints Ben Lilly as its new president
The firm expects to continue mining growth opportunities with its federal agency clients.
Healthcare Facilities | Oct 25, 2017
Creating child-friendly healthcare spaces: Five goals for success
Children often accompany parents or grandparents in medical settings; what can we do to address their unique needs?
Giants 400 | Oct 24, 2017
Top 160 reconstruction architecture firms
Gensler, Jacobs, and Stantec top BD+C’s ranking of the nation’s largest reconstruction sector architecture and AE firms, as reported in the 2017 Giants 300 Report.
Giants 400 | Oct 20, 2017
Top 40 sports architecture firms
Populous, HOK, and HKS top BD+C’s ranking of the nation’s largest sports sector architecture and AE firms, as reported in the 2017 Giants 300 Report.
Giants 400 | Oct 19, 2017
Race for talent drives office designs
Is the shift toward attracting younger workers too much or not enough?
Sponsored | Designers | Oct 18, 2017
Universal design principles: Part 2
The CDC targets the bathroom as the most dangerous room in the house. Architects can use principles of Universal Design (UD) to reduce these hazards.
Giants 400 | Oct 17, 2017
Top 110 office architecture firms
Gensler, Jacobs, and HOK top BD+C’s ranking of the nation’s largest office sector architecture and AE firms, as reported in the 2017 Giants 300 Report.
Giants 400 | Oct 16, 2017
Data center market forecast: Clearly cloudy
Look for mission-critical construction to double in the next few years.