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
Education Facilities | Mar 15, 2023
DLR Group’s Campus Planning Studio defines new leadership
Linsey Graff named Campus Planning Leader. Krisan Osterby transitions to Senior Planner.
Building Tech | Mar 14, 2023
Reaping the benefits of offsite construction, with ICC's Ryan Colker
Ryan Colker, VP of Innovation at the International Code Council, discusses how municipal regulations and inspections are keeping up with the expansion of off-site manufacturing for commercial construction. Colker speaks with BD+C's John Caulfield.
Multifamily Housing | Mar 14, 2023
Multifamily housing rent rates remain flat in February 2023
Multifamily housing asking rents remained the same for a second straight month in February 2023, at a national average rate of $1,702, according to the new National Multifamily Report from Yardi Matrix. As the economy continues to adjust in the post-pandemic period, year-over-year growth continued its ongoing decline.
Affordable Housing | Mar 14, 2023
3 affordable housing projects that overcame building obstacles
These three developments faced certain obstacles during their building processes—from surrounding noise suppression to construction methodology.
Healthcare Facilities | Mar 13, 2023
Next-gen behavioral health facilities use design innovation as part of the treatment
An exponential increase in mental illness incidences triggers new behavioral health facilities whose design is part of the treatment.
Student Housing | Mar 13, 2023
University of Oklahoma, Missouri S&T add storm-safe spaces in student housing buildings for tornado protection
More universities are incorporating reinforced rooms in student housing designs to provide an extra layer of protection for students. Storm shelters have been included in recent KWK Architects-designed university projects in the Great Plains where there is a high incidence of tornadoes. Projects include Headington and Dunham Residential Colleges at the University of Oklahoma and the University Commons residential complex at Missouri S&T.
Mixed-Use | Mar 11, 2023
Austin mixed-use development will provide two million sf of office, retail, and residential space
In Austin, Texas, the seven-building East Riverside Gateway complex will provide a mixed-use community next to the city’s planned Blue Line light rail, which will connect the Austin Bergstrom International Airport with downtown Austin. Planned and designed by Steinberg Hart, the development will include over 2 million sf of office, retail, and residential space, as well as amenities, such as a large park, that are intended to draw tech workers and young families.
Performing Arts Centers | Mar 9, 2023
Two performing arts centers expand New York’s cultural cachet
A performing arts center under construction and the adaptive reuse for another center emphasize flexibility.
Architects | Mar 9, 2023
HLW achieves Just 2.0 label for equity and social justice
Global architecture, design, and planning firm HLW has achieved The International Living Future Institute’s (ILFI) Just 2.0 Label. The label was developed for organizations to evaluate themselves through a social justice and equity lens.
Architects | Mar 9, 2023
A. Eugene (Gene) Kohn, Co-Founder of Kohn Pedersen Fox, dies at 92
A. Eugene (Gene) Kohn, FAIA RIBA JIA, Co-founder of international architecture firm Kohn Pedersen Fox, died today of cancer. He was 92.