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
Healthcare Facilities | Apr 24, 2017
Treating the whole person: Designing modern mental health facilities
Mental health issues no longer carry the stigma that they once did. Awareness campaigns and new research have helped bring our understanding of the brain—and how to design for its heath—into the 21st century.
Architects | Apr 20, 2017
Design as a business strategy: Tapping data is easier than you think
We have been preaching “good design matters” for a long time, demonstrating the connection between the physical environment and employee satisfaction, individual and team performance, and an evolving organizational culture.
Architects | Apr 20, 2017
‘Gateways to Chinatown’ project seeks the creation of a new neighborhood landmark for NYC’s Chinatown
The winning team will have $900,000 to design and implement their proposal.
Architects | Apr 19, 2017
Tour Zaha Hadid, Frank Gehry architecture with Google Earth
Google Earth’s new ‘Voyager’ feature allows people to take interactive guided tours.
Multifamily Housing | Apr 18, 2017
Three multifamily, three specialized housing projects among 14 recipients of the AIA’s 2017 Housing Awards
2017 marks the 17th year the AIA has rewarded projects and architects with the Housing Awards.
Projects | Apr 17, 2017
BD+C's 2017 Design Innovation Report
Façades that would make Dr. Seuss smile, living walls, and exterior wall space that doubles as gallery space are all represented in this year's BD+C Design Innovation Report.
Healthcare Facilities | Apr 13, 2017
The rise of human performance facilities
A new medical facility in Chicago focuses on sustaining its customers’ human performance.
Laboratories | Apr 13, 2017
How to design transformative scientific spaces? Put people first
While most labs are designed to achieve that basic functionality, a transformational lab environment prioritizes a science organization’s most valuable assets: its people.
Hotel Facilities | Apr 12, 2017
Hotels embrace place
Today’s hospitality environments emphasize unique, localized experiences to attract and engage guests.