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
Reconstruction & Renovation | Dec 21, 2017
Interactive map includes detailed information on historic New York City buildings
The New York City Landmarks Preservation Commission launched a new, enhanced version of its interactive map, Discover NYC Landmarks.
High-rise Construction | Dec 20, 2017
Another record year for high-rise construction
More than 140 skyscrapers were completed across the globe this year, including 15 supertall towers.
Game Changers | Dec 20, 2017
Urban farms can help plant seeds for cities’ growth around them
Urban farms have been impacting cities’ agribusiness—and, on some cases, their redevelopment—for decades.
Market Data | Dec 20, 2017
Architecture billings upturn shows broad strength
The American Institute of Architects (AIA) reported the November ABI score was 55.0, up from a score of 51.7 in the previous month.
Public Health Labs | Dec 19, 2017
10 takeaways from SmithGroup’s ‘lab of the future’ initiative
The LAB2050 initiative digs into the scientific trends, technologies, and economics that will shape tomorrow’s research laboratory environments.
Office Buildings | Dec 19, 2017
How do we measure human performance, and what does it mean for the workplace?
There are many new tools and methods that are beginning to look more comprehensively to evaluate organizational well-being.
Sports and Recreational Facilities | Dec 18, 2017
Canada’s newest funicular makes Edmonton’s largest green space more accessible
The incline elevator is located in downtown Edmonton and was publicly funded.
Sponsored | Building Team | Dec 12, 2017
3 tips to address the top causes of budget overruns
The most cited issues are communication breakdowns, inadequate fees for the work provided, and unrealistic deadlines or schedules.
Multifamily Housing | Dec 12, 2017
Call for technical experts: Dog wash station design
The editors of Multifamily Design + Construction magazine need your expertise.
Government Buildings | Dec 11, 2017
Is this the world’s most humane prison?
The C.F. Møller-designed prison’s architecture supports the inmates’ and staff’s mental and physical well-being.
