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
Architects | Feb 7, 2018
8 inefficiencies in the architecture + design industry (and possible solutions)
Matthew Rosenberg has identified 8 major inefficiencies in the architecture and design industry, as well as a solution for each of them.
Architects | Feb 5, 2018
Little names new Corporate President and COO
International architecture and design firm Little has appointed Carolyn Rickard-Brideau as its new Corporate President, and Charles Todd as its Chief Operating Officer.
Architects | Feb 1, 2018
How to generate architecture leads
One of the first steps to increasing leads for your design firm is to acknowledge that all leads are not equal, writes Hinge’s Karl Feldman.
Healthcare Facilities | Feb 1, 2018
Early supplier engagement provides exceptional project outcomes
Efficient supply chains enable companies to be more competitive in the marketplace.
Industry Research | Jan 30, 2018
AIA’s Kermit Baker: Five signs of an impending upturn in construction spending
Tax reform implications and rebuilding from natural disasters are among the reasons AIA’s Chief Economist is optimistic for 2018 and 2019.
Market Data | Jan 30, 2018
AIA Consensus Forecast: 4.0% growth for nonresidential construction spending in 2018
The commercial office and retail sectors will lead the way in 2018, with a strong bounce back for education and healthcare.
Architects | Jan 29, 2018
14 marketing resolutions AEC firms should make in 2018
As we close out the first month of the New Year, AEC firms have made (and are still making) plans for where and how to spend their marketing time and budgets in 2018.
Education Facilities | Jan 29, 2018
My day as a kindergartner
The idea of a kindergarten-only school presents both challenges and opportunities in regards to the design.
AEC Tech | Jan 29, 2018
thyssenkrupp tests self-driving robot for ‘last mile’ delivery of elevator parts
“With driverless delivery robots, we could fill a gap and get spare parts from our warehouses to the jobsite faster,” said thyssenkrupp SVP Ivo Siebers.
Architects | Jan 26, 2018
Stephen Ayers, FAIA, honored with the 2018 AIA Thomas Jefferson Award
The award honors significant contributions to public architecture.