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
| Jun 19, 2014
First look: JDS Architects' roller-coaster-like design for Istanbul waterfront development
The development's wavy and groovy design promises unobstructed views of the Marmara Sea for every unit.
| Jun 19, 2014
NCARB study: Architects getting licensed at younger age
A new report from NCARB shows that the median age of people at initial licensure is at a 10 year low.
| Jun 19, 2014
Singapore's 'Tree House' vertical gardens break Guinness World Record
The high-rise development will have a 24,638-sf vertical garden, breaking a Guinness World Record.
| Jun 18, 2014
Design tips for Alzheimer care facilities
A new white paper from the Alzheimer’s Foundation of America and Perkins Eastman details best design practices for residential care settings for individuals living with Alzheimer’s disease.
| Jun 18, 2014
BSB Design Reinforces Client-Focus Legacy With Recent Changes
His 26-plus year history with BSB Design paired with his client relations skills and operational and organizational acumen make Swift well-suited to perpetuate the legacy of founder Jack Bloodgood: That everyone deserves to live in a home designed by an architect.
| Jun 18, 2014
Largest Passive House structure in the U.S. to be built in Oregon
Orchards at Orenco, a 57-unit affordable housing complex in Hillsboro, Oregon, is the first of a three-phase, three-building complex.
| Jun 18, 2014
SOM's twisting tower wins design competition for Sweden's tallest skyscraper
The skyscraper, which will reach 230 meters and is named Polstjärnan, or "The Pole Star," is to be built in Gothenburg, Sweden.
| Jun 18, 2014
Study shows walkable urbanism has positive economic impact
Walkable communities have a higher GDP, greater wealth, and higher percentages of college grads, according to a new study by George Washington University.
| Jun 18, 2014
Ware Malcomb names Sorensen Engineering Regional Manager
New hire will oversee firm's civil engineering practice in Los Angeles, San Diego, and Irvine.
| Jun 18, 2014
JLG Architects hires 31 to keep up with 'shale gale' work
Construction boom fueled by 'shale gale' brings rapid growth to North Dakota firm.