|Occupation||Professor of mechanical engineering at the Duke University|
|Known for||Mechanical engineering, discovery of the constructal law of design in nature|
Adrian Bejan is an American professor and discoverer of the constructal law of design and evolution in nature. He is J. A. Jones Distinguished Professor of Mechanical Engineering at Duke University.
Adrian Bejan was born in Galaţi, a port town located on the Danube in Romania. His mother, Marioara Bejan (1914–1998), was a pharmacist. His father, Dr. Anghel Bejan (1910–1976), was a veterinarian. Adrian Bejan showed an early talent in drawing, and his parents enrolled him in art school. He also excelled in basketball, which earned him a position on the Romanian national basketball team. As a member of that team he traveled to Bulgaria and Hungary. At age 20 he participated in a math competition. The top six finalists were awarded an application form for an American university. Adrian Bejan was allowed to apply for admission to the Massachusetts Institute of Technology. He was accepted in December 1968 and was allowed to leave for the US in February 1969  at a time when travel was severely restricted by the communist government of Romania.
Adrian Bejan received all his degrees from MIT: BS 1971 (Honors Course), MS 1972 (Honors Course), and PhD in 1975, all from the Department of Mechanical Engineering at MIT.
Adrian Bejan was appointed full professor with tenure at Duke University in 1984. He was awarded the J.A. Jones distinguished professorship in 1989.
Adrian Bejan has published 560 peer-reviewed articles and 25 books. He pioneered numerous original methods in science, such as the constructal law of design and evolution in nature , entropy generation minimization, scale analysis of convection, heatlines and masslines, transition to turbulence, and designed porous media.
He was awarded 16 doctorates Honoris Causa from universities in 11 countries.
In 2002, he was listed by ISI among the top 100 Highly Cited in all Engineering.
- Bejan number (Be), proposed as name for the dimensionless ratio of fluid friction irreversibility divided by heat transfer irreversibility, in convection (S. Paoletti, F. Rispoli and E. Sciubba, Calculation of exergetic losses in compact heat exchanger passages, ASME AES-Vol. 10-2, 1989, pp. 21–29);
- Bejan number (Be), proposed as name for the dimensionless group ΔP·L2 / (μα) in forced convection, electronic cooling, contact melting, and second law analysis of heat transfer;
- Bejan number (Be), proposed as name for the dimensionless group ΔP·L2 / (μD) in mass transfer.
- Bejan number (Be), proposed as name for the dimensionless group ΔP·L2 / (ρν2) in fluid mechanics.
- Bejan number (Be), proposed as name for the dimensionless group ΔP·L2 / (ρα2) in forced convection, electronic cooling, contact melting, and second law analysis of heat transfer;
- Bejan number (Be), proposed as name for the dimensionless group ΔP·L2 / (ρD2) in mass transfer.
- Adrian Bejan's web page on the Duke University site
- How a Single Principle of Physics Governs Nature and Society: Adrian Bejan at TEDxMidAtlantic 2012
- Interview on The State of Things at WUNC.org
- TEDxBucharest 2010 Talk Lecture
- Constructal Law web portal: publications, events, links, etc.
- Unified Physics Theory Explains Animals' Running, Flying And Swimming: Duke University article.
- Tree branching key to efficient flow in nature and novel materials, 
- Unifying The Animate And Inanimate Designs of Nature, 
- Why the golden ratio pleases the eye, The Guardian, UK, 
- Le secret de la beaute demystifiee, Le Devoir, Montreal, 
- Collaboration of soloists makes the best science, 
- Duke Mechanical Engineering Faculty, Adrian Bejan's page.
- Bejan, Adrian (1998). "Questions in Fluid Mechanics: Natural Tree-Shaped Flows". Journal of fluids engineering 120: 429.
- Bejan, Adrian; Zane, J. Peder (2012). Design in Nature. How the Constructal Law Governs Evolution in Biology, Physics, Technology, and Social Organization. Double Day. ISBN 978-0-385-53461-1.
- "Meet Adrian Bejan". North Carolina Public Radio. Monday, 16 August 2010. Retrieved 5 August 2012.
- Adrian Bejan's ISI page
- A. Bejan and S. Lorente, The constructal law and the thermodynamics of flow systems with configuration, Int. J. Heat Mass Transfer, 47, 2004, pp. 3203–3214. doi:10.1016/j.ijheatmasstransfer.2004.02.007.
- A. Bejan and S. Lorente, Constructal theory of generation of configuration in nature and engineering, J. Appl. Phys., 100, 2006, 041301. doi:10.1063/1.2221896.
- A. H. Reis, Constructal theory: from engineering to physics, and how flow systems develop shape and structure, Appl. Mech. Rev., 59, 2006, pp. 269–281. doi:10.1115/1.2204075.
- A. Bejan and S. Lorente, The constructal law of design and evolution in nature, Philosophical Transactions of the Royal Society B, 365, 2010, pp. 1335–1347.
- A. Bejan and S. Lorente, The Constructal law and the evolution of design in nature, Physics of Life Reviews, 8, 2011, pp. 209–240.
- A. Bejan, Advanced Engineering Thermodynamics, 3rd ed., Wiley, Hoboken, 2006.
- A. Bejan, Convection Heat Transfer, 4th ed., Wiley, Hoboken, 2013.
- D.A. Nield, A. Bejan, Convection in Porous Media, 4th ed., Springer, New York, 2013.