engineering

P. S. Ayyaswamy

P. S. Ayyaswamy is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand P. S. Ayyaswamy rather than just read about it. In short: Portonovo S. Ayyaswamy (born March 21, 1942) is an Indian-born-American mechanical engineer, the Asa Whitney Professor of Dynamical Engineering at the University of Pennsylvania, Philadelphia, USA, and inventor.

Key takeaways

P. S. Ayyaswamy belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect P. S. Ayyaswamy to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of P. S. Ayyaswamy from memory before moving on to harder problems.

Reference excerpt

Portonovo S. Ayyaswamy (born March 21, 1942) is an Indian-born-American mechanical engineer, the Asa Whitney Professor of Dynamical Engineering at the University of Pennsylvania, Philadelphia, USA, and inventor. He is known for his work on phase-change heat/mass transfer with droplets and bubbles, multi-phase flows, buoyancy-driven transport, and ionized arc-plasma transport with applications in condensation, combustion, microelectronic packaging, and micro-/macro-biological systems. He is the recipient of the 2014 Max Jakob Memorial Award.

Biography

Youth, education and academic career Ayyaswamy was born in Bangalore, India in 1942, and became a US citizen in 1975. He earned his B.E. in 1962 from University of Mysore, India. Next he obtained his M.S. in 1965, and his M.E. in 1967, both from Columbia University. In 1971 he obtained his PhD in Mechanical Engineering from the University of California, Los Angeles. From 1971 to 1973 he was a post-doctoral scholar at University of California, Los Angeles, where he conducted research on capillary flows in grooved surfaces, large scale safety of nuclear reactors and bounding theories in turbulence. He then joined the faculty of the University of Pennsylvania late 1974 as assistant professor of mechanical engineering, and rose through the ranks and now is the Asa Whitney Professor of Mechanical Engineering.

Awards honours and other activities Ayyaswamy has won many awards for his research. His national and international awards and honors include ASME 2007 Worcester Reed Warner Medal, ASME 2001 Heat Transfer Memorial Award in the Science Category, Council of Indian Organizations Award, ASME Outstanding Faculty Advisor Award, Am. Inst. Aeronautics and Astronautics Aerospace Professional of the Year (1997) award, He was also elected Panelist for Review of NASA Strategic Roadmaps: Space Station Panel (2005), Elected Fellow of ASME (1990) and visiting professor of Dept. of Mech. Eng., University of California, Berkeley, CA (2000). Ayyaswamy has also won several teaching awards which include Lindback Award and Reid Warren Award for Distinguished Teaching.

Selected publications Sadhal, Satwindar; Ayyaswamy, Portonovo S.; Chung, Jacob N. (October 25, 1996). Transport Phenomena with Drops and Bubbles. New York Heidelberg: Springer. ISBN 978-0-387-94678-8. Articles, a selection Ayyaswamy, P. S.; Catton, I.; Edwards, D. K. (June 1, 1974). "Capillary Flow in Triangular Grooves". Journal of Applied Mechanics. 41 (2): 332–336. Bibcode:1974JAM....41..332A. doi:10.1115/1.3423288. ISSN 0021-8936. Catton, Ivan; Ayyaswamy, P.S.; Clever, R.M. (1974). "Natural convection flow in a finite, rectangular slot arbitrarily oriented with respect to the gravity vector". International Journal of Heat and Mass Transfer. 17 (2): 173–184. Bibcode:1974IJHMT..17..173C. doi:10.1016/0017-9310(74)90079-9. Baish, J. W.; Ayyaswamy, P. S.; Foster, K. R. (November 1, 1986). "Heat Transport Mechanisms in Vascular Tissues: A Model Comparison". Journal of Biomechanical Engineering. 108 (4): 324–331. doi:10.1115/1.3138623. ISSN 0148-0731. PMID 3795877. Qiu, Qing-Qing; Ducheyne, Paul; Ayyaswamy, Portonovo S. (1999). "Fabrication, characterization and evaluation of bioceramic hollow microspheres used as microcarriers for 3-D bone tissue formation in rotating bioreactors". Biomaterials. 20 (11): 989–1001. doi:10.1016/S0142-9612(98)00183-5. PMID 10378799. Patents Ducheyne, Paul, Portonovo S. Ayyaswamy, and Qing-Qing Qiu. "Bioactive, degradable composite for tissue engineering." U.S. Patent No. 6,328,990. Dec. 11, 2001. Radin, S., Ducheyne, P., Falaize, S., & Ayyaswamy, P. S. "Hollow bone mineral-like calcium phosphate particles." U.S. Patent No. 6,416,774. Dec. 11, 2001.

References

External links Portonovo S. Ayyaswamy - Penn Engineering

Illustrations

Worked examples

Example 1 — a first encounter with P. S. Ayyaswamy

Start with the simplest possible case. Write down what P. S. Ayyaswamy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to P. S. Ayyaswamy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about P. S. Ayyaswamy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of P. S. Ayyaswamy

In research: P. S. Ayyaswamy appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses P. S. Ayyaswamy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: P. S. Ayyaswamy is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1942 births, American academics of Indian descent, American mechanical engineers, so understanding it makes those chapters shorter.
In everyday life: Look for P. S. Ayyaswamy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study P. S. Ayyaswamy in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what P. S. Ayyaswamy means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain P. S. Ayyaswamy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is P. S. Ayyaswamy in simple terms?

Why does P. S. Ayyaswamy matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study P. S. Ayyaswamy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on P. S. Ayyaswamy.