astronomy

Jurjen Battjes

Jurjen Battjes is a astronomy 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 Jurjen Battjes rather than just read about it. In short: Jurjen Anno Battjes (born 22 February 1939) is a Dutch civil engineer. He was a professor of fluid dynamics at Delft University of Technology until his retirement in 2004.

Key takeaways

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

Reference excerpt

Jurjen Anno Battjes (born 22 February 1939) is a Dutch civil engineer. He was a professor of fluid dynamics at Delft University of Technology until his retirement in 2004. Battjes was elected an international member of the National Academy of Engineering in 2009 for international leadership, research, and teaching in coastal engineering and storm protection.

Career Battjes was born on 22 February 1939 in Winschoten. He studied civil engineering at Delft University of Technology, earning his M.Sc in 1962. Battjes subsequently spent four years as an assistant professor at the Laboratory of Coastal Engineering at the University of Florida, in the United States. He started working as a professor at Delft University of Technology in the late 1960s, where he held the chair of fluid dynamics. In 1974 Battjes obtained his Doctor title in technical sciences at Delft University under Johan Schönfeld, with a thesis titled Computation of Set-up, Longshore Currents, Run-up and Overtopping due to Wind-generated Waves. Battjes retired in 2004. In October 2005 Battjes was hired to help analyse the causes of the 2005 levee failures in Greater New Orleans that were caused by Hurricane Katrina. Battjes was member of the External Review Panel, charged with checking the work of the taskforce investigating the functioning of levees in Greater New Orleans. He was the only non-American on this panel. Battjes became a member of the Royal Netherlands Academy of Arts and Sciences in 1975. In 1990, he won the International Coastal Engineering Award of the American Society of Civil Engineers. In 2009, Battjes was elected as a foreign member of the United States National Academy of Engineering in the section of civil engineering. His book Unsteady flows in open channels, co-authored with Robert Jan Labeur, was selected as one of the "outstanding academic titles 2017" by Choice magazine.

Works Battjes, J.A.; Labeur, R.J. (2017). Unsteady flow in open channels. Cambridge University Press. doi:10.1017/9781316576878. ISBN 978-1-107-15029-4. Battjes, J.A. (2002). "Een reus in de waterbouwkunde, biografie van prof. dr.ir. J.Th. Thijsse". Delfts Goud, leven en werken van achttien markante hoogleraren. Delft.{{cite book}}: CS1 maint: location missing publisher (link)

References

External links Profile at Mathematics Genealogy Project The TU Delft research output system Pure provides an extensive overview of all publications of Battjes

Illustrations

Worked examples

Example 1 — a first encounter with Jurjen Battjes

Start with the simplest possible case. Write down what Jurjen Battjes claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Jurjen Battjes 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 Jurjen Battjes 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 Jurjen Battjes

In research: Jurjen Battjes appears in astronomy 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 Jurjen Battjes 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: Jurjen Battjes is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1939 births, Academic staff of the Delft University of Technology, Delft University of Technology alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Jurjen Battjes 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 Jurjen Battjes in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jurjen Battjes 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 Jurjen Battjes out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jurjen Battjes in simple terms?

Jurjen Anno Battjes (born 22 February 1939) is a Dutch civil engineer. He was a professor of fluid dynamics at Delft University of Technology until his retirement in 2004.

Why does Jurjen Battjes matter?

Because it connects several astronomy 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 Jurjen Battjes?

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 Jurjen Battjes.