Why do elephants have big ear flaps? (original) (raw)

Abstract

In this essay we shall try to answer the question in the title with some geometry and heat transfer thrown in for effect. For doing so, as the joke goes, allow me to assume the elephant as a sphere. The reason will be apparent soon.

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Introduction

Chapter © 2015

Suggested Reading

  1. P K Phillips, and J E Heath, Heat exchange by the pinna of the african elephant (Loxodonta africana), Comparative Biochemistry and Physiology Part A: Physiology, Vol.101, pp.693–699, 1992.
    Google Scholar
  2. A A Kinahan, S L Pimm, and R J van Aarde, Ambient temperature as a determinant of landscape use in the savanna elephant, Loxodonta africana, Journal of Thermal Biology, Vol. 32, No.1, pp.47–58, January 2007.
    Article Google Scholar
  3. P G Wright, Why do elephants flap their ears?, S. Afr. J. Zool., Vol.19, pp.266–269, 1984.
    Google Scholar
  4. F S Mohler, Oscillating heat flow from the pinna of the ear of the rabbit (Oryctolagus cuniculus), PhD thesis, University of Illinois, 1987.
  5. A Bejan, Convection Heat Transfer, 3rd edition, John Wily & Sons, NY, 2003.
    Google Scholar
  6. P K Phillips, and J E Heath, Dependency of surface temperature regulation on body size in terrestrial mammals, Journal of Thermal Biology, Vol.20, No.3, pp.281–289, June 1995.
    Article Google Scholar
  7. P K Phillips and J E Heath, Heat loss in Dumbo: a theoretical approach, Journal of Thermal Biology, Vol.26, No.2, pp.117–12, April 2001.
    Article Google Scholar
  8. C Lavers, Why Elephants have Big Ears, St. Martin’s Griffin Reprint ed., 2002.

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Authors and Affiliations

  1. Heat Transfer and Thermal Power Laboratory Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, TN, 600036, India
    Arunn Narasimhan

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  1. Arunn Narasimhan
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Correspondence toArunn Narasimhan.

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Arunn Narasimhan is a faculty at the Indian Institute of Technology Madras. His research interests include transport in porous media, phase change materials and heat transfer in biological systems.

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Narasimhan, A. Why do elephants have big ear flaps?.Reson 13, 638–647 (2008). https://doi.org/10.1007/s12045-008-0070-5

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