Navigation Links
New model reveals how huddling penguins share heat fairly
Date:11/16/2012

San Diego, Calif., Nov. 16 Penguins that face the bitter cold and icy winds of Antarctica often huddle together in large groups for warmth during storms. Mathematicians at the University of California, Merced created a model of penguin huddles that assumes each penguin aims solely to minimize its own heat loss. Surprisingly, the model reveals that such self-centered behavior results in an equitable sharing of heat. The results are published in the online journal PLOS ONE and the researchers will discuss their findings at the annual meeting of the American Physical Society's (APS) Division of Fluid Dynamics (DFD), held Nov. 18 20 in San Diego, Calif.

Penguins aren't a typical study subject for Francois Blanchette, an applied mathematician at UC Merced who focuses on fluid dynamics. However, after seeing penguin huddles in the movie "The March of the Penguins" Blanchette realized that the important factors that shaped the huddle, including wind and heat flow, fell within his area of expertise.

Blanchette and his fellow researchers, Arnold Kim and Aaron Waters, modeled huddles packed so tightly that only the penguins on the outside could move. Each penguin in the huddle generated heat that the wind blew away. By considering such factors as the number of penguins in the huddle and the strength and turbulence of the wind, the model calculated which penguin on the outside of the huddle was coldest. The coldest penguin moved to the most sheltered spot available, usually relocating from a windward to a leeward position, and then the heat distribution around the huddle was recalculated. Repeated iterations showed the huddle gradually elongating and creeping downwind over time.

At first the model assumed perfectly steady wind patterns and identical penguins, but produced huddle shapes that were longer and thinner than those observed in nature. When the researchers added uncertainty, which could represent irregular wind eddies and na
'/>"/>

Contact: Charles Blue
dfdmedia@aps.org
301-209-3088
American Institute of Physics
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Neurons made from stem cells drive brain activity after transplantation in laboratory model
2. New health-economic model shows benefits of boosting dietary calcium intake
3. Cells from skin create model of blinding eye disease
4. Reducing radiation: Heart Institute model shows hope for new standards worldwide
5. Oxidative stress and altered gene expression occurs in a metabolic liver disease model
6. National Heart Centre Singapore develops worlds first human heart cell model
7. New model could help fill data gap in predicting historical air pollution exposure
8. Research finds heart remodeling rapidly follows cardiac injury
9. Coral scientists use new model to find where corals are most likely to survive climate change
10. Early menopause: A genetic mouse model of human primary ovarian insufficiency
11. Controlling gene expression: How chromatin remodelers block a histone pass
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... tiny strands of nucleic acid that contain instructions for ... data, our DNA is copied into RNA molecules, which ... in our cells. , Several years ago, scientists ... other known RNAs, this molecule is circular, and was ... has been known about how they are produced. Moreover, ...
(Date:9/18/2014)... across racial and ethnic groups describe losing eyesight ... day-to-day life, more so than other conditions including: ... of African-Americans, 49% of non-Hispanic whites, 43% of ... disease or ailment is the worst that could ... followed by AIDS/HIV. Hispanics and Asians ranked ...
(Date:9/18/2014)... algal forests in the eastern Mediterranean Sea pose a ... distribution continues to expand as the climate warms, a ... of researchers led by Dr Adriana Vergs of UNSW ... for Advanced Studies in Spain, is published in the ... surveyed more than 1000 kilometres of coastline in Turkey ...
Breaking Biology News(10 mins):Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 2Americans rate losing eyesight as having greatest impact on their lives 2Americans rate losing eyesight as having greatest impact on their lives 3Tropical fish a threat to Mediterranean Sea ecosystems 2
... in the Pacific Ocean as the likely culprit for ... to rivers and streams along the West Coast of ... Northwest and Southwest Fisheries Science Centers are comparing data ... in 2005 that occurred when this years returning salmon ...
... TEMPE, Ariz. Taxonomy, the science responsible for species ... decades a disregard that a new International Institute ... to change. Our vision is to spark a ... and technologies, says founding director Quentin Wheeler, an entomologist ...
... Throughout the world, amateurs, experts and the media agree ... that the bodys own opioids, so called endorphins, are ... never been proved until now. Researchers at the Technische ... demonstrate the existence of an endorphin driven runners high. ...
Cached Biology News:Unfavorable ocean conditions likely cause of low 2007 salmon returns along West Coast 2Species explorers ask: What's on Your planet? 2Species explorers ask: What's on Your planet? 3The myth of runner's high revisited with brain imaging 2The myth of runner's high revisited with brain imaging 3
(Date:9/19/2014)... -- , The first grants awarded to ... (ESPE) Meeting  Investment supports innovative projects for ... field of growth  , EMD Serono, a ... , today announced the first recipients of the Grant ... announced during a Satellite Symposium organized by EMD Serono ...
(Date:9/18/2014)... About POCT POCT, ... clinical laboratory. It helps in making fast clinical ... medication. POCT is gaining popularity due to the ... as diabetes, heart disease, and obesity. It is ... to minimize errors during the diagnosis of patients. ...
(Date:9/18/2014)... September 18, 2014 ... http://www.researchandmarkets.com/research/czvg3s/biocompatible ) has announced the addition ... Global Strategic Business Report" report ... ,This report analyzes the worldwide markets ... by the following Product Segments: Polymeric ...
(Date:9/18/2014)... -- Research and Markets has announced ... Report 2014" report to their offering. ... is a professional and in-depth study on the ... The report provides a basic overview of ... chain structure. The N-acetylcysteine market analysis is provided ...
Breaking Biology Technology:EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3POCT Market in China 2014-2018 2Biocompatible Materials - Global Strategic Business Report 2014 2Biocompatible Materials - Global Strategic Business Report 2014 3Global N-acetylcysteine Industry Report 2014 2
... March 18 In a video interview Mike,Lawrie, CEO ... of Misys Healthcare and Allscripts to create a leader ... business. The,interview and transcript are available now on ... you warrant that you are not,located in the US ...
... - Collaboration leads to major deals in Asia,- Annual revenue to ... Sartorius Stedim Biotech expects significant demand for its products and ... ... France, GOETTINGEN, Germany and MONTREAL, Canada, March 18,/PRNewswire-FirstCall/ - Sartorius Stedim ...
... Professor Nadrian Seeman has received the American Chemical Societys ... of structural DNA nanotechnology. Created in 1902, the Nichols ... chemistry and is given by the societys New York ... Professor of Chemistry at NYU, founded and developed the ...
Cached Biology Technology:ProMetic and Sartorius Stedim Biotech collaborate on technology transfer deals in Asia 2ProMetic and Sartorius Stedim Biotech collaborate on technology transfer deals in Asia 3ProMetic and Sartorius Stedim Biotech collaborate on technology transfer deals in Asia 4
The Programmable MP-5000P-F Power Supply can be applied for any Microfluidic application....
... has a long and outstanding history ... Several years ago we became aware ... was being modified to inject Xenopus ... redesigning the microdispenser to eliminate any ...
...
... designed for sequencing inserts cloned into M13/pUC-based ... T3 RNA polymerase promoters, or lambda gt10 ... a concentration of 0.1 µg/µl in water. ... sequencing reactions using SequiTherm™ EXCEL™ II DNA ...
Biology Products: