Abstract Coloring Pages
Abstract Coloring Pages
An abstract is a short summary of a paper or essay that tells the reader the main points of the essay so they don’t have to read the whole thing to know what it’s about. Most, if not all, professional research papers will come with an abstract.
The hydrodynamics of dolphin drafting
by Daniel Weihs, Faculty of Aerospace Engineering, Technion, Israel Institute of Technology, Haifa 32000, Israel.
Abstract:
Background Drafting in cetaceans is defined as the transfer of forces between individuals without actual physical contact between them. This behavior has long been surmised to explain how young dolphin calves keep up with their rapidly moving mothers. It has recently been observed that a significant number of calves become permanently separated from their mothers during chases by tuna vessels. A study of the hydrodynamics of drafting, initiated in the hope of understanding the mechanisms causing the separation of mothers and calves during fishing-related activities, is reported here.
Results Quantitative results are shown for the forces and moments around a pair of unequally sized dolphin-like slender bodies. These include two major effects. First, the so-called Bernoulli suction, which stems from the fact that the local pressure drops in areas of high speed, results in an attractive force between mother and calf. Second is the displacement effect, in which the motion of the mother causes the water in front to move forwards and radially outwards, and water behind the body to move forwards to replace the animal’s mass. Thus, the calf can gain a ‘free ride’ in the forward-moving areas. Utilizing these effects, the neonate can gain up to 90% of the thrust needed to move alongside the mother at speeds of up to 2.4 m/s. A comparison with observations of eastern spinner dolphins (Stenella longirostris) is presented, showing savings of up to 60% in the thrust that calves require if they are to keep up with their mothers.
Conclusions A theoretical analysis, backed by observations of free-swimming dolphin schools, indicates that hydrodynamic interactions with mothers play an important role in enabling dolphin calves to keep up with rapidly moving adult school members.
abstract color, abstract coloring pages, abstract disney, abstract princess, abstract print, coloring drawing, coloring drawings, coloring preschool, image coloring, islamic coloring, paint coloring, picture coloring, printable colouring pages
Related posts:
- mothers day cards to print color mothers day coloring paages Mother’s Day is a day...
- dolphins coloring pagesdolphins coloring pages Dolphins are mammals of the order Cetacea,...
- Cattle (Cow) Coloring PagesCattle (Cow) Coloring Pages Cattle, colloquially referred to as cows,...
Related posts brought to you by Yet Another Related Posts Plugin.