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For a streamlined body to achieve a low drag coefficient, the boundary layer around the body must remain attached to the surface of the body for as long as possible, causing the wake to be narrow. A high form drag results in a broad wake. The boundary layer will transition from laminar to turbulent if Reynolds number of the flow around the body ...
A body is known as bluff or blunt when the source of drag is dominated by pressure forces, and streamlined if the drag is dominated by viscous forces. For example, road vehicles are bluff bodies. [ 9 ]
The history of the Hour Record may be divided into three categories: UCI Hour Records, Recumbents Hour Records and Streamlined Human Powered Vehicle Records. Since 1914 it was well known that a bicycle inside of a streamlined shape such as body made of metal or later composite materials, can be significantly faster than an ordinary bicycle due ...
In general, mammals have hearts about 0.6% of their total body mass: =, where M is the body mass of the individual. [41] Lung volume is also directly related to body mass in mammals (slope = 1.02). The lung has a volume of 63 ml for every kg of body mass, with the tidal volume at rest being 1/10 the lung volume.
The collision causes drag against moving fish, which is why many fish are streamlined in shape. Streamlined shapes work to reduce drag by orienting elongated objects parallel to the force of drag, therefore allowing the current to pass over and taper off the end of the fish. This streamlined shape allows for more efficient use of energy locomotion.
Fusiform (from Latin fusus ‘spindle’) means having a spindle-like shape that is wide in the middle and tapers at both ends.It is similar to the lemon-shape, but often implies a focal broadening of a structure that continues from one or both ends, such as an aneurysm on a blood vessel.
The rate of heat loss from the human body is a function of subcutaneous fat thickness, but metabolic heat production is not accurately predictable, which is a limitation on predicting the lowest water temperature in which a stable thermal balance can be reached, with or without a given external insulation.
It was developed in the late 1990s and is the fastest non-motorized sport on Earth. The speed, achieved by the human body in free fall, is a function of several factors; including the body's mass, orientation, and skin area and texture. [1] In stable, belly-to-earth position, terminal velocity is about 200 km/h (120 mph).