The fundamental difference between smouldering and flaming combustion is that smouldering occurs on the surface of the solid rather than in the gas phase. Smouldering is a surface phenomenon but can propagate to the interior of a porous fuel if it is permeable to flow. The characteristic temperature and heat released during smouldering are low compared to those in the flaming combustion (i.e., ~600 Â°C vs. ~1500 Â°C). Smouldering propagates in a creeping fashion, around 0.1 mm/s, which is about ten times slower than flames spread over a solid.
Quick Answer. A sheep's pluck is the internal organs of a sheep, specifically the liver, lungs and heart. Chefs and home cooks dice these organs and stuff them into a sheep's stomach to prepare the traditional Scottish dish called haggis. Continue Reading.
J.A.Turton. 1  Sheep-scab is a condition in sheep caused by infestation with a particular type of mite (Psoroptes ovis, known as the sheep-scab mite). You may see wool in the mouth of the sheep and wool may also be found on fences and other objects against which the sheep rub. 2  Fluid leaks from the irritated skin, and dries to form yellow crusts or scabs. 3  This is why the condition is called scab. 4  You will see bare, scabby patches and matted wool.