Schauberger
Through the indirectly engendered cooling the density increases, whereby the frictional pressure is intensified by the mechanically-induced increase in velocity. The arrangement of the guide-vanes causes a spiral circumvolution, so that the bipolar ingredients, which rub against one another flow all the faster as their volume is reduced by the constant abrasion. Apart from the circumfluent motion another form of motion is also active which causes the bodies of the ingredients to swirl about their own axes and ensures their abrasion on all sides. [The Energy Evolution - Harnessing Free Energy from Nature, The Liquefaction of Coal by Means of Cold Flows]

See Also

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antagonism
friction
mechanical abrasion
mutual abrasion
resistance