The massing together of material to form clumps. → wind clumping.
Fr.: facteur de grumelage
The ratio fcl = <ρ2> / <ρ >2, where ρ represents the → stellar wind density and the brackets mean values. Unclumped wind has fcl = 1 and → clumping becomes significant for fcl≅ 4.
Fr.: grumelage de vent
The inhomogeneous property of a → radiation-driven wind, or the physical mechanism accounting for the → clumped wind.