Pierre-Louis-Georges du Buat

Count Pierre-Louis-George du Buat (23 April 1734 – 17 October 1809) was a French military engineer who worked on problems in hydraulics and hydrodynamics.

He examined the flow of water and came up with a mathematical formulation defining the rate of flow of water through pipes which he published in Principes d’hydraulique, vérifiés par un grand nombre d’expériences faites par ordre du gouvernement.

Du Buat came from a noble family and was born in a manor at Buttenval, Tortisambert in Normandy.

Du Buat also studied the dependence of viscosity of liquids on temperature.

Du Buat married the daughter of Gérard Bosquet in 1758 which made him a shareholder of the Compagnie des mines d'Anzin.