Choked flow is a fluid dynamic condition associated with the Venturi effect. When a flowing fluid at a given pressure and temperature passes through a restriction (such as the throat of a convergent-divergent nozzle or a valve in a pipe) into a lower pressure environment the fluid velocity increases.
Red wine varietals that tend to benefit from a good bit of oak include: Pinot Noir, Cabernet Sauvignon, Merlot, Pinotage, Chianti, Zinfandel, Nebbiolo, Tempranillo and Syrah. White wine varietals that are receptive to oakâs influence include: Pinot Grigio, Pinot Blanc, Sauvignon Blanc, Semillon and of course Chardonnay.
French Oak. The oak forests in France are the source of several species of European oak trees including white oak used for oaking wine. French Oak (Quercus robur) is common throughout Europe and Sessile Oak (Quercus petraea) is a finer grain species that is more sparse.he top fifty most expensive wines in the world oak-age their wines in some way. Oak is a crucial and often overlooked component of the wine world. Everything from the type, size, age, grain and treatment of an oak barrel greatly affects the finished wine.