SIAM Journal on Applied Mathematics, Vol. 64, No. 3 (Mar. - Apr., 2004), pp. 878-901 (24 pages) The quasi-one-dimensional Euler equations in a duct of variable cross section form probably one of the ...

Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris. Being able to ...

DREXEL HILL, PA – November 03, 2025 – PRESSADVANTAGE – PJ MAC HVAC Service & Repair has announced an expansion of its ...

When we hear the words “pitot tube,” we tend to think more of airplanes than of air ducts, but [Franci Kopač]’s guide to pitot tubes for makers shows that they can be a remarkably versatile tool for ...

But what workers hate is not the air-conditioning itself. It’s the way that air-conditioning is distributed: through snaking overhead tunnels of metal ductwork and out the end of just a few vents ...

The Duct acoustic test rig (DUCT) is an extremely modular and versatile flow channel designed for acoustic measurements. At the test bench, we examine special silencer structures known as liners.

Edema develops when lymph does not return to the venous circulation at a rate equal to the rate of capillary filtration. Fetal sheep develop edema as well as an increased central venous pressure while ...