Explore: Boundary Valve Problems

heart valves closing in a healthy 16 year old girl. The stethoscope is at the tricuspid area. Problems playing this file? See media help. A heart valve (cardiac

The sleeve valve is a type of valve mechanism for piston engines, distinct from the usual poppet valve. Sleeve valve engines saw use in a number of pre–World

significant maintenance overhead in keeping the ductwork clean and various valve systems working properly, along with the disadvantage that an engine failure

adopters   − = Valve New adopters {\displaystyle 10.1)\ {\mbox{Potential adopters}}\ -={\mbox{Valve New adopters}}} 10.2 )   Adopters   + = Valve New adopters 

distance field (SDF) is the orthogonal distance of a given point x to the boundary of a set Ω in a metric space (such as the surface of a geometric shape)

on a hot exhaust valve (which may mean the valve is running too hot because of poor seating, a weak valve spring or insufficient valve lash) A sharp edge

flow could be observed, and at the end of this pipe was a flow-control valve used to vary the water velocity inside the tube. When the velocity was low

non-nuclear secondary system, followed by a stuck-open pilot-operated relief valve (PORV) in the primary system, which allowed large amounts of water to escape

begins, and θ2 is where the valve closes (seconds, mm, radians). This has to be factored by the width (circumference) of the valve throat. The answer is usually

could have a negative effect. This poses a very difficult problem for engines, since valve timing is dynamic and based on engine speed, whereas the pulse