Check valve.
Yes, a check valve and a non-return valve are the same thing. They are designed to allow fluid or gas to flow in one direction only and prevent reverse flow.
Flaps of tissue that force unidirectional flow are called valves.
A device allowing only one-way motion is called a "check valve." It is designed to allow fluid or gas to flow in one direction only, preventing backflow or reverse flow in pipelines or systems.
This is an impermeable because it will not allow any fluid to pass through it.
Alfven wave
Drag is the friction that acts on objects moving through a fluid like air or water. It slows down the movement of the object by creating resistance in the opposite direction.
The force exerted by a fluid on an object moving through it is called drag force. This force acts opposite to the direction of the object's motion and increases with the speed of the object. It depends on various factors like the object's shape, size, and speed relative to the fluid.
The fluid friction that opposes the motion of objects is called viscous drag or fluid resistance. It is caused by the interaction between the object and the fluid it is moving through, which creates a force that acts in the opposite direction to the object's motion.
pericardiectomy
downward
The basic assumption inherent in Darcy's law is that the flow of fluid through a porous medium is proportional to the pressure gradient in the direction of flow. This assumes that the fluid is flowing through a homogeneous and isotropic medium.
Fluid inertia refers to the resistance of a fluid to changes in its motion. When an object moves through a liquid medium, the fluid's inertia can cause it to resist changes in direction or speed. This can affect the movement of the object by making it harder to accelerate or decelerate, and can also cause the object to experience drag or turbulence as it moves through the fluid.