Table of Contents
- 1 Why do fluids flow from high to low pressure?
- 2 Does water flow from high to low density?
- 3 Why do fluids flow from a region of higher pressure to a region of lower pressure explain your answer with the help of an example?
- 4 Do fluids flow?
- 5 How does density affect fluid pressure?
- 6 How does density affect the viscosity of a fluid?
- 7 Why is there less oxygen at the top of the atmosphere?
Why do fluids flow from high to low pressure?
Because water is denser than air, water exerts more pressure than air does. Fluids flow from areas of high pressure to areas of low pressure. Differences in pressure are important in explaining how you breathe.
Does water flow from high to low density?
Dense water sinks below less dense water. This is the principle that drives the deep ocean currents that circulate around the world. A combination of high salinity and low temperature near the surface makes seawater dense enough to sink into the deep ocean and flow along the bottom of the basins.
Why are some fluid are referred to as incompressible?
The amount of space (volume) the liquid occupies does not change (actually the volume does change but the change is very tiny). Liquids are always considered to be incompressible fluids, as density changes caused by pressure and temperature are small.
What causes fluids to flow?
Fluids flow when there is a pressure difference between two points in order to equalize that pressure. Fluids flow in response to a net force. Pressure is simply force/area, and the differential pressure is simply a pressure gradient in a pipe and the fluid flows from high pressure to low pressure.
Why do fluids flow from a region of higher pressure to a region of lower pressure explain your answer with the help of an example?
Pressure is the force applied per unit area. Higher the pressure, higher would be force applied on adjacent molecules to move forward. By this way, the molecules move from high pressure region to low pressure region. Thus fluids moves from high pressure to lower pressure region.
Do fluids flow?
For liquids and gases these particles can flow over or alongside one another. That is why liquids and gases are also called fluids: because they can flow. This flow can be smooth, chaotic or anything in between.
Is density constant in incompressible flow?
Incompressible flow implies that the density remains constant within a parcel of fluid that moves with the flow velocity.
In which type of flow the density of fluid remains constant for the fluid flow?
Incompressible flow
Incompressible flow is that type of flow in which the density of the fluid is constant from one point to another. Liquids are generally incompressible and gases are compressible.
How does density affect fluid pressure?
As the density of the liquid increases, so does the pressure. If the liquid is open to the air, there will also be atmospheric pressure on its surface.
How does density affect the viscosity of a fluid?
The density of a fluid affects its viscosity. Fluids with more mass per unit volume are heavier and require more energy to move them and shear less easily. A temperature rise decreases the viscosity and density of liquids. The more viscous, or less slippery, a fluid the harder it is to get shearing between layers.
What happens when the density of the air is low?
When the air’s density is low, airplanes need longer runways to take off and land and they don’t climb as quickly as when the air’s density is high. Air density also affects the performance of automobiles, with lower density decreasing performance in the same way it decreases the performance of aircraft engines.
How does water vapor change the density of air?
(One oxygen atom with atomic weight of 16, and two hudrogen atoms each with atomic weight of 1). This is lighter than both nitrogen and oxygen. In other words, replacing nitrogen and oxygen with water vapor decreases the weight of the air in the cubic foot; that is, it’s density decreases.
Why is there less oxygen at the top of the atmosphere?
As air pressure decreases oxygen continues to account for about 21\% of the gasses in the air as it does at sea level. But, there is less oxygen because there is less of all of the air’s gasses. For instance, by the time you go to 12,000 feet the air’s pressure is about 40\% lower than at sea level.