It is honestly hard to explain what pressure is, but sometimes it can help to actually vision it. That way it is easier to relate to and know what to look for. Where can pressure be found? Here you will find the most important five examples.
With fluid pressure we both mean liquids and gasses. The Fluid pressure is usually the stress at some point in the fluid due to the compressive nature. You can find it in two situations. One, in bodies like oceans, the atmosphere when fluid is under open channel flow and thus known as the open condition. Other, when you consider a water or gas line going through a confined pipeline known as the closed conduit.
When a moving fluid is stopped forcefully to make it stationary, it makes stagnation pressure. A liquid which is moving with a high speed is expected to have a high stagnation pressure when it is forced to stop still. The same liquid has low static pressure. This type of pressure is the one the fluid would obtain if brought to rest without loss of mechanical energy.
When ignition of explosive mist, air suspensions with dust, some highly inflammable and reactive gasses occur. This pressure creates a burst of energy. You can often think of something such as a fire. That is the best example to give for this type of pressure. In a lab there is also a higher chance of an explosion pressure because of all the chemicals.
Surface pressure is the two-dimensional analogue version of normal pressure. It is signified by the lateral force per unit length applied on a line 90 degrees angle to the length of the surface. Measuring surface pressure can help in investigating the properties of surface chemicals used in many different industries. For example the sea levels is something you can measure.
In a sort of closed system, a vapor is in thermodynamic equilibrium with its condensed phases. In this situation, the vapor exerts a pressure which is the vapor pressure. This is because of the fact that all solids and also liquids retain the tendency to evaporate and form their gaseous states. One of the best examples of vapor pressure in real life is the relative humidity experienced by a person in a particular area.
This way it might be a bit easier to understand pressure and where it can be found. Of course there are more examples but you will come across these ones the most. Luckily there are also enough specialists like Pressure control solutions that can help you if you have any type of question about pressure and how it exactly works.