pressure of ideal fluid

Ideal Fluid

Before we discuss the static fluid, we restrict the fluid prior to what we will learn.Fluid that we will learn this time is fluid idela. Nature - the nature of the ideal fluid is:

1. Incompressible (does not change when under pressure)

2. Non viscosity (when moving does not have friction) 
3. The flow is stationary (constant)

Static Fluid Definis

Have you ever put water in a glass. Then the water is muted until no part - the water that moves (of course, part - the part in question of a macro). Such circumstances is called static fluid, which is not subjected to fluid transfer part - sections. In the static fluid we will learn about pressure and surface tension.

Pressure Hidrostatis

When we dive in the lake or the ocean, the more we dive in we will feel the pressure increased. Likewise, atmospheric pressure will gradually decreases with increasing altitude. This is why the aircraft cabin pressure should be.However, we are quite difficult to determine the atmospheric pressure at a certain height because the atmospheric density is not constant. For liquids such as water kerapatannya constant, then the pressure will increase linearly with increasing depth appropriate. (Depth is calculated from the fluid surface).

Try, we see that there is fluid in the glass! We consider only the fluid is an ideal fluid.

At the top layers, fluid for atmospheric pressure (Po). However, because the fluid has time to raise the gravity to be pressing on the glass base. Until the stress in the glass of the policy are:

Because pressure is the style of the area per unit area of the bear-style ( ), then the pressure at the base of the glass are:

We know that they are the mass of the mass per unit volume, so  we assume, the glass is a cylinder. Until the volume is broad base multiplied by height (V = A h)

Thus, the pressure at the base glass hidrostatis are:

Apparently, hidrostatis pressure depending on depth and does not depend on the shape and surface area of ​​the vessel. Until hidrostatis pressure on one type of fluid on the surface of the earth will be the same for all points that have the same depth.

                                                                             

Resources:

http://fisikasma-online.blogspot.com/2010/06/fluida-statis