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TIME REQUIRED TO EMPTY A TANK THROUGH AN ORIFICE


Now we will go ahead to find out the time of emptying a tank through an orifice fitted at its bottom, in the subject of fluid mechanics, with the help of this post. 

Let us consider we have one tank filled with a liquid up to a height of H1. Let us consider that one orifice is fixed at the bottom of the tank. We are interested here to determine the time taken in emptying the tank. 
Let us consider the following data from above figure.
A = Area of the tank
a = Area of the orifice
H1= Initial height of the liquid in the tank
H2= Final height of the liquid in the tank
T = Time taken in emptying the tank from H1 to H2. 

Time taken in emptying the tank from H1 to H2 will be given by following formula as mentioned here. 

Let us determine the time emptying the tank, H2 will be zero. 

This is the expression for the time emptying the tank fitted with orifice at its bottom. 

Now we will go ahead to find out the method to determine the time of emptying a hemispherical tank through an orifice at its bottom, in the subject of fluid mechanics, in our next post. 

Do you have any suggestions? Please write in comment box. 

Reference:

Fluid mechanics, By R. K. Bansal
Image Courtesy: Google

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