Why Poisson’s Ratio Cannot be Greater than 0.5
Theoretically the Poisson ratio should be in between -1 and 0.5 because of the following requirement : the modulus of elasticity (E ), modulus of rigidity (G), and bulk modulus…
Difference between Engineerig Stress and True Stress
The result of the applied force and the actual cross area at the moment of applying force tn that area is called true stress. Where as, the applied force divided…
Simplified ASME Thin Wall Pressure Vessel Design Calculation Example – Part 1- Overview
Here I will discuss a thin wall pressure vessel design calculation example according to the ASME section Viii division 1 code. Thick Wall vs. Thin Walled Pressure Vessel If the…
How to Use Pump Curve to Select a Pump for Your System
If you have the pump characteristic curves from your pump supplier and already managed to plot the system resistance curve for the piping system you are designing then it is…
How to Create the System Resistance Curve for Open System
Refer the concept of the system resistance curve from my previous article for better understanding this article. You will find an important equation there: Total system resistance = Frictional resistance…
How to Create the System Resistance Curve for Closed System
Like pump curve, this is another very important curve for the system designers. What is a System Resistance Curve? This is a graph plotted with flow rate along X axis…
How to Read a Pump Curve
What is Pump Characteristic Curve Graph? As the name suggest it is the curve which define the performance characteristics of a pump. Basically, the pump performance curve is plotted with…
Pipe Sizing Calculation – Part 8 – Determining the Actual Pressure Drop
We have reached the final part of the water piping system design calculation example tutorial. We will use most of the data calculated so far (refer Part-1 to Part-7) as…
Pipe Sizing Calculation – Part 7: Reading Moody’s Friction Factor from Chart
Moody friction factor will be used as another input for the D’arcy-Weisbech equation which is used for calculating the final pressure drop of the piping system design calculation example. The…
Pipe Sizing Calculation – Part 6: Determining Reynolds Number
In this part we will calculate Reynolds number for the pipe sizing calculation example. Refer Part-1 for understanding the problem statement and the solution steps. From the concept of Reynolds…
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