Turbine Available Net Positive Suction Head Formula & Calculator
 

Turbine available NPSH calculator  formula & step by step calculation to measure how close the fluid at a given point is to flashing creates the cavitation. NPSH_{A} = (p_{0}/ρg)  (p_{v}/ρg)  (z_{e}  z_{0}) + h_{f}. Total pressure at lower free space p_{0} in kPa, vapor pressure p_{v} in kPa, fluid density ρ in kg/m^{3}, standard gravity g = 9.80 m/s^{2}, tube entrance elevation z_{e} in m, lower free space elevation z_{0} in m & turbine minor losses h_{f} in m are the key elements of this calculation.
Formula
In mechanical engineering, the below mathematical formula is used to calculate turbine available NPSH_{A} (Net Positive Suction Head). The step by step calculation for each set of inputs let users to undersyand how to perform such available NPSH_{A} calculations manually.
In the field of mechanical engineering, while working with hydropower plant erection, sometimes it's important to analyse the turbine available NPSH. The above formula & step by step calculation may useful for users to understand how the values are being used in the formula, however, when it comes to online for quick calculations, this turbine available NPSH_{A} calculator helps the user to perform & verify such calculations as quick as possible.