How to Calculate and Solve for Turbine Stiffness (Correction Factor) | Irrigation Water Requirement

The image above represents turbine stiffness.

To compute for turbine stiffness (correction factor), two essential parameters are needed and these parameters are Correction Factor for Radius of Curvature with Deflection (c) and Parallel Plate Stiffness for Tubing (σp).

The formula for calculating turbine stiffness:

σ = 0.149c[σp]

Where:

σ = Turbine Stiffness
c = Correction Factor for Radius of Curvature with Deflection
σp = Parallel Plate Stiffness for Tubing

Let’s solve an example;
Find the turbine stiffness when the correction factor for radius of curvature with deflection is 15 and the parallel plate stiffness for tubing is 3.

This implies that;

c = Correction Factor for Radius of Curvature with Deflection = 15
σp = Parallel Plate Stiffness for Tubing = 3

σ = 0.149c[σp]
σ = 0.149(15)[3]
σ = 6.705

Therefore, the turbine stiffness is 6.705.

Calculating for the Correction Factor for Radius of Curvature with Deflection when the Turbine Stiffness and the Parallel Plate Stiffness for Tubing is Given.

c = σ / 0.149 x σp

Where;

c = Correction Factor for Radius of Curvature with Deflection
σ = Turbine Stiffness
σp = Parallel Plate Stiffness for Tubing

Let’s solve an example;
Find the correction factor for radius of curvature with deflection when the turbine stiffness is 32 and the parallel plate stiffness for tubing is 8.

This implies that;

σ = Turbine Stiffness = 32
σp = Parallel Plate Stiffness for Tubing = 8

c = σ / 0.149 x σp
c = 32 / 0.149 x 8
c = 32 / 1.192
c = 26.84

Therefore, the correction factor for radius of curvature with deflection is 26.84.

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