The image above represents viscosity of bingham fluids.

To compute for viscosity of bingham fluids, three essential parameters are needed and these parameters are **Yield Stress (ζ _{y}), Shear Rate (γ)** and

**Co-efficient of Rigidity (η**

_{B}).The formula for calculating viscosity of bingham fluids:

η_{a} = η_{B} + ^{ζy} / _{γ}

Where:

η_{a} = Viscosity of Bingham Fluids

ζ_{y} = Yield Stress

γ = Shear Rate

η_{B} = Co-efficient of Rigidity

Let’s solve an example;

Find the viscosity of bingham fluids when the yield stress is 21, the shear rate is 18 and co-efficient of rigidity is 14.

This implies that;

ζ_{y} = Yield Stress = 21

γ = Shear Rate = 18

η_{B} = Co-efficient of Rigidity = 14

η_{a} = η_{B} + ^{ζy} / _{γ}

η_{a} = 14 + ^{21} / _{18}

η_{a} = 14 + 1.166

η_{a} = 15.16

Therefore, the **viscosity of bingham fluids **is **15.16.**

**Calculating for Yield Stress when the Viscosity of Bingham Fluids, the Shear Rate and the Co-efficient of Rigidity is Given.**

ζ_{y} = (η_{a} – η_{B}) γ

Where;

ζ_{y} = Yield Stress

η_{a} = Viscosity of Bingham Fluids

γ = Shear Rate

η_{B} = Co-efficient of Rigidity

Let’s solve an example;

Find the yield stress when the viscosity of bingham fluids is 12, the shear rate is 14 and the co-efficient of rigidity is 8.

This implies that;

η_{a} = Viscosity of Bingham Fluids = 12

γ = Shear Rate = 14

η_{B} = Co-efficient of Rigidity = 8

ζ_{y} = (η_{a} – η_{B}) γ

ζ_{y} = (12 – 8) 14

ζ_{y} = (4) 14

ζ_{y} = 56

Therefore, the **yield stress **is **56.**

**Calculating for Shear Rate when the Viscosity of Bingham Fluids, the Yield Stress and the Co-efficient of Rigidity is Given.**

γ = ^{(ηa – ηB)} / _{ζy}

Where;

γ = Shear Rate

η_{a} = Viscosity of Bingham Fluids

ζ_{y} = Yield Stress

η_{B} = Co-efficient of Rigidity

Let’s solve an example;

Find the shear rate when the viscosity of bingham fluids is 20, the yield stress is 15 and the co-efficient of rigidity is 12.

This implies that;

η_{a} = Viscosity of Bingham Fluids = 20

ζ_{y} = Yield Stress = 15

η_{B} = Co-efficient of Rigidity = 12

γ = ^{(ηa – ηB)} / _{ζy}

γ = ^{(20 – 12)} / _{15}

γ = ^{8} / _{15}

γ = 0.53

Therefore, the **shear rate **is **0.53.**

**Calculating for Co-efficient of Rigidity when the Viscosity of Bingham Fluids, the Yield Stress and the Shear Rate is Given.**

η_{B} = η_{a} – (^{ζy} / _{γ})

Where;

η_{B} = Co-efficient of Rigidity

η_{a} = Viscosity of Bingham Fluids

ζ_{y} = Yield Stress

γ = Shear Rate

Let’s solve an example;

Find the co-efficient of rigidity when the viscosity of bingham fluids is 14, the yield stress is 10 and the shear rate is 6.

This implies that;

η_{a} = Viscosity of Bingham Fluids = 14

ζ_{y} = Yield Stress = 10

γ = Shear Rate = 6

η_{B} = η_{a} – (^{ζy} / _{γ})

η_{B} = 14 – (^{10} / _{6})

η_{B} = 14 -1.667

η_{B} = 12.33

Therefore, the **co-efficient of rigidity **is **12.33.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the viscosity of bingham fluids.

To get the answer and workings of the viscosity of bingham fluids using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

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Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Materials and Metallurgical **under **Engineering****.**

Now, Click on **Rheology **under **Materials and Metallurgical**

Now, Click on **Viscosity of Bingham Fluids **under **Rheology**

The screenshot below displays the page or activity to enter your values, to get the answer for the viscosity of bingham fluids according to the respective parameters which is the **Yield Stress (ζ _{y}), Shear Rate (γ)** and

**Co-efficient of Rigidity (η**

_{B}).Now, enter the values appropriately and accordingly for the parameters as required by the **Yield Stress (ζ _{y})** is

**21**,

**Shear Rate (γ)**is

**18**and

**Co-efficient of Rigidity (η**is

_{B})**14**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the viscosity of bingham fluids and presents the formula, workings and steps too.