Hydrodynamic Resistance Calculator


Here is a simple online calculator to calculate the hydrodynamic resistance. It is also referred to as Microfluidics / Hydraulic Resistance. Hydrodynamic Resistance (Rh) is related to the flow rate Q in a channel which is proportional to the applied pressure drop ΔP and is given as:ΔP = RhQ.
In the calculator below enter the values for dynamic viscosity, circular cross section length and radius of the channel and click calculate to calculate the hydrodynamic resistance.

Microfluidics / Hydraulic Resistance Calculation

N s/m2
length
length


Here is a simple online calculator to calculate the hydrodynamic resistance. It is also referred to as Microfluidics / Hydraulic Resistance. Hydrodynamic Resistance (Rh) is related to the flow rate Q in a channel which is proportional to the applied pressure drop ΔP and is given as:ΔP = RhQ.
In the calculator below enter the values for dynamic viscosity, circular cross section length and radius of the channel and click calculate to calculate the hydrodynamic resistance.

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Formula:

Rh = (8 x μ x L) / (3.14 x (R4)) Where, Rh = Hydrodynamic / Microfluidics / Hydraulic resistance μ = Dynamic Viscosity L = Circular Cross Section Length R = Circular Cross Section Radius

For an object which is completely immersed, the total coefficient of microfluidics / hydraulic resistance (Ch) is given as (Ch) = Rh / Displacement.

Example

Let us consider an example to calculate the microfluidics or hydraulic resistance with the given values,

Dynamic viscosity μ = 20
Circular cross section length L = 18
Circular cross section radius R = 8
Hydrodynamic Resistance = Rh = (8 x μ x L) / (3.14 x (R4))
Rh = (8 x 20 x 18) / (3.14 x (84))
Rh = 0.2238 Therefore, the value of Rh is 0.2238.


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