Diffuser Efficiency Solution

STEP 0: Pre-Calculation Summary
Formula Used
Diffuser Efficiency = Actual Static Pressure Rise/Isentropic Static Pressure Rise
ηd = ΔP/ΔP'
This formula uses 3 Variables
Variables Used
Diffuser Efficiency - The diffuser efficiency is defined as the ratio of static pressure rise in an actual process to the static pressure rise in an isentropic process.
Actual Static Pressure Rise - (Measured in Pascal) - Actual Static Pressure Rise denotes the change(increase) in pressure between two points in a diffuser considering losses.
Isentropic Static Pressure Rise - (Measured in Pascal) - Isentropic Static Pressure Rise denotes the change in pressure(increase) between two points in a diffuser, assuming no losses.
STEP 1: Convert Input(s) to Base Unit
Actual Static Pressure Rise: 39 Pascal --> 39 Pascal No Conversion Required
Isentropic Static Pressure Rise: 40 Pascal --> 40 Pascal No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ηd = ΔP/ΔP' --> 39/40
Evaluating ... ...
ηd = 0.975
STEP 3: Convert Result to Output's Unit
0.975 --> No Conversion Required
FINAL ANSWER
0.975 <-- Diffuser Efficiency
(Calculation completed in 00.004 seconds)

Credits

Created by ADITYA RAWAT
DIT UNIVERSITY (DITU), Dehradun
ADITYA RAWAT has created this Calculator and 50+ more calculators!
Vishwakarma Institute of Information Technology, Pune (VIIT Pune), Pune
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4 Inlets Calculators

Diffuser Efficiency given Inlet and Exit Velocities
Go Diffuser Efficiency = Actual Static Pressure Rise/(Density of Air/2*(Inlet Velocity to Diffuser^2-Exit Velocity to Diffuser^2))
Diffuser Efficiency
Go Diffuser Efficiency = Actual Static Pressure Rise/Isentropic Static Pressure Rise
Kinetic Energy of Air at Inlet
Go Kinetic Energy = 1/2*Mass Flow Rate of Air*Aircraft Forward Speed^2
Inlet drag
Go Inlet drag = Mass Flow Rate of Air*Aircraft Forward Speed

Diffuser Efficiency Formula

Diffuser Efficiency = Actual Static Pressure Rise/Isentropic Static Pressure Rise
ηd = ΔP/ΔP'

It exlplains how efficiently the diffuser is working in a process

We look into the pressures at two given points and calculate the differences separately for both actual and ideal(isentropic process).The change in pressure in ideal process can also be changed to the change in kinetic energy =0.5*ρ*(C1square-C2square) where C1 and C2 stand for the velocities at point 1 and 2 .

How to Calculate Diffuser Efficiency?

Diffuser Efficiency calculator uses Diffuser Efficiency = Actual Static Pressure Rise/Isentropic Static Pressure Rise to calculate the Diffuser Efficiency, Diffuser Efficiency formula is defined as the ratio of static pressure rise in the actual process to the static pressure rise in the isentropic process. Diffuser Efficiency is denoted by ηd symbol.

How to calculate Diffuser Efficiency using this online calculator? To use this online calculator for Diffuser Efficiency, enter Actual Static Pressure Rise (ΔP) & Isentropic Static Pressure Rise (ΔP') and hit the calculate button. Here is how the Diffuser Efficiency calculation can be explained with given input values -> 0.975 = 39/40.

FAQ

What is Diffuser Efficiency?
Diffuser Efficiency formula is defined as the ratio of static pressure rise in the actual process to the static pressure rise in the isentropic process and is represented as ηd = ΔP/ΔP' or Diffuser Efficiency = Actual Static Pressure Rise/Isentropic Static Pressure Rise. Actual Static Pressure Rise denotes the change(increase) in pressure between two points in a diffuser considering losses & Isentropic Static Pressure Rise denotes the change in pressure(increase) between two points in a diffuser, assuming no losses.
How to calculate Diffuser Efficiency?
Diffuser Efficiency formula is defined as the ratio of static pressure rise in the actual process to the static pressure rise in the isentropic process is calculated using Diffuser Efficiency = Actual Static Pressure Rise/Isentropic Static Pressure Rise. To calculate Diffuser Efficiency, you need Actual Static Pressure Rise (ΔP) & Isentropic Static Pressure Rise (ΔP'). With our tool, you need to enter the respective value for Actual Static Pressure Rise & Isentropic Static Pressure Rise and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Diffuser Efficiency?
In this formula, Diffuser Efficiency uses Actual Static Pressure Rise & Isentropic Static Pressure Rise. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Diffuser Efficiency = Actual Static Pressure Rise/(Density of Air/2*(Inlet Velocity to Diffuser^2-Exit Velocity to Diffuser^2))
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