Fluid Dynamics Flow Calculators - Prof. S. A. E. Miller

See notes and instructions at the bottom of the page. Copyright Steven A. E. Miller 2021 - Present. All rights reserved. Version 1.01. Sept. 20, 2021. Return to my homepage. Visit me on my University of Florida research group page.


Ideal Gas Calculator

p [Pa]
ρ [kg/m3]
T [K]
R [J/kg K]

Approximate Fast Standard Atmosphere Calculator

Altitude [m]
p [Pa]
ρ [kg/m3]
T [K]

Isentropic Flow Calculator

A/A*
M
po/p
To/T
ρo
γ
Mach angle [deg.]
Prandtl-Meyer [deg.]

Normal Shock

M1
M2
p2/p1
po,2/po,1
T2/T1
u2/u1
γ
ρ21

Oblique Shock (Wedge)


M1
Mn,1
M2
Mn,2
p2/p1
po,2/po,1
T2/T1
u2/u1
v2/v1
β [deg.]
γ
ρ21
θ [deg.]

Rayleigh Flow

M
p/p *
p o/po*
T/T *
T o/To*
u/u *
γ
ρ/ρ *

Fanno Flow

4fL*/D
M
p/p*
po/po*
T/T*
u/u*
γ
ρ/ρ*

Instructions and Notes

General use. Almost every calculator can be used by clearing them (clear button) and then typing in a single value. The calculator will automatically seek all other values. When there is a pull-down menu available, it will either denote the flow being supersonic or subsonic. Or, it might denote which variable is being used for the calculation.

These calculators are meant for someone with a working knowledge in the field. There are very few if no checks on input. The user may provide under-determined or over-determined information in the calculators. They are generally designed to give answers. However, certain values provide mathematiclaly impossible situations. These often return NaN or alter the original input value. Users should always be skeptical of all calculations, which is good practice in any event.

Each calculator solves analytical equations of fluid dynamics for specific problems. Closed form solutions are evaluated if possible. Numerical solutions using various techniques are employed when analytical approaches are not available. Below are descriptions or notes for each calculator


Future improvements - a checklist.


References


Debugger