
#1
Jun2512, 01:34 PM

P: 7

Hi everybody, I have a problem with this equation:
it represents the motion of a gas in a duct with friction (Fanno flow). I need to plot this function in a Ts plot, do you have any ideas? the Mach number changes along the curve... R=constant S_{2}S_{1}=R*(M^{2}1)*log(T_{2}/T_{1})$ 



#2
Jun2612, 11:37 AM

HW Helper
P: 1,391

What exactly do you want to plot? S_{2}S_{1} vs. T_{2}, or vs. T_{2}/T_{1}?
What variables does M (the Mach number?) depend on? Is it just a function of T? S and T? If it depends on both you'll need to do a contour plot. (The brute force way of doing a contour plot is basically to generate a grid of S and T points and then plot a point for every pair of values (T,S) that satisfy the equation). 


Register to reply 
Related Discussions  
Arrhenius equation plot  Biology, Chemistry & Other Homework  9  
Maple gives plot inconsistent with equation  Math & Science Software  0  
please help me plot this equation!!  Math & Science Software  2  
energy vs. entropy plot for a Carnot cycle  Advanced Physics Homework  0  
Hill's equation and plotBiochem  Biology, Chemistry & Other Homework  1 