I have a signal that I am able to calculate through an acoustic model for airfoil noise. I am told that the model solves for a narrowband frequency response, however, my measurement data is provided in third-octave band representation.
How do I convert my current dataset to the third octave...
Thank you so much! It seems to be working! I guess the error shouldve been self explanatory but since I have no working knowledge of fortran I didnt know the syntax that I needed to get the programme working.
Just to add, however, I was using gfortran not gcc. I don't know if that made a...
Hi,
I'm having trouble with some FORTRAN code I'm trying to use.
I receive an error:
At line 769 of file ../src/mpolar.f (unit = 11, file = 'polarx.387')
Fortran runtime error: Sequential READ or WRITE not allowed after EOF marker, possibly use REWIND or BACKSPACE
Upon inspection...
Thank you Solkar.
What do you mean by using non standard names?
I'm new to fortran and wouldn't say I'm keen to learn it. I just need to use the programme for some work.
After using your suggestion it seemed to have compiled correctly although now I have some problems with additional...
Hello,
I'm trying to compile some software called MSES, its written by Mark Drela in some fortran flavour. I've successfully compiled a number of subroutines through make files but there is one subroutine giving me grief. It's called dplot.f.
It has a strage syntax I can't seem to work...
I was thinking of joining the RAF as an Engineering Officer not a pilot so that I could use my undergraduate engineering degree?
The reason I looked at the UK is because of my EU citizenship which I'd have thought would make it more accessible than say Canada or Australia.
I'm about to start my final year of Undergraduate Mechanical Engineering here is South Africa but as far as my options are for jobs in the Aeronautical field (which I'm interested in) they are limited to manufacturing and maintenance.
Because of this I'm thinking of joining the RAF after my...
That makes sense actually.
So assuming that I go
delta_st=F0/k=(150+12)*9.81/3000=0.52974
X1=delta_st*-5,836x10^-4=-0.000309
so then I'm assuming the changed displacement amplitude will be the difference between measured and X1 from calculations.
so X1'=-0.000309+0.0002=-0.000109mOh and...
Homework Statement
An air compressor of mass m1 = 150 kg is mounted on a spring of stiffness k1= 3000 N/m. The measured
displacement amplitude X1 = 0.0002 m at the operating speed of N = 1800 r/min. If an undamped isolation
system with mass m2=12 kg and a natural frequency w2 = 105 rad/s...
Homework Statement
see attachment.
Homework Equations
Navier Stokes continuity equation:
The Attempt at a Solution
So what I tried to do was to use the above equation to see if it equals zero.
del(rho)/del(t)=del(xyz-t)/del(t)
=-1
then to make the deriving easier...
Thanks. Its just that I had exactly the same question as the OP which I thought was interesting. Anywyas I figured it was just a different method of calculation.
I know this is really old but I have exactly the same issue! I'll be asking my lecturer within the week though. I think it has to do with the thickness value used though...
lol
Gah! My bad :( I feel quite stupid now... The exercise is on integrating factors and I didn't see that O_o
Thanks vela for clearing up integrating factors for me :D
so to continue...
∫1/(1-y)dy=∫cosxdx
-ln(1-y)=sinx+c
1-y=Ae^(-sinx), A=e^c
-y=Ae^(-sinx)-1
y=-Ae^(-sinx)+1
which according to...