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Velocity vectors for square with top side sliding

Assignment 12.1

Use the code in the /numer/ directory of the CENG501 web site as a starting point. Add the capability to include arbitrarily specified normal component of velocity at the boundaries. The stream function at the boundary should be numerically calculated from the specified velocity at the boundary. Test the code with Couette and Plane-Poiseuille flows first in the x and then in the y directions. Display vector plot of velocity and contour plots of stream function and vorticity. Show your analysis and code.

Assignment 12.2

Form teams of two or three and do one of the following additions to the code. Find suitable problems to test code.

  1. Calculate pressure and stress. Test problems: Couette and Plane-Poiseuille flows.
  2. Calculate transient and finite Reynolds number flows. Test problems: Plate suddenly set in motion and flow in cavity.
  3. Add option for cylindrical polar coordinates. Use the coordinate transformation, z = ln r . Test problems: line source and annular rotational Couette flow.

Form new teams of two or three with one member that developed each part of the code. Include all features into the code. Test the combined features. Work together as a team to do the following simulation assignments.

Assignment 12.3

Boundary layer on flat plate. Compute boundary layer velocity profiles and drag coefficient and compare with the Blasius solution. What assumption is made about the value of the Reynolds in the Blasius solution?

Assignment 12.4

Flow around cylinder. Assume potential flow far from the cylinder. Calculate drag coefficient as a function of Reynolds number and compare with literature.

Assignment 12.5

Flow around cylinder. Find the Reynolds number at which boundary layer separation occurs.

Fortran on owlnet

Modern FORTRAN compilers in the MSWindows are very user friendly. They have built in project workspace routines, documentation, and integrated editor and debugger. If you use the FORTRAN compiler on Owlnet, it is useful to know how to use make files to compile and link FORTRAN code. The following is an example make file. You may give it the name, makefile , with no extension.

f77 -c streamf1.f; f77 -c bc1.f;f77 -c coef1.f; f77 -c asolve.f;f77 -c atimes.f; f77 -c dsprsax.f;f77 -c dsprstx.f; f77 -c linbcg.f;f77 -c snrm.f; f77 -o exe streamf1.o bc1.o coef1.o asolve.o atimes.o dsprsax.o dsprstx.o linbcg.o snrm.o

You have to give yourself permission to execute the make file with the one-time command,

chmod +x makefile

The line with the -c option compiles the source code and makes an object code file with the extension of .o. The line with the -o option links the object files into the executable file called exe . This executable file can be executed by typing its name, exe , on the command line.

This example makefile is not very efficient because it will compile every source code listed. There are instructions to recompile only the source code that has been modified or "touched" since the last time the makefile was invoked. However, I do not recall the instructions.

Questions & Answers

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Berger describes sociologists as concerned with
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Source:  OpenStax, Transport phenomena. OpenStax CNX. May 24, 2010 Download for free at http://cnx.org/content/col11205/1.1
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