curl(3rheolef) rheolef-6.1 curl(3rheolef)NAME
curl -- curl operator
SYNOPSIS
form(const space V, const space& M, "curl");
DESCRIPTION
Assembly the form associated to the curl operator on finite element space. In three dimensions, both V and M are vector-valued:
/
|
b(u,q) = | curl(u).q dx
|
/ Omega
In two dimensions, only V is vector-valued. The V space may be a either P2 finite element space, while the M space may be P1d. See also
form(2) and space(2).
EXAMPLE
The following piece of code build the divergence form associated to the P2 approximation for a three dimensional geometry:
geo omega("cube");
space V(omega, "P2", "vector");
space M(omega, "P1d", "vector");
form b(V, M, "curl");
while this code becomes in two dimension:
geo omega("square");
space V(omega, "P2", "vector");
space M(omega, "P1d");
form b(V, M, "curl");
SEE ALSO form(2), space(2)rheolef-6.1 rheolef-6.1 curl(3rheolef)
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s_curl(3rheolef) rheolef-6.1 s_curl(3rheolef)NAME
s_curl -- curl-like operator for the Stokes stream function computation
SYNOPSIS
form(const space M, const space& V, "s_curl");
DESCRIPTION
Assembly the form associated to the s_curl operator on a finite element space V:
/
|
b(xi,u) = | u.s_curl(xi) dx
|
/ Omega
The M and V space may be a either P1 or P2 finite element space. The M space is scalar-valued while the V is vector-valued. See also
form(2) and space(2).
For cartesian coordinate systems, this form coincide with the usual "curl" one (see curl(3)). In the axisymmetric case:
/
| (d xi d xi )
b(xi,u) = | (---- ur - ---- uz) r dr dz
| (d z d r )
/ Omega
The b form is denoted as "s_curl", for Stokes stream function computation (see s_grad_grad(3)) as it is closely related to the "curl" oper-
ator (see curl(3)), but differs by the r and 1/r factors, as:
( d (r xi) d xi )
curl(xi) = ( (1/r) -------- ; - -----)
( d r d z )
while
( d xi d xi )
s_curl(xi) = ( ---- ; - ---- )
( d r d z )
Notice also that the differentiation is performed on the xi variable here: b(xi,u)=(s_curl(xi),u) while the "curl" form brings the differ-
entiation on the u vector-valued variable: (curl(u),xi), i.e. a transpose formulation.
ORIENTATION AND SIGN FIX
The (r,theta,z) coordinate system has positive orientation, thus (z,r,theta) and (z,r) are positive also. But (r,z,theta) and (r,z) are
negative : the sign of s_curl is then inverted to obtain the same result as if (z,r) was used.
EXAMPLE
The following piece of code build the form associated to the P1 approximation:
geo g("square");
space M(g, "P1");
space V(g, "P1", "vector");
form a(M, V, "s_curl");
SEE ALSO form(2), space(2), curl(3), s_grad_grad(3), curl(3)rheolef-6.1 rheolef-6.1 s_curl(3rheolef)
hi i have a file content like
my_file:
1US8738297897918000
000
000
i used
while IFS= read line
do
echo "$line" | grep '^\
then
last=`echo "$line" | cut -c 3-20`
echo "$last"
fi
done < $my_file
but it is writing blank spaces into the o/p fie (1 Reply)
Hello,
I have searched for a good part of the day, but cannot seem to find an answer to this. I hope this is an appropriate forum for my question.
I am wanting to download a blog web page using a script. It requires username and password login. I have tried the following (an example) to no... (1 Reply)
I am trying to fill out a web form from within a script I am writing. I think that I should be using curl to do this, but I'm not really sure. The form has username and password fields and a submit button. I want to be able to log in from the command line.
Html from the site:
<h5... (2 Replies)
Hello all.
I have an incredible number of servers that I need to change a parameter on using a web interface. I'd like to be able to do this via curl, but I'm having some trouble. I filled out the form and hit update while snooping (tcpdump) my interface. That gave the the following as what is... (0 Replies)
hello guys.
i'm new to c++. i've problem using two dimensional vector.
i've a project of making conway's game of life. this is the code that i have made so far.
my problem is how can i give a two dimensional vector through main.
glider.vec1 = vec; is not correct way to give a two... (2 Replies)
I am trying to get text from a webpage, in terminal form. So far I am:
1. getting the html for the page printed using curl (curl -s webpage.com), which is then
2. piped to awk, printing line number 29 (awk NR==29), then
3. this is where I am sort of lost. I know where in the printed line I... (7 Replies)
Hi my problem is that I need to send a form to a web address using curl, from a unix shell, the web address on the receiving end will only accept incoming data from a specific ip address, and port, on another machine on our intranet, and I can not run curl on that machine. Is there any way I... (5 Replies)
Hi
My goal is to fill an HTML form and submit.
What I have managed to do:
1. curl command to fill up the form and submit
2. a file which has the input
curl command:
curl -v -b cookie.txt -d __CSRFToken__=dc23d5da47953b3b390ec68d972af10380908b14 -d do=create -d a=open -d... (10 Replies)
I'm having an issue with curl post form, I dont' understand what I'm mising. I would like to send a post command login/password to a form, quite simple in the paper.
URL : http: // <myebsite> / login
Here the form source code :
<form action="/login_check" method="post">
<input... (3 Replies)
i have script got error when curl message . i think have some problem with character "space" or other because when i tried skip space , script running normal.
this is my script :
#!/bin/env bash
hostname="$(hostname)" now="$(date +'%d%h%y_%H.%M.%S')" while IFS= read -r line; do... (2 Replies)