Random number generator
 

Hi all
I am wondering if anyone can help me to use the random number generator to select some cells on a boundary and to give them different boundary condition.
Thanks
AsaidZ

Here you have an example of how to use the C random number generator:

http://www.cplusplus.com/reference/c.../cstdlib/rand/

you can easily adapt this code to your problem.

Do

Thanks a lot for your reply
AsaidZ

Hello,

In OF 211, if I use the following random number generator :


scalar Random::scalar01()
{
return osRandomDouble();
}

The function osRandomDouble() is defined as:
Foam::scalar Foam::osRandomDouble()
{
#ifdef USE_RANDOM
return (scalar)random()/INT_MAX;
#else
return drand48();
#endif
}


Is the radnom number from this generator with zero mean and unity variance? Thanks