[mafz1g11]

Greetings!

I'm simulating an oscillating aerofoil for energy production. The idea is to make 2 separate mesh zones. One is for the plunging motion(vertical motion) of the aerofoil. It is set in fluent as a vertical translation reference frame via the source term. The other mesh is for the pitching motion(rotating sinusoidal) of the aerofoil. It is set as a sliding rotating mesh in the centre of the other mesh.

I'm defining the rotating motion using the micro DEFINE_ADJUST to set the rotating speed via the mesh motion tab in cell zone condition.

I use this code:

DEFINE_ADJUST(speed, domain)
{
Thread *t;
real time = CURRENT_TIME;
real omega;
real th, thd, thdd;
real w = 2.0*M_PI*0.25696;
real wt = w*time;

th = 76*sin(wt+90);
thd = 76*w*cos(wt+90);
thdd = -w*w*th;
omega = thd;

thread_loop_c(t,domain)
{
if (THREAD_VAR(t).cell.surface_body == MOTION_TYPE_MOVING_GRID)
{
THREAD_VAR(t).cell.omega = omega;
}
}
}


But then it gave me this error:

pitch.c: In function 'speed':
pitch.c:21: error: 'struct tv_cell_struct' has no member named 'motion_spec'
pitch.c:21: error: 'MOTION_TYPE_MOVING_GRID' undeclared (first use in this function)
pitch.c:21: error: (Each undeclared identifier is reported only once
pitch.c:21: error: for each function it appears in.)
make[3]: *** [pitch.o] Error 1

My question is, what is motion_spec and MOTION_TYPE_MOVING_GRID means in this coding? And is there another way that I can do to produce the sinusoidal rotating mesh motion.

Thanks!

[ronak]

Hi
Have you overcome to this problem?