problem with groovyBC: "word::stripInvalid() called for word r"
 

when I use groovyBC in my run this error is shown.but simple boundary conditions have no error.

error:
---------------------------------------------------------------------------------------
fluxScheme: Kurganov

Starting time loop

Mean and max Courant Numbers = 1.06808 2.25305
deltaT = 1.72414e-07
Time = 1.72414e-07

diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal: Solving for rhoUx, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal: Solving for rhoUy, Initial residual = 0, Final residual = 0, No Iterations 0
swak4Foam: Allocating new repository for sampledGlobalVariables
smoothSolver: Solving for Ux, Initial residual = 0.0172088, Final residual = 2.44657e-17, No Iterations 3
smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 3.09454e-15, No Iterations 3
diagonal: Solving for rhoE, Initial residual = 0, Final residual = 0, No Iterations 0
word::stripInvalid() called for word r
For debug level (= 2) > 1 this is considered fatal
Aborted
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my U condition is:
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dimensions [0 1 -1 0 0 0 0];

internalField uniform (0 0 0);

boundaryField
{
right
{
type fixedValue;
value uniform (0 0 0);
}

left
{
type groovyBC;
variables "PI=3.1415926535;y_max=max(pts().y);y_min=min(pts( ).y);r=0.06;rpm=3600;omegav=rpm*PI/30;vel_r=r*omegav;tetha_1=11*PI/180;tetha_2=60*PI/180;tetha_3=90*PI/180;time_1=tetha_1/omegav;time_2=tetha_2/omegav;time_3=tetha_3/omegav;pr_01=250000;Tr_01=288;pr_02=100000;Tr_02=2 88;gamma=1.4;R_g=287.14;H_t=gamma*R_g*internalFiel d(T)/(gamma-1)+0.5*pow(mag(internalField(U)),2);R_minus=mag(in ternalField(U))-(2/(gamma-1))*sqrt(gamma*R_g*internalField(T));c_b=(-2*R_minus+sqrt(4*pow(R_minus,2)-4*(1+2/(gamma-1))*((gamma-1)/2)*(pow(R_minus,2)-2*H_t)))/(2+4/(gamma-1));U_b=2*c_b/(gamma-1)+R_minus;time_final=0.005;";
valueFraction "((y_max-pos().y)/vel_r+time_2<=time()&&time()<=time_3)?0:1";
valueExpression "(0<=time()&&time()<=((y_max-pos().y)/vel_r))||(time_1<=time()&&time()<=time_2)||(time_2 <=time()&&time()<=((y_max-pos().y)/vel_r+time_2))||(time_3<=time()&&time()<=time_fina l) ? vector(0,-vel_r,0):vector(U_b,0,0)";
gradientExpression "vector(0,0,0)";
value uniform (0 0 0);
//type fixedValue;
//value uniform (2 0 0);
//type zeroGradient;
}
//M1=sqrt(((pow((pr_01/p_prime),.2857142857))-1)*(2/(gamma-1)))
walls
{
type fixedValue;
value uniform (0 0 0);

}

empty
{
type empty;

}
}
---------------------------------------------------------------------------------------


my p is this:
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dimensions [1 -1 -2 0 0 0 0];

internalField uniform 1000;

boundaryField
{
right
{
type zeroGradient;
}

left
{
type groovyBC;
variables "PI=3.1415926535;y_max=max(pts().y);y_min=min(pts( ).y);r=0.06;rpm=3600;omegav=rpm*PI/30;vel_r=r*omegav;tetha_1=11*PI/180;tetha_2=60*PI/180;tetha_3=90*PI/180;time_1=tetha_1/omegav;time_2=tetha_2/omegav;time_3=tetha_3/omegav;pr_01=250000;Tr_01=288;pr_02=100000;Tr_02=2 88;gamma=1.4;R_g=287.14;H_t=gamma*R_g*internalFiel d(T)/(gamma-1)+0.5*pow(mag(internalField(U)),2);R_minus=mag(in ternalField(U))-(2/(gamma-1))*sqrt(gamma*R_g*internalField(T));c_b=(-2*R_minus+sqrt(4*pow(R_minus,2)-4*(1+2/(gamma-1))*((gamma-1)/2)*(pow(R_minus,2)-2*H_t)))/(2+4/(gamma-1));U_b=2*c_b/(gamma-1)+R_minus;time_final=0.005;";



valueFraction "((0<=time()&&time()<=((y_max-pos().y)/vel_r))||(time_1<=time()&&time()<=time_2)||(time_2 <=time()&&time()<=((y_max-pos().y)/vel_r+time_2))||(time_3<=time()&&time()<=time_fina l)?0:1";

valueExpression "(time()<time_1) ? pr_01*(1+(gamma-1)/2*(U_b/c_b)^2)^(gamma/(gamma-1)):pr_02*(1+(gamma-1)/2*((sqr(mag(internalField(U))))/(gamma*R_g*internalField(T))))^(-gamma/(gamma-1))";

gradientExpression "0";
value uniform 100000;
//type fixedValue;
//value uniform 250000;
}

walls
{
type zeroGradient;

}

empty
{
type empty;

}
}
---------------------------------------------------------------------------------------

and the T boundary condition is:
---------------------------------------------------------------------------------------
dimensions [0 0 0 1 0 0 0];

internalField uniform 288;

boundaryField
{
right
{
type zeroGradient;
}

left
{
type groovyBC;
variables "PI=3.1415926535;y_max=max(pos().y);y_min=min(pos( ).y); r=.06;rpm=3600;omegav=rpm*PI/30;vel_r=r*omegav;tetha_1=11*PI/180;tetha_2=60*PI/180;tetha_3=90*PI/180;time_1=tetha_1/omegav;time_2=tetha_2/omegav;t_3=tetha_3/omegav;pr_01=250000;Tr_01=288;pr_02=100000;Tr_02=2 88;gamma=1.4;R_g=287.14;H_t=gamma*R_g*internalFiel d(T)/(gamma-1)+0.5*pow((mag(internalField(U))),2);R_minus=mag( internalField(U))-(2/(gamma-1))*sqrt(gamma*R_g*internalField(T));c_b=(-2*R_minus+sqrt(4*pow(R_minus,2)-4*(1+2/(gamma-1))*((gamma-1)/2)*(pow(R_minus,2)-2*H_t)))/(2+4/(gamma-1));U_b=2*c_b/(gamma-1)+R_minus;";



valueFraction "(y_max-y)/vel_r<time()&&time()<time_1)?1:0";

valueExpression "Tr_01/(1+(gamma-1)/2*(U_b/c_b)^2)";

gradientExpression "0";
value uniform 288;

Which version of groovy/swak4Foam do you use? I guess it is an old one (this problem should be fixed in the current release): the problem is that the old version was sensitive to spaces on the left hand side of = (in the current version these get stripped away. Spaces on the right are always ignored). My guess is that you have a space somewhere at the "r=someExpression;" but it is hard to see the way you formatted the output (use the CODE-tag above).

BTW: do yourself a favour and use the list-form for variables (it is much easier to read than the single string:

is it possible to write formulas in more than one line in valueExpression etc too?

No. Reason is that OF doesn't support multiline string variables in files (at least to my knowledge).