21   PetscReal lidvelocity, prandtl, grashof; /* physical parameters */  member
80   user.grashof     = 1.0;  in main()
84   PetscCall(PetscOptionsGetReal(NULL, NULL, "-grashof", &user.grashof, NULL));  in main()
116 … # = %g, grashof # = %g\n", (double)user.lidvelocity, (double)user.prandtl, (double)user.grashof));  in main()
163   PetscReal grashof, dx;  in FormInitialGuess()  local
167   grashof = user->grashof;  in FormInitialGuess()
197       x[j][i].temp  = (grashof > 0) * i * dx;  in FormInitialGuess()
213   PetscReal       grashof, prandtl, lid;  in FormFunctionLocal()  local
223   grashof = user->grashof;  in FormFunctionLocal()
294       f[j][i].temp  = x[j][i].temp - (PetscReal)(grashof > 0);  in FormFunctionLocal()
329 …p * (u - x[j - 1][i].omega) + vym * (x[j + 1][i].omega - u)) * hx - .5 * grashof * (x[j][i + 1].te…  in FormFunctionLocal()