% Example compile-time options: 
%
%        BOX_SPATIAL_DIMENSION=2
%        SELFGRAVITY_OFF
%        EOS_TILLOTSON
%        EOS_ELASTIC
%        KERNEL_FUNCTION=6
%
% (The choice of KERNEL_FUNCTION=6 is optional here. Experiment with different kernels.
%   But be sure to set DesNumNgb accordingly; for e.g. KERNEL_FUNCTION=5 or 7, use 40, =3, use 20, =4 or 6 use 32)
%
% Experiment with both HYDRO_MESHLESS_FINITE_MASS and HYDRO_DENSITY_SPH. On some elastic problems, SPH can
%   give improved problems, though if you have fluid phases, MFM tends to give better behavior.
%
InitCondFile                       ring_collision_ics % choose IC and resolution
OutputDir                          output
TimeMax                            300
TimeBetSnapshot                    5
MaxSizeTimestep                    0.1
DesNumNgb                          32 % make sure to set appropriate for kernel
%--- parameters here make EOS: P=cs*cs*(rho-rho_0), where cs=rho_0=1 in code units ---%
Tillotson_EOS_params_a             0
Tillotson_EOS_params_b             0
Tillotson_EOS_params_u_0           1e+20
Tillotson_EOS_params_rho_0         1
Tillotson_EOS_params_A             1
Tillotson_EOS_params_B             0
Tillotson_EOS_params_u_s           1e+20
Tillotson_EOS_params_u_s_prime     1e+20
Tillotson_EOS_params_alpha         0
Tillotson_EOS_params_beta          0
Tillotson_EOS_params_mu            0.22
Tillotson_EOS_params_Y0            1e+20
%-- optional [if having trouble on initial iteration to correct kernel sizes], can prompt with
%Softening_Type0                   0.001 % this is our elastic material