tglobal_properties.h - simple_DEM - a simple 2D Discrete Element Method code for educational purposes
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       tglobal_properties.h (984B)
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            1 #ifndef GLOBAL_PROPERTIES_H_
            2 #define GLOBAL_PROPERTIES_H_
            3 
            4 /* Properties of sample */
            5 static const int np = 1000;                 /* Number of particles */
            6 
            7 /* Size distribution */
            8 static const double rmin = 1.0e-3;        /* Min. radius */
            9 static const double rmax = 2.0e-3;         /* Max. radius */
           10 
           11 /* Properties of grains */
           12 static const double kn = 1.0e5;                /* Normal stiffness */
           13 static const double nu = 30.0;                /* Normal damping */
           14 static const double rho = 1000.0;        /* Density of the grains */
           15 static const double mu = 0.5;                /* Sliding friction */
           16 static const double kt = 1.0e5;                /* Tangential stiffness */
           17 
           18 /* Temporal variables */
           19 static const double dt = 1.0e-4;        /* Time step lenpth */
           20 static const int maxStep = 5000;        /* Number of steps */
           21 static const int fileInterval = 20;        /* No. of steps between output */
           22 
           23 /* Physical constants */
           24 static const double grav = 9.80;        /* Gravity magnitude */
           25 
           26 /* Number of particles along the width in the initial configuration */
           27 static const int npw = 30;
           28 
           29 #endif