User:Ujjavalverma10

A simple model for FRUSTUM OF A CONE

I am new to the ASCEND language and intend to contribute something to the community through GSOC2011. I have prior experience with GUI development and would be applying for projects involving GUI development. I wrote a sample model for Frustum Of A Cone

REQUIRE "system.a4l";
MODEL frustrum_of_cone;

    (* variables *)
    R,
    h,
    r,
    l,
    metal_density,
    curved_area,
    total_area,
    vol,
    metal_mass      IS_A solver_var;
    (* specifications *)
    R              = 30.0;
    r		   = 10.0;
    h              = 50.0;
    metal_density  = 9.60;
    
    (* equations *)
    l = sqrt(h^2 + (R-r)^2);
    vol = 3.1416*h*(R^2 + r^2 + r*R)/3;
    curved_area = 3.1416*l*(R+r);
    total_area = 3.1416*(R^2 + r^2) + curved_area;
    metal_mass = metal_density*vol;
    
METHODS

   METHOD specify;
      FIX R;
      FIX r;
      FIX h;
      FIX metal_density;
   END specify;

   METHOD values;
      R              := 30.0 ;
      r		     := 10.0;
      h              := 50.0;
      metal_density  := 9.60 ;

   END values;

   METHOD setup;
      RUN specify;
      RUN values;
   END setup;
    
END frustrum_of_cone;

This MODEL is quite straight forward to write. ASCEND uses strong typing; it requires one to declare explicitly the type of each variable using IS_A statements.

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Incidence Graph generated by ASCEND for the model of a frustum of cone.

Partitioned Model for FRUSTUM OF A CONE

Following is a modified version of the Frustum MODEL which breaks down a frustum into two cones : A top cone cut out from a bottom cone.

REQUIRE "atoms.a4l";
MODEL cone;
    (* variables *)
    R,	     
    h,	     	     
    l	     IS_A distance;
    curved_area	IS_A area;
    vol      IS_A volume;
   
    
    (* equations *)
    l = sqrt(h^2 + R^2);
    vol = 3.1416*h*R^2/3;
    curved_area = 3.1416*l*R;
METHODS
    METHOD specify;
        FIX R;
        FIX h;
   END specify;    
END cone;

MODEL partitioned_frustrum_of_cone;

   (* variables *)
    R,
    r,
    h		    IS_A distance;
    l		    IS_A distance;
    curved_area,
    total_area      IS_A area;

    vol             IS_A volume;
    metal_density   IS_A mass_density;
    metal_mass      IS_A mass;

    (* parts *)
    top		    IS_A cone;
    bottom          IS_A cone;
    
    (* specifications *)
    R              = 30.0 {cm};
    r		   = 10.0 {cm};
    h              = 50.0 {cm};
    metal_density  = 9.60 {g/cm^3};

    (* equations *)
    top.R = r;
    top.h = r*h/(R-r);
    bottom.R = R;
    bottom.h = h + top.h;

    l = bottom.l - top.l;
    vol = bottom.vol - top.vol;
    curved_area  = bottom.curved_area - top.curved_area;
    total_area = 3.1416*(R^2 + r^2) + curved_area;
    metal_mass = metal_density*vol;

METHODS

   METHOD specify;
      FIX R;
      FIX r;
      FIX h;
      FIX metal_density;
   END specify;

   METHOD values;
      R              := 30.0 {cm};
      r		     := 10.0 {cm};
      h              := 50.0 {cm};
      metal_density  := 9.60 {g/cm^3};

   END values;

   METHOD setup;
      RUN specify;
      RUN values;
   END setup;
   
END partitioned_frustrum_of_cone;