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Input file for the hydraulics computation

The hydraulics input file, input_v2.hyd, which fit the above description is given below.

//-----------------------------------------------------------------------------
//1st SEGMENT: GEOMETRY OF THE REACTOR.
//-----------------------------------------------------------------------------
//The number of fuel elements [--].
732

//Elevational data.
//Exit of the downcomer [m].
0.0
//Inlet of the core - the bottom of the core plate [m].
1.0
//Outlet of the core [m].
3.44
//Steam separator inlet [m].
13.44
//Feedwater inlet [m].
13.44
//Water level [m].
14.44
//Separator exit [m].
15.44

//Riser specifications.
//Equivalent diameter of riser pipe [m].
4.7
//Flow cross-sectional area [m^2].
17.6
//Equivalent roughness of riser surfaces (drawn tubing: 1.524e-6m) [m].
1.524e-6

//Steam separator specifications.
//Equivalent diameter [m].
0.154
//Flow cross-sectional area [m^2].
4.078
//Local loss coefficient [---].
3.12
//Equivalent roughness of steam separator surfaces (drawn tubing: 1.524e-6m)
// [m].
1.524e-6

//Downcomer above feedwater sparger specifications.
//Equivalent diameter [m].
1.00
//Flow cross-sectional area [m^2].
18.00
//Local loss coefficient [---].
0.00
//Equivalent roughness of steam separator surfaces (drawn tubing: 1.524e-6m)
// [m].
1.524e-6

//Downcomer specifications.
//Equivalent diameter [m].
1.00
//Flow cross-sectional area [m^2].
8.6
//Local loss coefficient [---].
0.0
//Equivalent roughness of steam separator surfaces (drawn tubing: 1.524e-6m)
// [m].
1.524e-6

//Specifications of lower plenum.
//Equivalent diameter [m].
1.28
//Flow cross-sectional area [m^2].
11.00
//Local loss coefficient [---].
9.20
//Equivalent roughness of steam separator surfaces (drawn tubing: 1.524e-6m)
// [m].
1.524e-6

//Core plate loss coefficient [---].
7.60

//-----------------------------------------------------------------------------
//2nd SEGMENT: FUEL ELEMENT GEOMETRY.
//-----------------------------------------------------------------------------
//The number of fuel rods in the fuel bundle, exclusive water rod(s) [--].
63
//The total number of rods in the fuel bundle, inclusive water rod(s).
64
//The outer radius of the fuel rods in [m].
0.6261e-2
//The pitch of the array of rods [m].
1.626e-2
//The inner dimension of the SQUARE shroud surrounding the fuel rods [m].
0.13404
//The total length (active or non-active) of the fuel bundle [m].
2.44
//The equivalent roughness of the wet surfaces of the fuel bundle (drawn tubing:
//1.524e-6m) [m].
1.524e-6
//The number of spacers along the fuel bundle [--].
5
//The z-coordinates for the placement of the spacers (in ascending
// order!) [m].
0.406   0.813   1.22    1.63    2.03
//The single phase loss coefficients of the spacers [--].
1.38    1.38    1.38    1.38    1.38

//-----------------------------------------------------------------------------
//3rd SEGMENT: OTHER SPECIFICATIONS.
//-----------------------------------------------------------------------------
//System pressure which corresponds to the pressure at the liquid surface above
// the feedwater inlet [Pa].
7.17e6
//Temperature of feedwater [deg.C].
216
//Steam separator carry over (true fraction) [---].
0.001
//Steam separator carry under (true fraction) [---].
0.002

//-----------------------------------------------------------------------------
//4th SEGMENT: REACTOR CORE COMPUTATIONAL GRID SPECIFICATIONS.
//-----------------------------------------------------------------------------
//The average steplength in the grid [m].
0.1
//The number of uniform steplengths which succeed a spacer.
5

//-----------------------------------------------------------------------------
//5th SEGMENT: MODEL PARAMETERS.
//-----------------------------------------------------------------------------
//The length of the spacer pressure pulse [m].
0.05

//-----------------------------------------------------------------------------
//6th SEGMENT: MISCELLANEOUS.
//-----------------------------------------------------------------------------
//Number of grid reductions (13.06.95)
0

 
 

 
 

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