modelGeneric

Parameters

TypeNameDefaultDescription
IntegernV4# of discrete axial volumes
IntegernSurfaces1Number of transfer (heat/mass) surfaces for coolant channel
RealnPins1# of solid media pins
RealnPins_nonFuel0# of pins non-fueled pins (e.g., control rod guides)
Integer[nRegions]nRsfill(3, nRegions)# nodes in each region's radial direction
Internal Interface
IntegernRegions1# of regions in solid media

Components

TypeNameDefaultDescription
SI.Lengthdimension4*crossArea/perimeterCharacteristic dimension (e.g., hydraulic diameter)
SI.AreacrossAreapi*dimension*dimension/4Cross-sectional flow areas
SI.Lengthperimeter4*crossArea/dimensionWetted perimeters
SI.Lengthlength1.0Pipe length
SI.Heightroughness2.5e-5Average heights of surface asperities
SI.Area[nSurfaces]surfaceArea{2*pi*rs_outer[end]*length*nPins}Area per transfer surface
SI.Angleangle0.0Vertical angle from the horizontal (-pi/2 < x <= pi/2)
SI.Lengthdheightlength*sin(angle)Height(port_b) - Height(port_a) distributed by flow segment
SI.Lengthheight_a0Elevation at port_a: Reference value only. No impact on calculations.
SI.Length[nRegions]rs_outer{if i == 1 then 0.01 else rs_outer[i - 1] + 0.001 for i in 1:nRegions}Outer radius of each region {r_outer[1],...,r_outer[n]}