13.4. Input-Output Description

A listing of CLAP-related input variables is given in Table 13.4.1 as an aid in preparing or modifying SAS input decks. Additionally, the input items on this list should be rechecked when problems are encountered in the running of SAS cases with cladding motion. This list contains all input items used directly by the following CLAP subroutines: TSCLD1, TSCLD2, SODFRC and DENSIT and, in addition, input items used to initiate CLAP and to calculate reactivity effects due to cladding motion (in subroutine FEEDBK).

The CLAP output appears with both the main full printout and the boiling printout. A sample output is shown in Figure 13.4.1. The output labels are generally self-explanatory. The Fortran variable and units corresponding to each output item are given in Table 13.4.2.

Table 13.4.1 Listing of CLAP-Related Input Parameters

Symbol

Reference Eq. No.

Reference

Block

Location

Recommended Values

\(T_{\text{ref}}\)

Eq. (13.2-46)

TR

13

419

1700 K

\(T_{\text{m}}\)

TESOL*

13

810-812

1700 K [13-7]

\(\lambda^{o}\)

Eq. (13.2-51)

UEMELT

13

816-818

2.703⨉105 J/kg [13-7]

\(\lambda^{o}\)

Eq. (13.2-51)

UEMELT

13

816-818

2.703⨉105 J/kg [13-7]

\(C_{\text{ps}}\)

Eq. (13.2-49)

CE

13

1070-1072

690.1 J/kg K [13-7]

ICLADV

51

17

ICLADB

51

85

1

IDCLGO

51

125

0

IDCLSP

51

126

0

IDCLDE

51

127

0

\(W_{\text{j}}\)

Eq. (13.3-62)

CLADRA

62

160-183

\(\rho_{\text{s}}^{o}\)

Eq. (13.2-46)

DENSS

63

35

7.256⨉103 kg/m3† [13-7]

\(C_{1}, C_{2}, C_{3}\)

Eq. (13.2-33)

C1, C2, C3

64

3-5

Eq. (13.2-33) [13-8]

\(\text{AFRV,BFRV}\)

Eq. (13.2-5)

AFRV, BFRV

64

168, 169

0.316, -0.25

\(\rho_{\text{c}}^{o}\)

Eq. (13.2-47)

DENS

65

3

6.98⨉103 kg/m3† [13-7]

\(\beta\)

Eq. (13.2-46)

AE

65

4

2.3⨉10-5/K [13-7]

\(C\)

Eq. (13.2-47)

RHOCD

65

5

8.3⨉10-5/K [13-7]

\(\mu_{\text{m}}\)

Eq. (13.2-21)

VISMC

65

6

6.42⨉10-3 Pa-s [13-7]

\(\mu_{\text{T}}\)

Eq. (13.2-22)

VISTR

65

7

1⨉104 Pa-s [13-3]

\(\mu_{\text{s}}\)

Eq. (13.2-23)

VISSC

65

8

1⨉104 Pa-s [13-3]

\(q\)

Eq. (13.2-22)

XVISC

65

9

0.5

\(b_{\text{f}}\)

Eq. (13.2-19)

CLADFR

65

10

0.02 [13-3]

\((\text{Re})_{\text{break}}\)

Eq. (13.2-18)

REBRK

65

11

  1. [13-3]

\(\varepsilon\)

Eq. (13.2-10)

GMULTF

65

12

75.0 [13-5]

\(\alpha_{\text{crit}}\)

Eq. (13.2-10)

ALPHCR

65

13

0.0 [13-5]

\((\text{fps})_{\text{o}}\)

Eq. (13.2-12)

FPSO

65

14

0.3s

\(x\)

Eq. (13.2-12)

EXPFPS

65

15

3.0

\(\theta\)

Eq. (13.3-46)

CLSTHR

65

17

1.0

\(a\)

Eq. (13.2-21)

AVISC

65

20

5492 K [13-7]

\(c_{\text{pc}}\)

Eq. (13.2-50)

CPC

65

21

621.7 J/kg K [13-7]

*Orginally TME, but TME is now set equal to the solidus temperature TESOL.

†Evaluated at the melting temperature of 1700 K.

Table 13.4.2 Summary of CLAP Output Items

Item

Symbol

FORTRAN Variable

Units

CLAP Time Step Count

\(n\)

ICOUNT

Axial Coolant Mode

\(j\)

J

Main Axial (Nodal) Elevation

\(z_{\text{m,j}}\)

ZFM

m

Refrozen Cladding Thickness

\(2\Delta r_{\text{s}}\)

RCLAD1

m

Moving Cladding Thickness

\(2\Delta r_{\text{c}}\)

TCLAD1

m

Intact Cladding Temperature

\(T_{\text{i}}\)

TCLAV

K

Refrozen Cladding Temperature

\(T_{\text{s}}\)

TEMFS1

K

Moving Cladding Temperature

\(T_{\text{c}}\)

TEMMC1

K

Moving Cladding Velocity

\(V_{\text{c}}\)

CVEL1

m/s

Coolant Flow Area

\(A_{\text{v}}\)

AREAC1

m2

Internal Flag (=1 in molten zone, =0 otherwise)

LVEL

../../_images/image612.png

Figure 13.4.1 Sample CLAP Output