1. SAMPLE PROBLEM MATRA Input Preparation

2. SAMPLE PROBLEM – GE 3X3 2-PHASE FLOW TEST BUNDLE
Cross section geometry of TS
Axial geometry and spacer grids
Test information
Parameter
Value
Heated length, inch
Rod diameter, inch
Rod pitch, inch
Rod-to-wall gap, inch
Radial power distribution
Axial power distribution
Pressure loss coefficient
- Spacer grid form loss
- Rod friction factor
Pressure, psia
TS inlet enthalpy, Btu/lbm
TS inlet mass flux, Mlb/hr-ft2
TS average heat flux, MBtu/hr-ft2 72
0.570
0.738
0.135
Uniform
1.0
0.184 Re-0.2
1000
392.7
0.53
0.225

3. INPUT CARD DESCRIPTION
Requirements of MATRA Input Cards and Card Groups
Group
No.
Description
Case
First
Subsequent –
Initial card
Required
Not required
Case control card 1
Fluid properties
Optional 2
Friction factor, heat transfer coefficient, and two-phase flow correlations 3
Axial heat flux distribution 4
Channel layout and dimensions 5
Channel area variation 6
Gap spacing variation 7
Wire wrap and grid spacer information 8
Rod layout, dimensions, and properties 9
Calculation control 10
Lateral transport models 11
Operating conditions and transient forcing functions 12
Output display options

4. INITIAL & CASE CONTROL CARD

5. CARD-1: FLUID PROPERTY

6. CARD-2: FRICTION, HTC, TWO-PHASE FLOW CORRELATIONS

7. CARD-3: AXIAL HEAT FLUX DISTRIBUTION
Ex) cosine distribution

8. CARD-4: CHANNEL LAYOUT AND DIMENSION
AC (inch2)
PW (inch)
PH (inch)
Ch.-1
0.0391
0.558
0.224
Ch.-2
0.1824
1.633
0.895
Ch.-3
0.1447

9. CARD-7: GRID SPACER INFORMATION

10. CARD-8: ROD LAYOUT, DIMENSION, AND PROPERTY

11. CARD-9: CALCULATION CONTROL

12. CARD-10: LATERAL TRANSPORT MODEL

13. CARD-11: OPERATING CONDITION & TRANSIENT FORCING FUNCTIONS

14. CARD-12: OUTPUT DISPLAY OPTION

15. MATRA INPUT FOR GE 3X3 TEST BUNDLE

16. SAMPLE PROBLEM MATRA Output

17. ITERATION RESULTS

18. CHANNEL RESULTS – CHANNEL EXIT SUMMARY

19. CHANNEL RESULTS – BUNDLE AVERAGE

20. CHANNEL RESULTS – FOR EACH CHANNEL

21. CROSSFLOW RESULTS

22. ROD RESULTS
Results when fuel temperature calculation option was selected
(Card 8, N3≠0)

23. CHF SUMMARY RESULTS