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NEA-0303 HEATRAN.

HEATRAN, 2-D Heat Diffusion for X-Y or R-Z Geometry with Heat Transfer Across Gaps

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1. NAME OR DESIGNATION OF PROGRAM:  HEATRAN.
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2. COMPUTERS
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Program name Package id Status Status date
HEATRAN NEA-0303/01 Tested 01-NOV-1978

Machines used:

Package ID Orig. computer Test computer
NEA-0303/01 IBM 370 series IBM 370 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

HEATRAN solves the heat diffusion equation over a two dimensional area of any shape or material distribution. Provision is made for transfer across narrow gaps. Linear boundary conditions, and in addition edge cooling by fourth power radiation, and forced and natural convection, are allowed. X-y and r-z geometries are both available.
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4. METHOD OF SOLUTION

Finite difference equations are set up for triangular elements. These elements may be any size or shape thus allowing real flexibility in the representation of irregular shapes. The equations are solved directly using the routine SPARSE.  Temperatures are calculated at the nodes (corners of triangles). Steady state solutions are obtained in a single step.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:  1100 nodes.
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6. TYPICAL RUNNING TIME

From about 30 secs. for 200 nodes to 12 mins.for 1000 nodes depending on complexity, equation bandwidth, etc.
Non-linear cases (radiation, etc.) need additional time for iteration. Transients :- rather less than the above figures per time step.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED AND AUXILIARY PROGRAMS

TRESS, a stress programme with similar geometry. TRG 1813 (R)
THREAT a 3-D development of HEATRAN.
PERCON a channel performance programme using "quasi-3-D" facilities  from HEATRAN.
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9. STATUS
Package ID Status date Status
NEA-0303/01 01-NOV-1978 Tested at NEADB
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10. REFERENCES

- W.D. Collier:
  "HEATRAN, A Finite Element Code for Heat Transfer Problems"
  TRG Report 1807(R).
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11. MACHINE REQUIREMENTS

  (i) core:  175 k-bytes
(ii) data volumes:  4 work files on disc or tape
(iii) CALCOMP 565 incremental graph plotter
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0303/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  RIOS on ICL 4-70,OS 360/65 on IBM 360/65.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR

         W.D. Collier
         Computer Section
         C.T.S.
         Risley, U.K.
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16. MATERIAL AVAILABLE
NEA-0303/01
File name File description Records
NEA0303_01.001 INFORMATION 2
NEA0303_01.002 SOURCE PROGRAM (F4,EBCDIC) 8610
NEA0303_01.003 RISLEY ROUTINES (F4,EBCDIC) 1784
NEA0303_01.004 RISLEY ROUTINES (ASSEMBLER,EBCDIC) 614
NEA0303_01.005 SETMAT,SPARSE,SPARX,SPARE (F4,EBCDIC) 653
NEA0303_01.006 OVERLAY CARDS 98
NEA0303_01.007 DD CARDS FOR THE EXECUTION 22
NEA0303_01.008 SAMPLE PROBLEM INPUT DATA (CASE 1) 15
NEA0303_01.009 SAMPLE PROBLEM INPUT DATA (CASE 2) 35
NEA0303_01.010 SAMPLE PROBLEM INPUT DATA (CASE 3) 120
NEA0303_01.011 SAMPLE PROBLEM INPUT DATA (CASE 4) 55
NEA0303_01.012 SAMPLE PROBLEM PRINTED OUTPUT (CASE 1) 105
NEA0303_01.013 SAMPLE PROBLEM PRINTED OUTPUT (CASE 2) 135
NEA0303_01.014 SAMPLE PROBLEM PRINTED OUTPUT (CASE 3) 1181
NEA0303_01.015 SAMPLE PROBLEM PRINTED OUTPUT (CASE 4) 1472
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17. CATEGORIES
  • H. Heat Transfer and Fluid Flow

Keywords: boundary conditions, diffusion equations, finite element method, heat transfer, r-z, triangular configuration, two-dimensional, x-y.