NEA-0761 RECTC.

RECTC/RECTCF, 2nd Order Elliptical Partial Differential Equation, Arbitrary Boundary Conditions

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: RECTC (ALGOL 60 version) /
RECTCF (FORTRAN IV version).

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2. COMPUTERS

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Program name	Package id	Status	Status date
RECTCF	NEA-0761/02	Tested	19-MAY-1983

Machines used:

Package ID	Orig. computer	Test computer
NEA-0761/02	IBM 370/168	IBM 370/168

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3. DESCRIPTION OF PROBLEM OR FUNCTION

A general linear elliptical second order partial differential equation on a rectangle with arbitrary boundary conditions is solved.

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4. METHOD OF SOLUTION: Multi-grid iteration.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

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6. TYPICAL RUNNING TIME: First example in report required 1.1 CPU seconds.

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7. UNUSUAL FEATURES OF THE PROGRAM: Fast solution algorithm.

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
NEA-0761/02	19-MAY-1983	Tested at NEADB

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10. REFERENCES:

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11. MACHINE REQUIREMENTS

Storage requirements are about 75 kbytes for the first example in the report, but is problem dependent.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0761/02	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED: Standard.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHOR

W. Hackbusch
Institut fuer Informatik and Praktische Mathematik
Christian-Albrechts-Universitaet
Olshausenstr. 40
D-2300 KIEL 1
F.R. Germany

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16. MATERIAL AVAILABLE

NEA-0761/02

File name	File description	Records
NEA0761_02.003	RECTCF INFORMATION FILE	49
NEA0761_02.004	RECTCF SOURCE (FORTRAN-4)	1193
NEA0761_02.005	RECTCF OUTPUT OF TEST CASE	92

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17. CATEGORIES

P. General Mathematical and Computing System Routines

Keywords: differential equations, partial differential equations.