ESTS0790 PROGRAM-K. (Abstract last modified 27-DEC-1995)
1.
NAME OR DESIGNATION OF PROGRAM - PROGRAM-K. 2.
COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -
To request or retrieve programs click on the one of the active versions below.
A password and special authorization is required. Explanation of the status codes.
Machines used:
Package-ID Orig.Computer Test Computer
ESTS0790/01 CDC 7600 PC-80486
3.
DESCRIPTION OF PROGRAM OR FUNCTION - PROGRAM K is a design code for transonic airfoils, turbine or compressor blades.
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METHOD OF SOLUTION - The design program results from the ability to solve the partial differential equations of two-dimensional inviscid gas dynamics and analytic continuation into the domain of two independent complex characteristic coordinates. The domain of integration is mapped conformally onto the unit circle in the plane of one of these coordinates. On the circle it is possible to formulate a boundary value problem for the stream function that is well-posed even in the case of transonic flow. Two boundary value problems are solved by means of the fast Fourier Transform and complex extension. Thus, a procedure is developed for the calculation of an airfoil on which the speed q is prescribed as a function of arc length s. For subsonic flow an exact solution of this non-linear problem is obtained. For the transonic case a shockless flow results which assumes the assigned subsonic values of the speed q exactly but the resulting supersonic values of speed are near the given values.
5.
RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - 6.
TYPICAL RUNNING TIME - The running time for the test case is approximately 290 seconds on the CDC6600. NESC executed the sample problem in 117 CPU seconds on a CDC CYBER175.
7.
UNUSUAL FEATURES OF THE PROGRAM - 8.
RELATED AND AUXILIARY PROGRAMS - PROGRAM H was developed for the analysis of transonic airfoils with a turbulent boundary layer correction.
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STATUS 10.
REFERENCES - 11.
MACHINE REQUIREMENTS - 132,000 (octal) words are required to execute the sample problem.
12.
PROGRAMMING LANGUAGE(S) USED - 13.
OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED - NOS 1.4. 14.
OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS - 15.
NAME AND ESTABLISHMENT OF AUTHORS - 16.
MATERIAL AVAILABLE - 17.
CATEGORIES - Keywords: FLOW MODELS, FLOW SHEETS, FOILS, STEAM TURBINES, SUBSONIC FLOW, TURBINES
Program-name Package-ID Status
PROGRAM-K ESTS0790/01 Tested
ESTS0790/01:
NEA-DB ran the test case included in this package on a
66MHz PC/80486 in 33 seconds.
ESTS0790/01: 27-DEC-1995 Tested at NEADB
ESTS0790/01:
ESTS0790/01:
The program was installed at the NEA-DB on a DELL 466/L PC/80486(66MHz) with 16MB of RAM.
ESTS0790/01: FORTRAN-IV
ESTS0790/01:
The program was installed at the NEA-DB under MS-DOS 6.20. The source was compiled with the Microsoft FORTRAN optimizing compiler version 5.10.
ESTS0790/01:
ESTS0790_01.001 Information file 438 records
ESTS0790_01.002 Author's information file 192 records
ESTS0790_01.003 Source file #1 1827 records
ESTS0790_01.004 Source file #2 1835 records
ESTS0790_01.005 Source file #3 1524 records
ESTS0790_01.006 MAKEFILE to compile and link 17 records
ESTS0790_01.007 PROGRAM K executable 0 records
ESTS0790_01.008 Sample - TAPE3 input file 25 records
ESTS0790_01.009 Sample - TAPE7 input file 15 records
ESTS0790_01.010 Sample - TAPE4 output file 213 records
ESTS0790_01.011 Sample - TAPE3 output file 469 records
ESTS0790_01.012 DOS file-names 11 records
- H. Heat Transfer and Fluid Flow
- I. Deformation and Stress Distributions, Structural Analysis and Engineering Design Studies
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