ENERGY SCIENCE AND TECHNOLOGY SOFTWARE CENTER
U.S. Department of Energy FAQ | Widget | Site Map | Contact Us
Find the latest in DOE-sponsored Scientific and Technical Software
Bookmark and Share

SOFTWARE ABSTRACT

Request Information    Back

PACKAGE ID000214D078000 ASPEN
KWIC TitleAdvanced System for Process Engineering 
AUTHORSK.E. Williams; L.S. Saus; P.A. Regenhardt
LIMITATION/AUDIENCE CODEUNL/UNL
COMPLETION DATE02/01/1992 
PUBLICATION DATE02/01/1992 
DESCRIPTIONASPEN (Advanced System for Process Engineering) is a state of the art process simulator and economic evaluation package which was designed for use in engineering fossil energy conversion processes. ASPEN can represent multiphase streams including solids, and handle complex substances such as coal. The system can perform steady state material and energy balances, determine equipment size and cost, and carry out preliminary economic evaluations. It is supported by a comprehensive physical property system for computation of major properties such as enthalpy, entropy, free energy, molar volume, equilibrium ratio, fugacity coefficient, viscosity, thermal conductivity, and diffusion coefficient for specified phase conditions; vapor, liquid, or solid. The properties may be computed for pure components, mixtures, or components in a mixture, as appropriate. The ASPEN Input Language is oriented towards process engineers. 
PACKAGE CONTENTSSoftware Abstract; Media Directory; Media includes Source Code; DOE/MC/14521-1942; DOE/MC/14521-1943; DOE/MC/16481-1201 Vols. 1 & 2; DOE/MC/16481-1203 Vols. 1 & 2; Media Directory;\ 1 CD Rom 
SOURCE CODE INCLUDED?
MEDIA QUANTITY
METHOD OF SOLUTIONASPEN uses a preprocessor type of structure that generates a main calling program from a user input file in the ASPEN Input Language. The major sections and flow of information in the ASPEN program are as follows. The input translator processes the user input file, enters all data regarding the process into a problem data file, and generates the main FORTRAN program containing the necessary model calls. A physical property initialization subprogram, which depends on the property models used in the simulation, is generated also. These programs are then compiled and linked with user program and ASPEN libraries to create a custom simulation program for the problem. The simulation program reads input data from the problem data file and after performing any calculations required writes a new problem data file if necessary. The system report writer can then be used to produce reports from this file. ASPEN is a file oriented system. Executive programs written in the machine's operating system language control the execution of the various programs and the creation and selection of files used. 
COMPUTERDEC VAX11/780 
OPERATING SYSTEMSVMS 4.2 
UNIQUE FEATURESASPEN utilizes a plex data structure. Information is stored in blocks of contiguous locations. These are created dynamically from a pool of free storage. They may be of any length and may contain integer values, real values, or character strings. The plex handling capability is provided by a group of subroutines called the Data Management System. 
OTHER PROG/OPER SYS INFOThe DEC VAX version contains 1952 files of which 1779 are of type FOR (FORTRAN). The remainder are of types INP, DAT, COM, DOC, INF, TMP, MSG, MAR, PG, SPL, OUT, SMP, XRF, and HLP. These files are either used during system generation or represent output files generated by the system for use in checking for correct implementation. The command procedures (COM files) are designed for use with VAX/VMS version 4.0 or later. The DEC VAX version contains the ASPEN Graphics System. This system uses calls to subroutines to generate actual terminal control sequences rather than formal meta code. While eliminating the need for a separate device driver for each different device, this necessitates editing of some of the code for addition of new devices. The devices currently supported are: Tektronix 401x, 411x, 410x, and 4027; AED767; SELANAR adapted VT-100; ZETA11 and 34 plotters, and the Varian printer-plotter. 
REFERENCESASPEN User Manual, Volumes 1 and 2, Massachusetts Institute of Technology, DOE/MC/16481-1203, May 1982; K.E. Williams, VAX/ASPEN Installation Guide, DOE/MC/14521-1942, October 1985; K.E. Williams, L.S. Saus, and P.A. Regenhardt, METC/VAX/IBM Guide to ASPEN, DOE/MC/14521-1943, October 1985; ASPEN, NESC No. 979.VX11D, ASPEN VAX/VMS Version Tape Description, National Energy Software Center Note 86-48, May 31,1986\ ASPEN System Administrator Manual, Volumes 1 and 2, Massachusetts Institute of Technology, DOE/MC/16481-1201, May 1982; ASPEN Technical Reference Manual, Volumes 1 and 2, Massachusetts Institute of Technology, DOE/MC/16481-1202, May 1982; ASPEN/CMS Installation Manual, Massachusetts Institute of Technology, November 1, 1981. 
HARDWARE REQSThe DEC VAX version requires approximately 210K blocks of disk storage and a paging file quota of 16,362 for the system account and 20K blocks of disk storage with an overdraft of 20K blocks, a file open quota of 40, and a paging file quota of 8,192 (4 megabytes virtual machine size) for each user account. 
TIME REQUIREMENTSExecution time is entirely dependent on the simulation to be performed. The longest running sample problem requires approximately 9 CPU minutes on a DEC VAX11/780. 
ABSTRACT STATUSReleased As-Is 2-13-1992 
SPONSORDOE/FE 
RESEARCH ORGFederal Energy Technology Center, Morgantown 
PACKAGE TYPEAS-IS 

Request Information    Back