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Title: ATHOS: a computer program for thermal-hydraulic analysis of steam generators. Volume 3. User's manual. [PWR]

Abstract

ATHOS (Analysis of the Thermal Hydraulics of Steam Generators) is a computer code developed by CHAM of North America Incorporated, under the contract RP 1066-1 from the Electric Power Research Institute, Palo Alto, California. ATHOS supersedes the earlier code URSULA2. ATHOS is designed for three-dimensional, steady state and transient analyses of PWR steam generators. The current version of the code has been checked out for: three different configurations of the recirculating-type U-tube steam generators; the homogeneous and algebraic-slip flow models; and full and part load operating conditions.

Authors:
; ; ;
Publication Date:
Research Org.:
CHAM of North America, Inc., Huntsville, AL (USA)
OSTI Identifier:
6671406
Report Number(s):
EPRI-NP-2698-CCM-Vol.3
ON: DE83900755
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of document are illegible
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; COMPUTER CODES; A CODES; PWR TYPE REACTORS; STEAM GENERATORS; HEAT TRANSFER; HYDRAULICS; TWO-PHASE FLOW; BOILERS; ENERGY TRANSFER; FLUID FLOW; FLUID MECHANICS; MECHANICS; REACTORS; VAPOR GENERATORS; WATER COOLED REACTORS; WATER MODERATED REACTORS 210200* -- Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled

Citation Formats

Singhal, A.K., Keeton, L.W., Przekwas, A.J., and Weems, J.S.. ATHOS: a computer program for thermal-hydraulic analysis of steam generators. Volume 3. User's manual. [PWR]. United States: N. p., 1982. Web.
Singhal, A.K., Keeton, L.W., Przekwas, A.J., & Weems, J.S.. ATHOS: a computer program for thermal-hydraulic analysis of steam generators. Volume 3. User's manual. [PWR]. United States.
Singhal, A.K., Keeton, L.W., Przekwas, A.J., and Weems, J.S.. 1982. "ATHOS: a computer program for thermal-hydraulic analysis of steam generators. Volume 3. User's manual. [PWR]". United States. doi:.
@article{osti_6671406,
title = {ATHOS: a computer program for thermal-hydraulic analysis of steam generators. Volume 3. User's manual. [PWR]},
author = {Singhal, A.K. and Keeton, L.W. and Przekwas, A.J. and Weems, J.S.},
abstractNote = {ATHOS (Analysis of the Thermal Hydraulics of Steam Generators) is a computer code developed by CHAM of North America Incorporated, under the contract RP 1066-1 from the Electric Power Research Institute, Palo Alto, California. ATHOS supersedes the earlier code URSULA2. ATHOS is designed for three-dimensional, steady state and transient analyses of PWR steam generators. The current version of the code has been checked out for: three different configurations of the recirculating-type U-tube steam generators; the homogeneous and algebraic-slip flow models; and full and part load operating conditions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1982,
month =
}

Technical Report:
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  • ATHOS (Analysis of the Thermal Hydraulics of Steam Generators) is a computer code developed by CHAM of North America Incorporated, under the contract RP 1066-1 from the Electric Power Research Institute, Palo Alto, California. ATHOS supercedes the earlier code URSULA2. ATHOS is designed for three-dimensional, steady-state and transient analyses of PWR steam generators. The current version of the code has been checked out for: three different configurations of the recirculating-type U-tube steam generators; the homogeneous and algebraic-slip flow models; and full and part load operating conditions. The description of ATHOS is divided into the following four volumes: Volume 1, Mathematicalmore » and Physical Models and Methods of Solution; Volume 2, Programmer's Manual; Volume 3, User's Manual; and Volume 4, Applications. The code's possible uses, capabilities and limitations are described in Volume 1 as well as in Volume 3.« less
  • Purpose of this volume is to consolidate the description of all code qualification and verification applications. These have been divided into five categories: code checkout studies, parametric calculations, simulations of small-scale experiments, model steam generator simulations, and full-scale operating steam generator simulations. Findings can be summarized as follows: Agreement with available experimental data is generally good. Agreement with experimental data is always better when employing the algebraic-slip (rather than homogeneous) flow model. Consistent and plausible trends are found in all parametric studies undertaken. Agreement with experiment is generally not as good for low-power-levl cases (less than 50%). This indicates thatmore » further study of empirical correlations is needed, particularly for low-power-level calculations. Several model improvements and further developments are identified and suggested for future implementation.« less
  • ATHOS (Analysis of the Thermal Hydraulics of Steam Generators) is a computer code developed by CHAM of North America Incorporated, under the contract RP 1066-1 from the Electric Power Research Institute, Palo Alto, California. ATHOS supersedes the earlier code URSULA2. ATHOS is designed for three-dimensional, steady state and transient analyses of PWR steam generators. The current version of the code has been checked out for: three different configurations of the recirculating-type U-tube steam generators; the homogeneous and algebraic-slip flow models; and full and part load operating conditions. The description of ATHOS is divided into four volumes. Volume 1 includes themore » mathematical and physical models and method of solution.« less
  • This is the user's manual for the ATHOS3 computer code. ATHOS3 is a computer code for three-dimensional, steady-state and transient analyses of PWR steam generators. It has been developed by upgrading an earlier code, ATHOS (Analysis of the Thermal Hydraulics of Steam Generators). Both ATHOS and ATHOS3 have been developed by CHAM of North America, Inc., under the contract RP1066-1 from the Electric Power Research Institute. ATHOS3 supercedes ATHOS and all other intermediate versions of the code. ATHOS3 has several additional capabilities, including a much improved and generalized geometry pre-processor module, and has been developed in a fully upwards-compatible mannermore » from the predecessor ATHOS code. For the convenience of new users, the ATHOS3 code is documented in four self-contained volumes, i.e., no reference to the earlier ATHOS volumes is necessary. Furthermore, for the benefit of old (i.e., ATHOS code) users, it may be stated that the new (ATHOS3) documentation has been produced by updating and modifying the earlier documentation.« less
  • This is the programmer's manual for the ATHOS3 code. ATHOS3 is a computer code for three-dimensional, steady-state and transient analyses of PWR steam generators. It has been developed by upgrading an earlier code, ATHOS (Analysis of the Thermal Hydraulics of Steam Generators). The ATHOS3 code is designed for three-dimensional, steady-state and transient analyses of PWR steam generators. ATHOS3 has several additional capabilities, including a much improved and generalized geometry pre-processor module, and has been developed in a fully upwards-compatible manner from the predecessor ATHOS code. For the convenience of new users, the ATHOS3 code is documented in four self-contained volumes,more » i.e. no reference to the earlier ATHOS volumes is necessary. Furthermore, for the benefit of old (i.e. ATHOS code) users, it may be stated that the new (ATHOS3) documentation has been produced by updating and modifying the earlier documentation.« less