Space Station Active Thermal Control System modelingThe Space Station Active Thermal Control System (ATCS) has been modeled using modified SINDA/SINFLO programs to solve two-phase Thermo-fluid problems. The modifications include changes in several subroutines to incorporate implicit solution which allows larger time step as compared to that for explicit solutions. Larger time step saves computer time but involves larger computational error. Several runs were made using various time steps for the ATCS model. It has been found that for a reasonable approach, three times larger time step as compared to that used in explicit method is a good value which will reduce the computer time by approximately 50 percent and still maintain the accuracy of the output data to within 90 percent of the explicit values.
Document ID
19880035122
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hye, Abdul (Lockheed Engineering and Management Services Co., Inc. Houston, TX, United States)
Lin, Chin H. (NASA Johnson Space Center Houston, TX, United States)