Studies of Parallelism and Performance Enhancements of Computing View Factor for Satellite Thermal Analysis

- Journal title : Journal of the Korean Society for Aeronautical & Space Sciences
- Volume 43, Issue 12, 2015, pp.1079-1088
- Publisher : The Korean Society for Aeronautical & Space Sciences
- DOI : 10.5139/JKSAS.2015.43.12.1079

Title & Authors

Studies of Parallelism and Performance Enhancements of Computing View Factor for Satellite Thermal Analysis

Kim, Min-Ki;

Kim, Min-Ki;

Abstract

Parallelism and performance enhancement of calculating view factors in KSDS developed by KARI is introduced in this paper. View factor is an essential parameters of radiation thermal analysis for a spacecraft, and the amount of computation of them is not negligible. Especially, independent integration of view factors at each position of the orbit because the relative displace between solar panel and main body of a satellite varies with the position on the orbit. This paper introduces a range of parallelism of computing view factor and their performance, detection of obstructions by spatial search algorithm based on KD-Tree, and the reduction of the calculation of view factors of a satellite with relative motion between solar panel and main body, called updating fractional view factor matrix, for satellite thermal analysis.

Keywords

KSDS;View Factor;OpenMP;KD-Tree;Updating Partial View Factor Matrix;

Language

Korean

References

1.

Y.H.Kim, I.H.Choi, Y.H.Jeon, B.S.Hyun, H.Y.Jeon and J.H.Kim, "Functions of Pre/Post Processor using Finite Element Method," KSAS 2014 Spring Conference, Apr. 2014, pp. 944-947.

2.

S.C.Lee, M.K.Kim, H.D.Kim, D.Y.Ryu, E.S.Sim, S.H.Yoon, and Y.H.Kim, "Development of Attitude Control Module for KARI Satellite Design Software," KSAS 2015 Spring Conference, Apr. 2015, pp. 787-791.

3.

M.K.Kim, B.S.Hyun, J.H.Kim, J.M.Woo, J.Y.Cho, " Functionalities and Verification of the Satellite Thermal Analysis Solver Based on Finite Element Method," KSAS 2014 Spring Conference, Apr. 2014, pp. 948-951.

4.

J.J.Lee, B.S.Hyun, J.H.Choi and T.K.Kim, "Introduction and Verification about Solver of View Factor and External Heat Source in KSDS," KSAS 2014 Spring Conference, pp. 952-955.

5.

C.H.Lee, J.H.Lee and Y.S.Cheon, "Introduction of KSDS Contamination Analysis and Its Verification," KSAS 2014 Spring Conference, Apr. 2014, pp. 956-959.

6.

K.J.Park, Y.Y.Park, J.R,Lim and H.T.Choi, "AOCS Library Development for KARI Satellite Design System," KSAS 2014 Spring Conference, Apr. 2014, pp. 1004-1007.

7.

Y.J.Cho, S.K.Lee and J.H.Seon, "Development and Verification of Calculation Program for Total Dose and Solar Cell Degradation by Space Radiation," KSAS 2014 Spring Conference, Apr. 2014, pp. 1008-1011.

8.

W.K.Lim, S.B.Ryu, J.P.Kim, S.I.Lee, S.K.Kim and S.K.Lee, "KSDS S Band Communication Link Analysis Solver Function and Verification for Low Earth Orbit and Geostationary Orbit," KSAS 2014 Spring Conference, Apr. 2014, pp. 1012-1015.

9.

J.C.Koo and J.B.Jang, "Function and Verification of the Power Analysis Solver in KARI Satellite Design System," KSAS 2014 Spring Conference, Apr. 2014, pp. 1016-1020.

10.

http://ipsap.snu.ac.kr

11.

K.J.Park, Y.J.Park, J.Y.Cho, C.Y.Park and S.J.Kim, "Design Optimization of a Wing Structure under Multi Load Spectra using PSO algorithm," Journal of KSAS, Vol. 40, No. 11, Nov. 2012, pp. 963-971.

12.

M.K.Kim, J.H.Kim, C.Y.Park and S.J.Kim, "Parallelization of Multifrontal Solution Method for Shared Memory Architecture," Journal of KSAS, Vol. 40, No. 11, Nov. 2012, pp. 972-978.

13.

M.K.Kim and S.J.Kim, "An Out of Core Linear Direct Solution Method for Large Scale Structural Analysis," Journal of KSAS, Vol. 42, No. 6, Jun. 2014, pp. 445-452.

14.

M.K.Kim, "A Study of Temperature Transfer Algorithm of Distinguished Grids between Thermal and Structural Mesh for Satellite Design", Journal of KSAS,, Vol. 43, No. 9, Sep. 2015, pp. 805-813.

15.

D.K.Kim, K.Y.Han, J.H.Choi, J.J.Lee and T.K.Kim, "Study on Radiation View Factor Calculation by Mesh Subdivision Method Considering Solid Angle", KSAS 2013 Fall Conference, Nov. 2013, pp. 745-748.

16.

Satellite System Virtual Design Software Development, KARI Research Report, 2013, pp. 33-41.

17.

J.H.Choi, J.H.Kim, I.H.Jung, P.H.Lee, and T.K.Kim, "Study on IR Signature Characteristics for different Transmittance over the Korean South Sea during Summer and Winter Seasons," Journal of the Korea Institute of Military Science and Technology, Vol. 13, No. 2, Apr. 2010, pp. 320-327.

18.

Gilmore, D.G., "Spacecraft Thermal Control Handbook," American Institute of Aeronautics and Astronautics, Vol. 1, 2002, pp. 36-47.

19.

Allen, R.C., Keith, R.J. and Eric, A.M., 1995, "Automated Radiation Modeling for Vehicle Thermal Management," SAE International Congress and Exposition, 1995.

20.

Radtherm IR, ThermoAnalytics, http://www.thermoanalytics.com

21.

Lovin, J.K., Lubkowitz, A.W., "User's Manual for RAVFAC", NASA Contractor Report, 1969.

22.

Modest, M.F., "Radiative Heat Transfer", Academic Press, 2003, pp. 762-778.

23.

http://www.openmp.org

24.

M.K.Kim, "Parallelization and Performance Enhancement of Radiation Exchange Coefficient Calculation Program in the KARI Satellite Design Software" KSAS 2014 Fall Conference, Nov. 2014, pp. 1528-1531.

25.

http://www.flipcode.org/archives/Raytracing_Topics_Techniques-Part_7_Kd-Trees_and_More_Speed.shtml

26.

http://www.flipcode.org/archives/raytracer7.zip

27.

Ingo Wald, "Realtime Ray Tracing and Interactive Global Illumination", Ph.D Thesis, Saarland University, 2004.