Thermal design method for structures and optimum numerical calcu

Details Thermal design method for structures and optimum numerical calcu Thermal design method for structures and optimum numerical calcu

1995-10-20

1997-12-16

Teska, Kevin J.

Boots, shoes, and leggings

364509, 395500, G06F 1710

Patent

active

056992840

ABSTRACT:
A design method for structures is invented, taking into account the effects of fluid temperature fluctuations, comprising: numerical calculations of time-averaged solutions for the motion equation and energy equation for fluids; a Process 1 in which the low-cycle components of the temperature fluctuations occurring on the surface of a tentatively designed structure are analyzed; a Process 2 in which an artificial high-cycle component is superimposed on the low-cycle component of the temperature fluctuations; numerical calculations of accurate solutions for the motion equation and the energy equation for fluids, with the new temperature fluctuations obtained from Process 2 serving as boundary conditions; and a Process 3 in which the high-cycle components of temperature fluctuations occurring at structure surfaces are analyzed. Process 1 and Process 3 are performed by a numerical calculation apparatus equipped with a control section to control time step sizes.

REFERENCES:
patent: 5311447 (1994-05-01), Bonne
patent: 5524084 (1996-06-01), Wang et al.
patent: 5594671 (1997-01-01), Chen et al.
patent: 5606517 (1997-02-01), Traub et al.
Nuclear Engineering and Design, vol. 150, No. 1, Sep. 1994, "Investigation of Turbulence Modelling in Thermal Stratification Analysis", T. Muramatsu et al., pp. 81-93.
JSME International Journal, Series II, vol. 35, No. 4, Nov. 1992, "Thermal Striping Temperature Fluctuation Analysis Using the Algebraic Stress Turbulence Model in Water and Sodium", T. Muramatsu et al., pp. 486-496.

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