Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
권호 표지
DOI QR코드

DOI QR Code

STUDY ON HEAT TRANSFER CHARACTERISTICS OF THE ONE SIDE-HEATED VERTICAL CHANNEL WITH INSERTED POROUS MATERIALS APPLIED AS A VESSEL COOLING SYSTEM

  • KURIYAMA, SHINJI (Graduate School of Medicine and Engineering, Department of Education, Mechanical Systems Engineering, University of Yamanashi) ;
  • TAKEDA, TETSUAKI (Graduate School of Engineering, Department of Mechanical Engineering, University of Yamanashi) ;
  • FUNATANI, SHUMPEI (Graduate School of Engineering, Department of Mechanical Engineering, University of Yamanashi)
  • Received : 2015.03.08
  • Accepted : 2015.06.15
  • Published : 2015.10.25
⟨ Previous Next ⟩

Abstract

In the very high temperature reactor (VHTR), which is a next generation nuclear reactor system, ceramics are used as a fuel coating material and graphite is used as a core structural material. Even if a depressurization accident occurs and the reactor power goes up instantly, the temperature of the core will change only slowly. This is because the thermal capacity of the core is so high. Therefore, the VHTR system can passively remove the decay heat of the core by natural convection and radiation from the surface of the reactor pressure vessel. The objectives of this study are to investigate the heat transfer characteristics of natural convection of a one-side heated vertical channel with inserted porous materials of high porosity and also to develop the passive cooling system for the VHTR. An experiment was carried out using a one-side heated vertical rectangular channel. To obtain the heat transfer and fluid flow characteristics of the vertical channel with inserted porous material, we have also carried out a numerical analysis using a commercial Computational Fluid Dynamics (CFD) code. This paper describes the thermal performances of the one-side heated vertical rectangular channel with an inserted copper wire of high porosity.

Keywords

References

  1. X. Yan, K. Kunitomi, T. Nakata, S. Shiozawa, GTHTR300 design and development, Nucl. Eng. Design. 222 (2003) 247-262. https://doi.org/10.1016/S0029-5493(03)00030-X
  2. R. Echigo, S. Hasegawa, S. Nakano, Simultaneous radiative and convective heat transfer in a packed bed with high-porosity, Trans. JSME 40 (330) (1974) 479-487. https://doi.org/10.1299/kikai1938.40.479
  3. K. Kamiuto, K. Kanamaru, T. Ando, R. Echigo, S. Hasegawa, Simultaneous convective and radiative heat transfer in a packed bed with high porosity: 2nd report, analysis taking account of two-dimensional propagation of thermal radiation, Trans. JSME 44 (388) (1978) 4234-4242. https://doi.org/10.1299/kikai1938.44.4234
  4. R. Echigo, Trans. JSME 48 (1982) 2315-2322. https://doi.org/10.1299/kikaib.48.2315
  5. J. Yamada, K. Ichimiya, Trans. JSME 63 (1997) 4036-4042. https://doi.org/10.1299/kikaib.63.4036
  6. A.R. Martin, C. Saltiel, W. Shyy, Heat transfer enhancement with porous inserts in recirculating flows, ASME J. Heat Transfer 120 (1998) 458-467. https://doi.org/10.1115/1.2824271
  7. V.V. Calmidi, R.L. Mahajan, The effective thermal conductivity of high porosity fibrous metal foams, ASME J. Heat Transfer 121 (1999) 466-471. https://doi.org/10.1115/1.2826001
  8. A. Honma, T. Takeda, Proc. of the 17th International Conference on Nuclear Engineering, Brussels, Belgium, July 12-16, 2009. ICONE17-75061.
  9. T. Takeda, A. Sato, S. Funatani, Proc. of the 20th International Conference on Nuclear Engineering Collocated with the ASME 2012 Power Conference, Anaheim, CA, USA, July 30-August 3, 2012. ICONE20POWER2012-55155.

Cited by

  1. Heat transfer characteristics of one side heated vertical rectangular channel applied as vessel cooling system of VHTR vol.84, pp.859, 2015, https://doi.org/10.1299/transjsme.17-00391
  2. Simulation of mixed convection of a variable viscosity fluid in a partially porous horizontal channel with a heat-generating source vol.11, pp.1, 2019, https://doi.org/10.20537/2076-7633-2019-11-1-95-107
  3. Experimental and Numerical Analysis of Mixing Process of Two Component Gases in a Vertical Fluid Layer in a VHTR vol.5, pp.2, 2019, https://doi.org/10.1115/1.4041690