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Conjugate Natural Convection Heat Transfer

Research Project

Project/Area Number 08650247
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKanazawa University

Principal Investigator

KIMURA Sigeo  Kanazawa University, Faculty of Engineering, Professor, 工学部, 教授 (70272953)

Co-Investigator(Kenkyū-buntansha) KIWATA Takahiro  Kanazawa University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (40225107)
UENO Hisanori  Kanazawa University, Faculty of Engineering, Professor, 工学部, 教授 (80019752)
OKAJIMA Atsushi  Kanazawa University, Faculty of Engineering, Professor, 工学部, 教授 (80013689)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1998: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1997: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsHeat Transfer / Natural Convection / Conjugate Heat Transfer / Unsteady Flow / Rayleigh number / Nusselt number / Numerical Analysis / Flow Visualization / ネッセル数
Research Abstract

There have been many works about natural convection heat transfer The thermal conditions on the solid surface are assumed to be isothermal or constant flux in most cases. However, this situation can not occur in reality unless a set of certain thermal and hydrodynamic conditions is fulfilled. In convective heat transfer problems the thermal condition at the solid surface can not be determined apriori, but it must be obtained as a part of the temperature solution. One of the most fundamental problems is to evaluate heat transfer from a heated vertical plate in a still fluid. In view of conjugate problem, we assume that one surface of the plate is heated with a constant temperature and the other is exposed to the fluid. One-dimensional theory is developed for the unknown surface temperature. A 5^<th> order algebraic equation for the unknown surface temperature is then derived. The mean heat transfer rate, the Nusselt number, is then obtained as a product of the apparent Rayleigh number a … More nd the average surface temperature. An experimental verification of the one-dimensional theory is also conducted using a water vessel with a heated wall installed on one of the vertical walls. The heat transfer rates from the wall to the water and the average surface temperature are measured. The experimental results are well compared with the theoretical prediction. Another problem that we studied is a case where two convecting reservoirs are separated by a vertical partition of finite conductivity An average heat transfer rate and the mean temperatures of the partition surfaces are obtained theoretically using a similar one-dimensional approach described above. An experiment is also carried out in order to test the proposed theory A marked nature of the present one-dimensional theory lies in its simplicity and its power to incorporate all the conditions (parameters) involved in the problem. The problem was extended to water-glycerin and water-porous systems. It is experimentally proved that the theory works equally well for these extended cases. Forced convection over a horizontal plate and conjugate natural convection problems for various geometries have been investigated in a similar manner. Heat loss from a geothermal wall bore to surrounding rock formation is also studied. Less

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] M.Vynnycky: "Conjugate Free Convection due to a Heated Vertical Plate." Int.J.Heat Mass Transfer. Vol.39 No.5. 1067-1080 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeo KIMUA: "Conjugate Natural Convection in Porous Media." Advances in Fluid Mechanics. Vol.20 No.2-3. 111-126 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kamen KANEV: "Heat Loss to the Surrounding Rock Formation from a Geothermal Wellbore" Geothermics. Vol.26 No.3. 329-349 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeo KIMURA: "Conjugate Natural Convection from a Vertical Heated Slab" Int.J.Heat Mass Transfer. Vol.41. 3203-3211 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Vynnycky: "Forced Convection Heat Transfer from a Flat Plate:the Conjugate Problem." Int.J.Heat Mass Transfer. Vol.41 No.1. 45-59 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeo KIMURA: "Conjugate Natural Convection Heat Transfer Through a Conductive Partition Separating Two Reservoirs at Different Temperatures" Proc.5th ASME/JSME Joint Thermal Eng.Conf.AJTE99-6384. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kimura, S., Kiwata, T., Okajima, A.and Pop, I.: "Conjugate Natural Convection in Porous Media." Advances in Water Resourses. Vol.20, No.2-3. 111-126 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kanev, K., Ikeuchi, J., Kimura, S.and Okajima, A.: "Heat Loss to the Surrounding Rock Formation from a Geothermal Wellbore." Geothermics. Vol.26, No.3. 329-349 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Vynnvcky, M., Kimura, S., Kanev, K.and Pop, I.: "Forced Convection Heat Transfer from a Flat Plate : the Conjugate Problem." Int.J.Heat and Mass Transfer. Vol.41, No.1. 45-59 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kimura, S., Kiwata, T.and Okajima, A.: "Conjugate Natural Convection from a Vertical Slab." Int.J.Heat and Mass Transfer. Vol.41. 3203-3211 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kimura, S., Kiwata, T.and Okajima, A.: "Conjugate Natural Convection due to a Vertical Plate." JSME Centennial Grand Congress, Int.Conference on Fluid Engineering, Tokyo, July. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kimura, S., Darie, E., Kiwata, T.and Okajima, A.: "Conjugate Natural Convection Heat Transfer through a Conductive Partition Separating Two Reservoirs at Different Temperatures" Proc.5th ASME/JSME Joint Thermal Engr.Conference, San Diego, March. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Vynnycky, M.and Kimura, S.: "Conjugate free Convection due to a Heated Vertical Plate" Int.J.Heat and Mass Transfer. Vol.39. 1067-1080 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Kanev, K,Ikeuchi, J,Kimura, S.and Okajima, A.: "Heat Loss to the Surrounding Rock Formation from a Geothermal Wellbore" Geothermics. Vol.26, No.3. 329-349 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Shigeo KIMURA: "Conjugate Natural Convection from a Vertical Heated Slab" Int.J.Heat Mass Transfer. Vol.41. 3203-3211 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Shigeo KIMURA: "Natural convection in a saturated porous cross section due to an unstably-heated side wall" Advances in Fluid Mechanics. Vol.19. 115-138 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Norio SANADA: "Corrosion in acid geothermal flows with high velocity" Proc.20th NZ Geothermal Workshop. 75-80 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 木村繁男: "透水性に異方性を有する飽和多孔質層内の側方加熱による自然対流" 日本機会学会論文集. Vol.64No.618. 471-476 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Shigeo KIMURA: "Conjugate Natural Convection Heat Transfer Through a Conductive Partition Separating Two Reservoirs at Different Temperatures" Proc.5th ASME/JSME Joint Thermal Eng.Conf.1998.

    • Related Report
      1998 Annual Research Report
  • [Publications] Shigeo KIMURA: "Conjugate Natural Convection due to a Vertical Heated Plate" JSME Centennial Grand Congress International Conference on Fluid Engineering,Tokyo. Vol.3. 1623-1628 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Shigeo KIMURA: "Conjugate Natural Convection in Porous Media" Advances in Water Resoures. Vol.20 No.2-3. 111-126 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Shigeo KIMURA: "Heat Loss to the Surrounding Rock Formation from a Geothermal Wellbore" Geothermics. Vol.26 No.3. 329-349 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.VYNNYCKY: "Forced Convection Heat Transfer from a Flat Plate:the Conjugate Problem" International Journal of Heat and Mass Transfer. Vol.41 No.1. 45-59 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 中村 宗功: "異なる温度を有する2つのレザバ-を隔てる鉛直平板の熱伝達特性" 日本機械学会北陸信越学生会講演会論文集. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 木村繁男: "飽和多孔質に面した鉛直平板に沿う不安定自然対流" 日本機械学会流体工学部門講演会論文集. No.96-9. 335-336 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 木村繁男: "鉛直加熱平板からの連成自然対流熱伝達" 日本機械学会第74期全国大会講演会論文集. No.96-15,Vol.III. 171-172 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shigeo KIMURA: "Conjugate Natural Convection due to a Vertical Heated Plate" JSME Centennial Grand Congress International Conference on Fluid Engineering,Tpkyo. (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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