TED-AJ03-296 TRANSIENT HEAT TRANSFER DURING QUENCHING OF A VERTICAL HOT SURFACE WITH BOTTOM FLOODING

スポンサーリンク

概要

• 論文の詳細を見る

• During a quench of hot surface, heat transfer rate dramatically changes about more than 100 times depending on whether the surface is wetted or not, that is either nucleate or film boilings occurs. Therefore, to predict wetting front or wetting velocity correctly is essentially important in understanding of cooling of hot surface. The objectives are to analytically specify the wetting front using the inverse solution and then to compare the analytical and experimental ones measured when the hot surface is flooded with a rising liquid and to show the changes in the surface temperature and heat flux with movement of the wetting front. In the experiment, the temperatures were measured during the quench of the hot surface by the rising liquid from which the surface temperature and heat flux are estimated by applying inverse solution recently developed by Monde et al.. Figure A1 shows the surface heat flux for copper during the quench of rising liquid at a velocity of u_l=1.29mm/s and liquid temperature of T_l=22.8℃. The point at which the maximum heat flux appears moves with time and its values varies from 3 to 1MW/m^2. These heat fluxes are enough for boiling to take place. Therefore, the point on the surface can be surely wetted by the liquid. Figure A2 shows the locus on which the maximum heat flux takes place for two tested materials and the wetting front obtained by observation with video camera. In Fig. A2,the value of t_f means the time when the rising liquid reaches the top of the tested surface. It is found from Fig. A2 that the maximum heat flux occurs near the wetting point and both points are very close. The lower liquid temperature and lower thermal conductivity make the wetting front close to the liquid level of rising liquid than the higher ones. This difference is due to amount of the heat transfer to the liquid and heat conduction to the solid. In other words, the earlier wetting is made when the surface temperature is quickly cooled to reaches a temperature.[figure]

• 一般社団法人日本機械学会の論文

著者

• Arima Hiroshi

  Department of Endocrinology and Diabetes, Field of Internal Medicine, Nagoya University Graduate Sch

• Monde Masanori

  Department Of Mechanical Engineering Faculty Of Science And Engineering Saga University

• Monde Masanori

  Department Of Mechanical Engineering

• MITSUTAKE Yuichi

  Department of Mechanical Engineering, Saga University

• KAWABE Ryuhei

  Systems Safety Department, Nuclear Power Engineering Corporation

• YEE Takayoshi

  Department of Mechanical Engineering, Saga University

• Yee Takayoshi

  Department Of Mechanical Engineering Saga University

• Kawabe Ryuhei

  Systems Safety Department Nuclear Power Engineering Corporation

• Arima Hiroshi

  Department Of Mechanical Engineering Saga University

• Mitsutake Yuichi

  Department Of Mechanical Engineering Saga University

関連論文

• Successful Allogeneic Bone Marrow Transplantation for Diamond-Blackfan Anemia Complicated by Severe Cardiac Dysfunction due to Transfusion-Induced Hemochromatosis
• Genetic Analysis of Two Japanese Patients with Non-classical 21-Hydroxylase Deficiency
• Histiocytic sarcoma and underlying chronic myelomonocytic leukemia : a proposal for the developmental classification of histiocytic sarcoma
• Short- and long-term prognosis of blood pressure and kidney disease in women with a past history of preeclampsia
• TED-AJ03-294 ULTRA HIGH CRITICAL HEAT FLUX DURING FORCED FLOW BOILING HEAT TRANSFER WITH AN IMPINGING JET
• TED-AJ03-296 TRANSIENT HEAT TRANSFER DURING QUENCHING OF A VERTICAL HOT SURFACE WITH BOTTOM FLOODING
• Analytical Study of Critical Heat Flux in Two Phase Thermosyphon : Relationship between Maximum Falling Liquid Rate and Critical Heat Flux
• Critical Heat Flux in Saturated Forced Convective Boiling with anh Impinging Jet : Coexistence of Pool and Forced Convective Boiling
• Characteristics of Transient Heat Transfer on a Hot Surface during Cooling with Spray
• E213 PRESSURE RECOVERY IN EVACUATED ENCLOSURE AND HEAT TRANSFER DURING TRANSINT COOLING OF HIGH TEMPERATURE SURFACE(Evaporation-2 and others)
• Analysis of Ammonia Vapor Absorption into Ammonia Water Mixtures : Rate of Absorption Reaction
• ESTIMATION OF SURFACE TEMPERATURE AND HEAT FLUX USING INVERSE SOLUTION FOR ONE DIMENSIONAL HEAT CONDUCTION
• Determination of Surface Temperature and Heat Flux Using Inverse Solution for Two Dimensional Heat Conduction
• Systemic Follicular Lymphoma with Massive Intestinal Involvement with Leukemic Manifestation
• Enteropathy-Associated T-Cell Lymphoma Type II Complicated by Autoimmune Hemolytic Anemia
• Homogeneous Boiling Explosion during High Heat Flux Pulse Heating of Water
• Characteristics of Heat Transfer and Wetting Front during Quenching by Jet Impingement
• Leukemic Manifestation of Blastic Plasmacytoid Dendritic Cell Neoplasm Lacking Skin Lesion : A Borderline Case between Acute Monocytic Leukemia
• Glucose tolerance was improved in an acromegalic patient treated with somatostatin analogue while insulin release was markedly suppressed
• Monocytic Crisis of Chronic Myeloid Leukemia in the Era of Tyrosine Kinase Inhibitor
• Therapeutic Effects of Lenalidomide on Hemorrhagic Intestinal Myeloma-associated AL Amyloidosis

もっと見る 閉じる

スポンサーリンク