Abstract:
:The contact area of bubbles with a transparent heating surface was optically measured during subcooled pool boiling of water on the ground. In the experiments, boiling bubbles were attached to the heating surface with a bubble holder and nearly reproduced the bubble behavior observed in low gravity. DC power was applied to the ITO heater and increased until the heater surface burned out. In quick heating, that is about 20 second until burnout and equal to the heating time during the low gravity period, the contact area was smaller than that for long time heating at the same heat flux. The experimental results suggest the reason why the critical heat flux in pool boiling is higher than the widely accepted predictions in microgravity. In a drop shaft experiment with constant heating, the contact area increased dramatically at the start of microgravity and became constant. Boiling bubbles coalesced and remained just over the heating surface.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Suzuki K,Takahashi S,Ohta Hdoi
10.1196/annals.1324.021subject
Has Abstractpub_date
2004-11-01 00:00:00pages
259-68eissn
0077-8923issn
1749-6632pii
1027/1/259journal_volume
1027pub_type
杂志文章abstract::Although many authors have considered a direct interaction between allergic reactions and behavioral changes, supporting evidence has been elusive. In this series of studies we show that after oral or nasal ovalbumin (OVA) challenge, allergic mice present increased Fos expression in the paraventricular nucleus of the ...
journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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pub_type: 杂志文章,评审
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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