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Title: 鉛直配置された水平2円柱周りの自然対流に対する圧縮性流体と固体の熱連成計算手法の適用性
Other Titles: APPLICABILITY OF COMPUTATIONAL METHOD FOR COMPRESSIBLE FLUID-SOLID THERMAL INTERACTIONS TO NATURAL CONVECTION AROUND TWO HORIZONTAL CIRCULAR CYLINDERS IN VERTICAL ARRAY
Authors: 鳥生, 大祐  KAKEN_name
牛島, 省  kyouindb  KAKEN_id
Author's alias: TORIU, Daisuke
USHIJIMA, Satoru
Keywords: compressible fluid
thermal fluid-solid interaction
natural convection
heat conduction
Issue Date: 2016
Publisher: 土木学会
Journal title: 土木学会論文集A2(応用力学) = Journal of Japan Society of Civil Engineers, Ser. A2
Volume: 72
Issue: 2
Start page: l_179
End page: l_186
Abstract: 本研究では, 著者らが提案した圧縮性流体と固体の熱連成計算手法を鉛直配置された水平2円柱周りの自然対流に適用した. この計算手法では, 圧縮性流体と固体から構成される場を1つの混合流体としてモデル化し, 流体領域の流れと固体内部の熱伝導を統一的に扱う. また, 圧力の計算段階を陰的に行うことで, 低マッハ数の圧縮性流れを高速に計算できる. なお, 基礎式のモデル化を行う際には, 流体と固体で密度と比熱に大きな差がないと仮定している. 以上のような計算手法を鉛直に配置された温度一定の高温2円柱周りの自然対流に適用し, 実験結果との比較から, 得られた温度分布の妥当性を確認した. また, 熱伝導性を有する円柱が内部発熱する条件で数値実験を行い, 円柱の熱伝導率の影響を反映した妥当な温度分布が得られることを確認した.
In this paper, a computational method for thermal interactions between compressible fluids and solids was applied to the natural convection around two horizontal circular cylinders that have constant temperature in vertical array. This method enables us to simultaneously calculate natural convection and heat conduction around and in arbitrarily shaped solids considering compressibility of fluids. As a result of computations, predicted isotherms around the cylinders were in good agreement with experimental results. In addition, numerical experiments for heat-generating cylinders, which have heat generation per unit volume, were conducted and reasonable temperature distributions were obtained considering effects of heat conduction in the cylinders.
Description: 応用力学論文集Vol.19(特集)
Rights: © 2016 公益社団法人 土木学会
URI: http://hdl.handle.net/2433/229149
DOI(Published Version): 10.2208/jscejam.72.I_179
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