295 300 305 310 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 Temperature [K] Channel width, x [m] Expt 0.5 OpenFOAM 0.5 ˛ ਤ 1.46: y/H = 0.5 Ͱͷ OpenFOAM ͱ࣮ݧ݁ՌͷԹ ྲྀͱԹ͕ͱʹ࣮ݧͱ OpenFOAM ͷ݁Ռ͕֓ͶҰக͠ɺվળ͍ͯ͠Δ͜ͱ ͕Θ͔Γ·͢ɻ ͨͩ͠ɺน໘ۙͷྲྀ͕࣮ݧͱ߹͓ͬͯΒͣվળͷ༨͕͋Γͦ͏Ͱ͢ɻ͞Βʹ վળ͠Α͏ͱ͢ΔͳΒɺྫ͑ϝογϡαΠζͷมߋɺy+ ͷ֬ೝɺཚྲྀϞσϧͷ ઃఆมߋɺࢄԽεΩʔϜͳͲΛݟͯ͠ΈΔͱྑ͍Ͱ͠ΐ͏ɻ ͨͩ͠ɺ1 ͭͷ࣮ݧσʔλ͚ͩΛӏವΈʹͯ͠߹Θͤʹߦ͘ͷΑ͋͘Γ·ͤΜɻ ࣮ݧσʔλ͋͘·ͰࢀߟͰ͋Γɺ࣮ݧ݅ଌఆਫ਼ͳͲόϥπΩͷൣғΛߟ͑ ͯ CAE ղੳͷ݁Ռ͕ଥ͔Ͳ͏͔Λߟ͑Δඞཁ͕͋Γ·͢ɻ 1.10 ·ͱΊ ຊষͰɺ νϡʔτϦΞϧΛࢀߟʹුྗΩϟϏςΟͷྲྀମݱΛରʹɺ Open- FOAM Λ༻͍ͨղੳख๏Λࣔ͠·ͨ͠ɻղੳʹ buoyantSimpleFoam ιϧ όΛ༻͠ɺϝογϡ࡞ blockMesh Ͱߦ͍·ͨ͠ɻ ܭࢉ࣮ߦޙɺࠩϞχλ࿈ଓࣜͷޡࠩΛ֬ೝ͠ɺҰఆͷऩଋੑ͕ಘΒΕ͍ͯΔ͜ ͱΛ֬ೝ͠·ͨ͠ɻҰํͰɺ࣌ܥྻʹԊͬͯαϯϓϦϯά͞ΕͨྲྀɾԹͷϓϩ ϑΝΠϧΛղੳͨ݁͠Ռ͔Βɺ1000 εςοϓ࣌ͰྲྀΕ͕҆ఆ͍ͯ͠ͳ͍͜ͱ – 75 –