管壁の熱伝導を考慮した円管内脈動流による軸方向熱伝達(熱工学,内燃機関,動力など)

概要

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The longitudinal heat transfer in capillary pipes is enhanced by fluid oscillation. The analytical solution to this phenomenon is obtained considering the wall thermal conductivities. Based on this solution, the effects of wall conductivity and thickness are investigated for the case of large amplitude of fluid motion. The longitudinal heat transfer through the fluid part is more enhanced with highly conductive thick pipes. This is because the radial region where the heat is transferred backward is smaller with these pipes. The direction of longitudinal heat transfer depends on the phase difference of temporal change between the velocity and temperature; whether it exceeds π/2, or not. From this point of view, the most effective wall to this problem is presented, where the wall temperature does not change preserving the mean temperature of the location during the oscillation.
一般社団法人日本機械学会の論文
2002-12-25