フリーピストン型ヴィルミエサイクルヒートポンプの動的解析 : 固体摩擦損失の考慮

概要

論文の詳細を見る
A dynamic analysis of free-piston Vuilleumier cycle heat pumps with friction force due to seals has been carried out by a time-stepping integration technique. This technique allows application of a discontinuous damping force caused by friction to the equations of motion for reciprocating components. Some calculations for a case study were performed taking into consideration the frictional dissipation in addition to the viscous dissipation due to oscillating flow of working gas. The dissipative work due to the friction force had a large influence on the amplitudes of a hot and a cold displacer piston and their phase difference, and had small influence on natural frequency. A mechanism to determine the amplitudes was explained based on the energy balance between the rod and dissipative works. It was found that a rod seal plays an important role in the determination of the dynamic behaviors especially in the phase difference, and the present prediction method was very effective for the free-piston Vuilleumier cycle heat pumps with frictional dissipation.
一般社団法人日本機械学会の論文
1994-12-25