Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 02, 2023
In this report, wire meshes are stacked in a reciprocating flow field with a constant volume, and pressure is measured by changing the reciprocating frequency of the piston. The experimental apparatus is filled with nitrogen or helium. The measured pressure is used to investigate flow characteristics and to calculate the heat transfer rate utilizing that the internal energy of the gas that changed due to heating or cooling is a unique function of its pressure. When the amplitude of the differential pressure (amplitude of the fundamental frequency of the Fourier series expansion) is plotted versus velocity, the order of magnitude is comparable to that of the correlation equations by Hamaguchi et al. and Tanaka et al. The velocity dependence is closer to that of Tanaka et al. Heat added to the gas during a heat cycle is compared with the theoretical value that is found as all the gas in the cooler side is at the cooler temperature and the temperature gas in the regenerator has a linear distribution boom the heat and the heat and the cooler temperature. The experimental value is about 25% of the theoretical value.
