Study on Friction Resistance Characteristics of Narrow Rectangular Channel Single-Phase Isothermal Flow in Heaving Motion

Experimental investigation and physical analysis were carried out on friction resistance characteristics for single-phase isothermal flow in heaving motion.Results indicated that the effect of geometrical features for narrow rectangular channel only appeared in the laminar region.Influence factors of friction resistance characteristics of narrow rectangular channel in heaving motion are channel boundary conditions.The heaving motion have no effects on the isothermal flow if the boundary conditions are only related with the velocity,and the formula for friction resistance calculation obtained in the standstill works well in heaving motion.