Modelling and experimental investigation of a thermally driven self-oscillating pump

• DOI: 10.1016/j.applthermaleng.2017.02.063
• Publication Date: 2017-02-16T19:06:39Z
• Authors: Marijn P. Zwier; Henk Jan van Gerner; Wessel W. Wits
• Keywords: Oscillation (cell signaling); Momentum (technical analysis); Mass flow; Pressure head; Bar (unit); Rotodynamic pump; Check valve

This paper explores the pumping characteristics and behaviour of a thermally driven self-oscillating pump. The pump consists single wickless capillary tube with circular cross-section. is closed at one end has T-section two check valves other to provide for directional flow. An experimental setup was built investigate output mass flow pressure head During experiments, performance had negative influence on To determine this influence, video analysis fluid oscillation without conducted compared results valves. average approximately 0.0010 kg/s maximum measured 0.0013 kg/s. delivered 0.25 bar. A numerical model vapour bubble developed get better understanding its working principles. based conservation mass, momentum energy, resulted in non-linear system coupled differential equations. Overall, experiments have shown that good potential be used aerospace applications.