Date of Award


Degree Type


Degree Name

Master of Engineering (ME)


Chemical Engineering


Dr. M.H.I. Baird


Dr. J. Vlachopoulos


This thesis describes the possibility of producing a time-average pressure by reciprocation of asymmetric baffles, and proposes an apparatus to use the generated pressure in pumping fluids.

The work is divided into two parts. Part I deals with the production of a time-average pressure acting to a preferred direction. The effects of the baffle geometry and the centre-to-centre intervals between the baffles are analysed. According to this analysis the best baffle geometry and the optimum centre-to-centre intervals were determined.

Part II describes the proposed valveless pump which makes use of the phenomenon described in part I. Measurements of energy dissipation and pump efficiency are presented. The relation between the head generated and the flow rate delivered was deduced, and the characteristic curve of the pump was established.