Mass Flow Rate Controlled Fully Develope Laminar Pulsating Pine Flows

摘要

Pressure gradient driven,laminar,fully developed pulsating pipe flows have been exten-sively studied by various researchers and the data for the resultant flow field are available in a number of publications.The present paper,however,concentrates on related flows that are mass flow driven,i.e.,the flows where the mass flow rate is prescribed as m = m_M+m_Af_m(t) and f_m(t) is periodically varying in time.Sinusoidal and triangular mass flow rate pulsations in time are analytically considered in detail.Results of experimental investigations are presented and are complemented by data deduced-from corre sponding analytical and numerical studies.Overall,the results provide a clear insight into mass flow rate driven,laminar,fully developed pulsating pipe flow.To the best of the authors'knowledge,flows of this kind have not been studied before experimentally,ana- lytically and numerically.