naa a22 4500 510766137 CHVBK 20180411083157.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11630-013-0633-y doi (NATIONALLICENCE)springer-10.1007/s11630-013-0633-y A study on the gas-solid particle flows in a needle-free drug delivery device [Elektronische Daten] [Md. Rasel, Md. Taher, H. Kim] Different systems have been used over the years to deliver drug particles to the human skin for pharmaceutical effect. Research has been done to improve the performance and flexibility of these systems. In recent years a unique system called the transdermal drug delivery has been developed. Transdermal drug delivery opened a new door in the field of drug delivery as it is more flexible and offers better performance than the conventional systems. The principle of this system is to accelerate drug particles with a high speed gas flow. Among different transdermal drug delivery systems we will concentrate on the contour shock tube system in this paper. A contoured shock tube is consists of a rupture chamber, a shock tube and a supersonic nozzle section. The drug particles are retained between a set of bursting diaphragm. When the diaphragm is ruptured at a certain pressure, a high speed unsteady flow is initiated through the shock tube which accelerates the particles. Computational fluid dynamics is used to simulate and analyze the flow field. The DPM (discrete phase method) is used to model the particle flow. As an unsteady flow is initiated though the shock tube the drag correlation proposed by Igra et al is used other than the standard drag correlation. The particle velocities at different sections including the nozzle exit are investigated under different operating conditions. Static pressure histories in different sections in the shock tube are investigated to analyze the flow field. The important aspects of the gas and particle dynamics in the shock tube are discussed and analyzed in details. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Shock tube nationallicence Drug delivery nationallicence Contoured shock tube nationallicence Unsteady flow nationallicence Biolistics nationallicence Rasel Md Department of Mechanical Engineering, Andong National University, 760-749, Andong, Korea aut Taher Md Department of Mechanical Engineering, Andong National University, 760-749, Andong, Korea aut Kim H. Department of Mechanical Engineering, Andong National University, 760-749, Andong, Korea aut Journal of Thermal Science Springer Berlin Heidelberg 22/4(2013-08-01), 340-344 1003-2169 22:4<340 2013 22 11630 https://doi.org/10.1007/s11630-013-0633-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0633-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rasel Md Department of Mechanical Engineering, Andong National University, 760-749, Andong, Korea aut NATIONALLICENCE 700 1- Taher Md Department of Mechanical Engineering, Andong National University, 760-749, Andong, Korea aut NATIONALLICENCE 700 1- Kim H. Department of Mechanical Engineering, Andong National University, 760-749, Andong, Korea aut NATIONALLICENCE 773 0- Journal of Thermal Science Springer Berlin Heidelberg 22/4(2013-08-01), 340-344 1003-2169 22:4<340 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer