4251

4022

كارشناسي ارشد

تبديل انرژي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1387

ده، 90، [II] ص.: مصور، جدول، نمودار

ص. ع. به فارسي و انگليسي

محمد سعيد سعيدي

محسن دوازده امامي

21/7/1387

ابراهيم شيراني، احمد رضا پيشه ور

1396/03/07

كتابنامه

مكانيك

مهندسي مكانيك

ID4022

به فارسي و انگليسي : قابل رويت در نسخه ديجيتال

ABSTRACT In this work the dynamic deposition of particles in the lung is modeled based on theEulerian Eulerian approach The whole lung is simulated and the deposition rate in eachgeneration is derived by solving the aerosol General Dynamic Equation GDE Alldeposition mechanisms are considered and the effect of each mechanism for each particlesize is studied The one dimensional GDE is solved by the fractional step method to obtainthe size distribution of the inhaled particles in the lung Also the alveolar region isconsidered to have expansion and contraction during a breathing cycle In this article thegrowth and coagulation of particles are also modeled In order to solve the GDE acomputational method is implemented based on time step splitting and subcyclingapproach combined with a moving grid method for growth process Comparison of theresults with current experimental and numerical results shows a good agreement Also itshows that larger particles deposit more on the upper region while the smaller ones depositmore on the lower region of the lung Including the effect of particle growth andcoagulation increases the rate of deposition of smaller particles The results show themaximum deposition occurs in right lower lobe and minimum deposition occurs in rightmiddle lobe and that deposition fraction in Horsfield s model is lower than Weibel smodel

محمد سعيد سعيدي

محسن دوازده امامي