This thesis covers two main topics. The first is the comparison between the Reynoldsaveraged Navier-Stokes (RANS) simulation and the Large Eddy Simulation (LES) of high injection pressure diesel sprays under non-evaporating or evaporating conditions. The second topic is the comparison of the fuel behavior in the spray process between the hydrotreated vegetable oil (HVO) and the conventional EN ...

Abstract Condensation of the water vapor present in air is a heat and mass transfer process encountered many applications as humid dehumidification harvesting. Depending on wettability characteristics surface, condensation can take place filmwise mode or dropwise with formation discrete liquid droplets over condensing surface. While (DWC) pure steam was found to promote considerable enhancement...

release  volatile  organic  compounds  (vocs)  as  environmental  and  occupational  pollutant  cause  macro perspective affect such as climate change, humans and economic consequences. although fixed bed absorber is widely used as a controlling method because of its economically and availability, but these absorbers are facing some issue like high pressure drop, non-uniform distribution of flu...

Graphical size distribution is widely used in different fields of science and studies related to powders, droplets, bubbles, and pores. However, in some condition it may also be necessary to express the size distribution quantitatively. In spite of there being several suggested ways to quantify size distribution in the literature, some of these approaches are not applicable for many methods and...

tehran is located in a valley at the foot of the alborz mountains in northern iran (35 degrees latitude north). urban expansion in tehran resulted from a high rate of population growth and rural-urban migration combined with a strong tradition of centralization in the capital. airborne particulate of tehran's atmosphere was fractionated in a 6-stage high-volume cascade impactor. the first ...

background & aim: the artificial teeth are produced with same standards for all the ethnics and countries in the world. the purpose of this study was to establish a normative size distribution in a group of students and staffs of shahid beheshti university of medical sciences. methods & materials: 320 individuals participated in this descriptive study. a vernier caliper was used to measure the ...