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    An analytical model to simulate the automotive cooling system

    , Article 2005 ASME Summer Heat Transfer Conference, HT 2005, San Francisco, CA, 17 July 2005 through 22 July 2005 ; Volume 4 , 2005 , Pages 439-451 ; 0791847314 (ISBN); 9780791847312 (ISBN) Samadiani, E ; Kakaee, A ; Sharif University of Technology
    In this paper the effect of simultaneous operation of the automotive radiator, fan, engine, and cooler system on radiator coolant inlet temperature is studied. For this purpose, an analytical model is developed to simulate the automotive cooling system. First, the heat transfer rate and air pressure drop in radiators with louvered corrugated fins and flat tubes are modeled and compared with wind tunnel test results over six radiator cores. Also, the air flow path is simulated. Two preexisting codes are used to simulate the automotive engine and cooler system. Then a code is developed in order to investigate the effect of different parameters related to each component of the cooling system on... 

    Streamline-based history matching constrained to reservoir geostatistics using gradual deformation technique

    , Article Petroleum Science and Technology ; Volume 29, Issue 17 , 2011 , Pages 1765-1777 ; 10916466 (ISSN) Shojaei, H ; Pishvaie, M. R ; Kamali, M. R ; Badakhshan, A ; Sharif University of Technology
    A new and general procedure for history matching that uses streamline simulation and a gradual deformation technique has been proposed. Streamline trajectories define the major flow paths and help the algorithm to modify the reservoir model only in the regions that cause the mismatch between simulation results and field observations. The use of a gradual deformation technique enables the algorithm to remain constrained to reservoir geostatistics. It also reduces the number of independent variables in the optimization problem. In our algorithm, effective conductivities are defined along each streamline. The effective streamline conductivities are then adjusted using the values of measured and... 

    Pore-level investigation of heavy oil recovery during water alternating solvent injection process

    , Article Transport in Porous Media ; Volume 83, Issue 3 , July , 2010 , Pages 653-666 ; 01693913 (ISSN) Dehghan, A. A ; Farzaneh, S. A ; Kharrat, R ; Ghazanfari, M. H ; Rashtchian, D ; Sharif University of Technology
    This study concerns with the microscopic and macroscopic fluid distribution and flow behavior during water alternating solvent (WAS) injection process to heavy oil using micromodel generated from thin section of a real rock which has rarely attended in the available literature. In this study, a one-quarter five-spot glass micromodel was deployed to examine the effect of flow media topology on microscopic displacements as well as macroscopic efficiency of WAS process. The micromodel was initially saturated with the heavy oil, and then the hydrocarbon solvent and water were injected alternately into it. The observations confirmed that WAS injection scheme is an effective method for the...