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microporosity
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A Mathematical Model to Prediction of the Formation of Microporsities in Aluminium Alloy Cast Parts
, M.Sc. Thesis Sharif University of Technology ; Varahram, Naser (Supervisor) ; Davami, Parviz (Supervisor)
Abstract
Today, application of aluminium alloys in industries is developing. And this is because of some specification of these alloys like high proportion of the Strength per weight. One of the most useful alloys of this alloy group is A356 alloy that contain 7 % Silicon and 0.4 Percent of magnesium, this alloy because of cast ability, heat treat ability specification is use developing in air and automotive industries. But usage of this alloys combined with some difficulties like low fluidity and formation of shrinkage and gas porosities in this alloys. In present work with programmer software Visual Fortran, based on Finite difference method, a simulation model has been developed, can solve heat...
CFD Simulation of the Effect of Rock Characteristics on Hydrogen-Water Flow in Underground Hydrogen Storage
, M.Sc. Thesis Sharif University of Technology ; Mahani, Hassan (Supervisor) ; Ayatollahi, Shahaboddin (Supervisor)
Abstract
With the increasing demand for clean energy and the need to reduce greenhouse gas emissions, underground hydrogen storage has emerged as an effective strategy for managing energy demand and optimizing the use of renewable resources. Given the importance of the wettability of the hydrogen-water-rock system and its spatial distribution within pores on the performance of hydrogen storage and production from aquifers, and the lack of studies in this field, this fundamental research aims to investigate the effect of rock properties, including wettability distribution and microporosity, on hydrogen and water flow behavior at the pore scale Pore-scale simulations were conducted using computational...