M. Hashemi-Tilehnoee
[ 1 ] - Indoor radon survey in Shiraz-Iran using developed passive measurement method
Background: While in the open air the amount of radon gas is very small and does not pose a health risk, in confined spaces, radon can accumulate to relatively high levels and become a health hazard. Exposure to high levels of radon has been associated with an increased risk of lung cancer, depending on the time length of exposure. Radon level in dwelling of Shiraz with 1,200,000 popul...
[ 2 ] - Viscous Dissipation Impact on Free Convection Flow of Cu-water Nanofluid in a Circular Enclosure with Porosity Considering Internal Heat Source
In this work, free convection of Cu-water nanofluid in an enclosure by considering internally heat generated in the porous circular cavity and the impacts of viscous dissipation are numerically evaluated by control volume finite element method (CVFEM). The outer and inner sides of the circular porous enclosure are maintained at a fixed temperature while insulating the other two walls. The impac...
[ 3 ] - بررسی اثر جهت قرار گیری هیتر و کولر بر عملکرد یک مدار جابهجایی طبیعی مینیاتوری با نانو سیال آب-مس
امروزه مدارهای جابجایی طبیعی در سیستمهای صنعتی مختلفی مانند سیستمهای گرمایش خورشیدی، راکتورهای هسته‌ای، سیستمهای زمین گرمایی، خنک سازی قطعات الکترونیکی و غیره کاربرد دارند. در یک مدار جابهجایی طبیعی، سیال عامل گرمای گرفته شده از منبع گرم (هیتر) را به منبع سرد (کولر) تحویل می‌دهد. هدف اصلی این مقاله، بررسی اثرات جهت قرارگیری هیتر و کولر بر دبی جرمی مدار و توزیع دما در مدار جابهجایی طبیعی می...
[ 4 ] - Overcoming the uncertainty in a research reactor LOCA in level-1 PSA; Fuzzy based fault-tree/event-tree analysis
Probabilistic safety assessment (PSA) which plays a crucial role in risk evaluation is a quantitative approach intended to demonstrate how a nuclear reactor meets the safety margins as part of the licensing process. Despite PSA merits, some shortcomings associated with the final results exist. Conventional PSA uses crisp values to represent the failure probabilities of basic events. This causes...
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