Zobrazeno 1 - 10
of 395
pro vyhledávání: '"H Khalafi"'
Publikováno v:
مجله علوم و فنون هستهای, Vol 42, Iss 3, Pp 89-97 (2021)
HWRR element is an instrumented fuel assembly constructed based on JCPOA conceptual design parameters for Arak reactor. The in-core experiments of the fuel are carried out in TRR core to evaluate neutronic and thermal-hydraulic parameters using an ex
Externí odkaz:
https://doaj.org/article/ac33cd29fc594deeb9a22c48b7e8126b
Publikováno v:
مجله علوم و فنون هستهای, Vol 42, Iss 1, Pp 1-10 (2021)
In the present work, a numerical method is proposed in order to model the subcooled boiling flow in a vertical channel using the Drift Flux Model. The system of nonlinear equations is solved with the fully-implicit scheme using the Jacobian-free Newt
Externí odkaz:
https://doaj.org/article/8f3a180ceafe468b9b515491c7bcbc70
Publikováno v:
مجله علوم و فنون هستهای, Vol 41, Iss 4, Pp 65-73 (2020)
In this study, two methods of nano-particle coating, by boiling and electrophoretic, have been used to investigate the effect of surface modification on the Critical Heat Flux of stainless steel plates. In each of these two methods, the coating was p
Externí odkaz:
https://doaj.org/article/2fb2aff7941a43c494706d80a35ac1e7
Publikováno v:
Nuclear Engineering and Technology, Vol 52, Iss 10, Pp 2353-2360 (2020)
An anodic electrophoretic deposition (EPD) technique is used to create a uniform TiO2 thin film coating on boiling thin steel plates (1.1 mm by 90 mm). All of the effective parameters except time of the EPD method are kept constant. To investigate th
Externí odkaz:
https://doaj.org/article/1dbd63ab2a9e420b9307120b146cd9e0
Publikováno v:
مجله علوم و فنون هستهای, Vol 41, Iss 2, Pp 133-143 (2020)
Monitoring the power distribution of reactor core is one of the most challenging issues in the safe operation of nuclear reactors. The Number and arrangement of detectors in a core monitoring system should be determined in a way that maximum amount o
Externí odkaz:
https://doaj.org/article/030084186742499b8c8ac131ef3c1486
Publikováno v:
مجله علوم و فنون هستهای, Vol 40, Iss 4, Pp 1-10 (2020)
Three fresh fuel rods containing pellets inside zirconium tubes with three different enrichments and different dimensions have been evaluated using neutron radiography examinations at the Tehran Research Reactor. To obtain the information of the inte
Externí odkaz:
https://doaj.org/article/1d4726fd97b84cfa8ed4ca52b7138ff8
Publikováno v:
مجله علوم و فنون هستهای, Vol 40, Iss 1, Pp 37-47 (2019)
Medium power electron accelerators have many applications in industrial irradiations. In order to meet the industry needs of Iran, several investigations for design and construction of the medium power linear electron accelerator in the VHF band freq
Externí odkaz:
https://doaj.org/article/964d778fbdf243d4ad54c22c14553f93
Publikováno v:
مجله علوم و فنون هستهای, Vol 39, Iss 1, Pp 17-22 (2018)
Systems related to reactivity control in a heavy water zero power reactor (HWZPR) consist of safety rod, control rod, emergency dump, and water level measurement and regulation systems. The control rod reactivity worth and safety rods should, therefo
Externí odkaz:
https://doaj.org/article/72ea81e8d32d424d9ab7e346a4ffbd4d
Publikováno v:
مجله علوم و فنون هستهای, Vol 38, Iss 2, Pp 18-24 (2017)
Rossi-α method is one of the useful techniques for diagnosis of subcritical nuclear reactors. In the present work, Rossi- α method was used to measure the prompt neutron decay constant of the reactor core of the Esfahan Light Water Subcritical Reac
Externí odkaz:
https://doaj.org/article/71bd3458450145b3933b54e6ef6395a4
Publikováno v:
Iranian Journal of Physics Research, Vol 17, Iss 2, Pp 249-253 (2017)
Resonant structure is one of the proposed methods in combining power in RF systems of RF accelerators. In this structure, fabrication of RF power divider or combiner using coaxial and cylindrical cavity is important. In this study, two combiners, in
Externí odkaz:
https://doaj.org/article/dad1b2fc5c374d77a631515496b6114b