Publication

Verification of Ntracer/cobra-tf with Serpent2/subchanflow for Full Core High Fidelity High-resolution Analysis of Vvers

2025

Abstract

This work illustrates the verification of the nTF/CTF multi-physics core solver for full core VVER-1000 analysis and more specifically the X2 benchmark. The coupled code system is compared with a solver of similar capabilities, Serpent2/SCF. The differences in the models and in the methods employed by the multi-physics core solvers are discussed in detail. Their impact is studied by comparing nTF/CTF with Serpent2/SCF for single VVER assembly calculations with different modeling options. Then, the two code systems are compared for the Hot Full Power (HFP) state of the X2 benchmark, which includes two phases, one with default modeling options for all codes, and one with consistent modeling options. Overall, nTF/CTF presents good agreement with Serpent2/SCF, in terms of power, temperature and boron concentration. The existing discrepancies can be partly attributed to the different methods and correlations used by the codes involved in the coupled code systems.

Official source

https://infoscience.epfl.ch/entities/publication/c75697ad-96bf-447d-a0c5-5fb3daaed198

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c75697ad-96bf-447d-a0c5-5fb3daaed198

About this result

Related concepts (32)

Option (finance)

In finance, an option is a contract which conveys to its owner, the holder, the right, but not the obligation, to buy or sell a specific quantity of an underlying asset or instrument at a specified strike price on or before a specified date, depending on the style of the option. Options are typically acquired by purchase, as a form of compensation, or as part of a complex financial transaction.

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In finance, a price (premium) is paid or received for purchasing or selling options. This article discusses the calculation of this premium in general. For further detail, see: for discussion of the mathematics; Financial engineering for the implementation; as well as generally. This price can be split into two components: intrinsic value, and time value (also called "extrinsic value"). The intrinsic value is the difference between the underlying spot price and the strike price, to the extent that this is in favor of the option holder.

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In finance, the style or family of an option is the class into which the option falls, usually defined by the dates on which the option may be exercised. The vast majority of options are either European or American (style) options. These options—as well as others where the payoff is calculated similarly—are referred to as "vanilla options". Options where the payoff is calculated differently are categorized as "exotic options". Exotic options can pose challenging problems in valuation and hedging.