Application Research on VITAS—a General-purpose Neutron Transport Code

Zhang Tengfei; Yin Han; Sun Qizheng; Xiao Wei

doi:10.13832/j.jnpe.2023.02.0015

Volume 44 Issue 2

Apr. 2023

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Zhang Tengfei, Yin Han, Sun Qizheng, Xiao Wei. Application Research on VITAS—a General-purpose Neutron Transport Code[J]. Nuclear Power Engineering, 2023, 44(2): 15-23. doi: 10.13832/j.jnpe.2023.02.0015

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Zhang Tengfei, Yin Han, Sun Qizheng, Xiao Wei. Application Research on VITAS—a General-purpose Neutron Transport Code[J]. Nuclear Power Engineering, 2023, 44(2): 15-23. doi: 10.13832/j.jnpe.2023.02.0015

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Application Research on VITAS—a General-purpose Neutron Transport Code

doi: 10.13832/j.jnpe.2023.02.0015

School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

Received Date: 2022-06-02
Rev Recd Date: 2023-02-14
Publish Date: 2023-04-15

Abstract

Abstract

In order to improve the applicability of deterministic whole-core neutron transport code, a general-purpose neutron transport code VITAS is developed. The verification results of TAKEDA3 benchmark problem (rectangular assembly), the TAKEDA4 benchmark problem (hexagonal assembly), the Dodds benchmark problem (R-Z geometry) and the C5G7-TD5 benchmark problem (PWR high fidelity calculation) show that higher-order spatial and angular basis functions can make the results converge asymptotically and steadily to the reference solution, reaching the calculation accuracy level equivalent to that of multi-group Monte Carlo method. Compared with the reference solution, the deviations are less than 60pcm (1pcm = 10⁻⁵) in effective multiplication coefficient (k_eff), −3pcm in control rod worth and 1.03% in neutron flux distribution root mean square (RMS) for TAKEDA3 benchmark problem; less than 20pcm in k_eff, 32pcm in control rod worth and 0.70% in neutron flux distribution RMS for TAKEDA4 benchmark problem; less than 1% (maximum) in power for Dodds benchmark problem; and less than 0.9% in power for C5G7-TD5 benchmark problem. The research in this paper shows that VITAS has the potential to become a general-purpose calculation tool for accurately solving the neutron transport problems.
- VITAS,
- Variational nodal method,
- General-purpose neutron transport calculation

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References(22)

References

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