Neutron transport simulation in high speed moving media using Geant4

2017 ◽  
Vol 874 ◽  
pp. 66-71 ◽  
Author(s):  
G. Li ◽  
B. Ciungu ◽  
G. Harrisson ◽  
R.B. Rogge ◽  
Z. Tun ◽  
...  
Keyword(s):  
High Speed ◽  
Neutron Transport ◽  
Transport Simulation ◽  
Moving Media

Neutron Transport in Moving Media

1979 ◽  
Vol 36 (2) ◽  
pp. 230-262 ◽  
Author(s):  
H. L. Wilson ◽  
W. H. Scott, Jr. ◽  
G C. Pomraning
Keyword(s):  
Neutron Transport ◽  
Moving Media

scholarly journals A time-domain Kirchhoff formula for the convective acoustic wave equation

2016 ◽  
Vol 472 (2187) ◽  
pp. 20150689 ◽  
Author(s):  
Ghader Ghorbaniasl ◽  
Leonidas Siozos-Rousoulis ◽  
Chris Lacor
Keyword(s):  
Wave Equation ◽  
Time Domain ◽  
High Speed ◽  
Flow Region ◽  
Medium Effect ◽  
Moving Frame ◽  
Moving Medium ◽  
Mean Flow ◽  
The Time Domain ◽  
Moving Media

Kirchhoff’s integral method allows propagated sound to be predicted, based on the pressure and its derivatives in time and space obtained on a data surface located in the linear flow region. Kirchhoff’s formula for noise prediction from high-speed rotors and propellers suffers from the limitation of the observer located in uniform flow, thus requiring an extension to arbitrarily moving media. This paper presents a Kirchhoff formulation for moving surfaces in a uniform moving medium of arbitrary configuration. First, the convective wave equation is derived in a moving frame, based on the generalized functions theory. The Kirchhoff formula is then obtained for moving surfaces in the time domain. The formula has a similar form to the Kirchhoff formulation for moving surfaces of Farassat and Myers, with the presence of additional terms owing to the moving medium effect. The equation explicitly accounts for the influence of mean flow and angle of attack on the radiated noise. The formula is verified by analytical cases of a monopole source located in a moving medium.

OPTIMIZATION OF RADIAL MOC SOLVER IN NEUTRON TRANSPORT SIMULATION USING 2D/1D METHOD

2019 ◽  
Vol 2019.27 (0) ◽  
pp. 1456
Author(s):  
Le Kang ◽  
Zhijian Zhang ◽  
Yunlin Xu ◽  
Chen Hao ◽  
Qiang Zhao ◽  
...  
Keyword(s):  
Neutron Transport ◽  
Transport Simulation
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