Changes between Version 6 and Version 7 of GuarDyan_VarRedu

Timestamp:

Feb 13, 2018, 4:35:35 PM (7 years ago)

Author:

dieda

Comment:

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GuarDyan_VarRedu

@@ -52 +52 @@
 The second test case was the verification subcritical model (see [wiki:GuarDyan_PhysModel Modelling and Verification section]) was a 30 cm radius water sphere with 61 UO,,2,, cylindrical fuel rods of 40 cm length, 1 cm radius spaced 1 cm apart from each other see Fig. 1.. Uranium was 4.7% enriched and fuel rod density was taken as 10.5g/cm^3^.
 
-[[Image(UOH2O_geometry.png​, 800px, title=Geometry of the subcritical verification model)]] \\ ''Figure 1.: Geometry of the subcritical verification model'' 
+[[Image(UOH2O_geometry.png​, 800px, title=Geometry of the subcritical verification model)]] \\ ''Figure 3.: Geometry of the subcritical verification model'' 
+
+Table 1 shows execution times measured during the simulation of neutron transport in the inhomogeneous sample problem. Wall-times of history-based and event-based versions show no significant difference, the vectorized code performed slightly better. It must be noted that although speedups are also shown relative to MCNP runtime, these should not be considered conclusive, as the MCNP simulation ran on a single core, also, GUARDYAN is highly underoptimized. Nevertheless a factor of 6 was observed in performance over the single core MCNP simulation. 
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+||||MCNP6|| GUARDYAN history-based || GUARDYAN event-based ||
+|| Wall-time (min) ||39.9||6.73 ||6.22||
+||Speedup ||— ||5.93 ||6.41|| 
+''Table I.: Speedup factors for the subcritical assembly''
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+=== Event based and History based approach comparison, Test Case '''3''': [http://www.reak.bme.hu/oktatoreaktor.html BME Training Reactor] 
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+GUARDYAN is capable of simulating neutron transport in complex geometries, but is has yet to be further developed in order to provide quantitative results. The event-based version was tested on the geometry of the training reactor ([http://www.reak.bme.hu/oktatoreaktor.html BME Training Reactor]) at Budapest University of Technology and Economics.
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+ || [[Image(BME_OR_1e-6s_n2e24_neutrondensity_Guardyan_v3r.jpg, 400px, title=Neutron density distribution in the BME Training reactor calculated by GUARDYAN)]] ''Neutron density distribution in the BME Training reactor calculated by GUARDYAN'' [http://www.reak.bme.hu/oktatoreaktor.html Training Reactor] ||
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+ || [[Image(BME_OR_1e-6s_n2e24_neutrondensity_Guardyan_v3r.jpg, 400px, title=Neutron density distribution in the BME Training reactor calculated by GUARDYAN)]] ''Neutron density distribution in the BME Training reactor calculated by GUARDYAN'' [http://www.reak.bme.hu/oktatoreaktor.html Training Reactor] ||
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