Recent content by hmeier

Look in www.iaea.org, they have tonnes of documents, some from research reactors.

Try this, D1∇2ø(r)1-∑rem1θ(r)1=δS D2∇2ø(r)2-∑rem2θ(r)2=∑1→2θ(r)1 where ∑remi=∑ai+∑i→j Calculate θ(r)1 that will be something like S/4∏r2, and then put it in the second ecuation as the thermal source coming from the fast scattering and clear ø(r)2, and then see what happens with the...

Israakaizzy, You are right, it should be 1/L if Ʃa were different than 0. I did the maths for the homogeneous part: ∇^{2}\phi=0 saying that: \phi=\frac{\widehat{\phi}}{r} The Lapplacian inspherical coordintates turns: ∇^{2}\phi=\frac{∂^{2}\widehat{\phi}}{∂r^{2}} +...

Israakaizzy, I think it should be something like Asinh(λ.r)/r + Bcosh(λ.r)/r, applying the border conditions B=0. hope it helps, Hernán

Zaidther, What you want us to check is not so easy, try to run the inner universes alone first and then then the filled ones and hopefully you will find where is the problem. Hernán

This one work for me

Zaidtaher, You have a problem with importance definition, I just specify the importance for each cell, that give me no fatal error. You still have to check, volumes and materials. AP-1000 Core c -----------------------CELL CARD--------------------------------------------- c 1 1 -10.97 -1 -8...

zaidtaher, You need to leave 5 position before each continuation cards, 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 $ROW 1 change for (5 spaces) 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 $ROW 1 If you add the spaces in all the lattices and material continuation cards it runs. Hernán

Nikkom, With the second picture I was trying to point out that such a behaviour of the debris it is quite tendentious, look at the picture of March 2014, it looks like two years after and an entire ocean away the debris are going to meet again just in front of San Francisco and Los Angeles...

I studied some diffusion models in air, never in sea water, but: http://ed_wp-content_v2.s3.amazonaws.com/wp-content/uploads/2013/08/gs61tsun103jpg-730687c0e8a35305.jpg This results looks more like a Goku´s Kamehameha...

or any other fissile material Yes it should have either U235, U233 or Pu239 if you want to maintain a reaction chain.

Commonly it´s a fuel without U238 or Th232. The mean idea of using this kind of fuels is to reduce the conversion factor to zero in scheme of complete burning of transuranics.

Astronuc, Thanks, you are right that Cacuci is just the editor. May be each author has a different definition. My problem it´s with FRs classification, usually they are classified based on the conversion rate: *<1 burner *close 1 converter *>1 breeder Now If we compare the numbers for...

Folks, I was reading the Cacuci Handbook of Nuclear Engineering, and he defines two times the conversion rate, once as: C= fissile produced/fissile consumed but later as : C= transuranic produced/transuranic consumed and said that the breeding rate is the former but for fissile...