Reactor design Definition and 25 Threads

Dear Experts I would like to create a small modular reactor-like geometry for Serpent code (example: ABV reactor). How can I add a control rod to the center like in the picture below? Which code scripts should I add in the geometry part. And how can I do this in Hexagonal laticce?

Hi! I have been working with home-made reactor to do ambiant pressure, high temperature pyrolysis experiments that use an induction heating coil wrapped around the outside to heat the entire reactor. The contents are heated indirectly through their contact with the reactor. This worked well for...

Dear experts, I would like to get help from you on something. I want to design a vver -1200 core in the serpent nuclear code, but I am getting errors in the geometry I defined below. I would like to get help from you on how to fix these errors.I seem to be getting errors in cell definitions and...

I have ~50% slurry mass in a reactor with (4 PBT + 4PBT) agitator. Agitator is rotating at 94 RPM. To analyze reaction mass we are sending two samples at a time from bottom of the reactor. There is significant analysis deviations in these two samples. I feel that the sample is not...

What is the definition of rate ##(-r_a)=-\frac{dCa}{dt}## or ##(-r_a)=-1/V\frac{dNa}{dt}## ? I think the general one is the second one and first one is for constant volume reaction system. Is the above written rate equation only valid to batch reactor? If not can we use this in a PFR or MFR? In...

There are already 4 generations of nuclear fission reactors. (Compare https://en.wikipedia.org/wiki/Nuclear_reactor#By_generation.) However among these, there does not seem to be a (maximum) safe nuclear fission reactor design, which immediately stops the nuclear chain reaction when the reactor...

This is question that can't really get a precise answer without significant modeling or experimentation, but I'm wondering what folks' intuition might be on an answer to the following setup + question: Suppose there is a steel tank made of steel pipe with walls about 0.25 cm thick, internal...

Homework Statement My problem deals with understanding why we substitute in the reaction kinetics equivalent into mass conservation equation instead of dealing with differentials Homework Equations From the conservation of mass law about an envelope: $$\frac{dm}{d t} = \sum m_{in} - \sum...

I had read a few helpful forums on the pros and cons of going for a masters vs. phd in nuclear engineering. However, I am still confused about one thing. I am considering pursuing a career in reactor design (fission or fusion, will likely make another post to discuss this). Here are my...

Hi, I was asked by my senior to find out what this graph is and how to use it. No details were given as to where they found it. I know already that this is used to compare CSTRs and PFRs performance for first order reactions, but I can't deduce what the expressions Dd/(vxL) and kL/vx are for...

In 1958, chemical operator Cecil Kelley was killed by a nuclear excursion in a mixing tank. A tank intended to reprocess trace amounts of dissolved plutonium-239 accidentally had dramatically more radioactive material dumped into it. The plutonium, being dissolved in a lower-density fluid than...

Is there a trend in pebble bed reactors towards smaller pebble sizes? The smallest conceivable would be a carbon buckyball encasing a (single?) uranium atom. This Wikipedia article (https://en.wikipedia.org/wiki/Endohedral_fullerene) says two cerium atoms have been encapsulated in a c80...

Good evening, people of PF. Recently, while studying chemical kinetics, I have come across some questions about reaction rates and rate equations. I've noticed some inconsistencies between the chemical kinetics point of view, and the approach taken by chemical reaction engineering and reactor...

http://news.sciencemag.org/physics/2015/08/secretive-fusion-company-makes-reactor-breakthroughAbove is a link to a news story about the recent Tri Alpha Energy “breakthrough”. It looks to me like a very nice development in increased stability of a proposed reactor design. Tri Alpha emphasizes...

Is it made of quartz or stainless steel/aluminum or what? Does it matter which?that's all I need to know, I just can't seem to find if they can be made of standard vacuum metals or if they have to be quartz. Only really seen some diagrams mention quartz tubes but the pictures of large ones seem...

As part of a research project, I've been asked to design an industrial scale model for the synthesis of titania nanowires. These are currently being produced at a scale of 500 g every three days (being that it takes three days for the nanowires to morph using the given method). My director has...

I read a little bit about General Atomics EM2 reactor in the December issue of Nuclear News that someone had brought to work recently. I haven't had a chance to read all of the article and I am curious about this reactor design. Are any of you involved in it? It claims to be able to run for 30...

Homework Statement Homework Equations The Attempt at a Solution For this problem, my group is having difficulty figuring out how much Styrene is reacting, since we don't know the molecular weight of polystyrene, we can't find the moles of polystyrene, which would be used to aid in finding the...

Hi everyone, I am trying to understand the basic design requirements and rules for designing a pulse transformer which includes two secondary coils, one of which acts as a DC reactor. Does anyone know of any papers or software or have any experience with such a design?

Hello, I would like some recommendations on universities that have nuclear engg. graduate programs that specialize in design and analysis of GEN IV reactors. My professors have recommended the following: 1. Michigan 2. Penn State 3. MIT 4. North Carolina State Any info regarding grad...

Hi, I was reading about PWR control system and I saw that control rods are stainless steel tubes encapsulating a Hafnium absorber material , it has Excellent mechanical properties and exceptional corrosion-resistance properties allow its use in the harsh environment of a pressurized water...

A utility is considering changing its fuel vendor and resulting fuel assembly design. The current fuel in the reactor is standard Westinghouse 17x17 fuel with a fuel rod pitch of 1.215cm fuel rod OD of 0.916cm. The clad thickness is 0.055cm. The new fuel design has a fuel rod pitch of...

19 reactor designs using 27 criteria, DOE concludes IFR to be the best reactor design to meet world's energy needs going forward. http://www.skirsch.com/politics/ifr/DOEnuclearstudy.pdf Do you agree?

I think its common knowledge that the next generation of nuclear reactors are going to operate at much higher temperatures than current designs in order to get away from the Rankin cycle and take advantage of thermochemical cycles, but what is it that makes high temperature reactors (HTR)...

What nuclear fission reactor design has the least environmental impact? Including the building, operating, safety, and amount of pollution produced? I'd imagine IFR/breeder reactors as they burn actinides.