Monograph on Radiation Release Modeling
Writing of Monograph "Nonproliferation Problem and Mathematical Prediction of Radiation Release Parameters"
Tech Area / Field
- ENV-EHS/Environmental Health and Safety/Environment
3 Approved without Funding
Joint Institute for High Temperatures RAS / High Energy Density Research Center, Russia, Moscow
- University of Michigan / College of Engineering / Department of Aerospace Engineering, USA, MI, Ann Arbor
Project summaryIntensive development and dissemination of nuclear technologies including development of atomic power plants and nuclear weapons, application of radioactive materials in medicine and engineering have posed to the world community such actual problems as enhancement of atomic industry units safety, their optimum location in industrial regions and also control of nuclear material and technologies nonproliferation. It is clear that successful solution of these problems is impossible without reliable quantitative estimates of spatial distribution of radiation on environment.
The book contains description of methods to assess with the use of computer the radioactive contamination regions that result from probable accidental releases in atomic and chemical industries. Two sets of tasks have a practical interest. In the first case the problem is reduced to determination of expected area and level of radioactive contamination with specified source positions at specified parameters and intensity of radioactive release In the second case, based on data about radionuclides spread in environment, it is necessary to localize the radiation source and determine its characteristics. Thereby, in the first case the problem is reduced to solution of direct problem of contaminant spreading in environment, whereas in the second case it is necessary to solve inverse problem of convective contaminant transport and diffusion. In doing so, solution of the second problem comprises, as a part, correct analysis of direct problems of convective transport. Two ways of computer modeling are targeted for consideration in this monograph: global modeling of accidental processes on the whole with the use of simplified physical-mathematical models and labor-saving numerical algorithms and combined modeling in which the whole process is pided into stages, each stage is defined by appropriate mathematical models and is computed with the use of various algorithms. The original method of stochastic modeling is described in the book alongside with traditional finite difference methods for the decision of problems of the convective turbulent diffusion of a radioactive impurity in an atmosphere. It is presented the example of its use for the analysis of known incidents. The account of a direct task at computer reproduction of the known failures, which have resulted in radioactive pollution an environments, allows to carry out the verification of mathematical models and used numerical methods. The large attention in the book is given to a problem of use in calculations of vortex resolving numerical algorithms at the analysis of emergencies that allows to take into account scantily explored now effect of capture and carry of an impurity by whirlwinds. It will allow to take into account a masking role of whirlwinds at the analysis of a radioactive trace and parameters of a source of emission. Besides in the monograph some economic algorithms used at the decision of a wide circle of problems from tasks of the aeromechanics up to tasks of physics of burning and explosion are described. As an illustration of potentially hazard accidental situations, a list of accidents with nuclear weapons and nuclear power units is given.
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