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General description
Design of complex cryogenic systems, in particular, for large superconducting magnets and cryopumps cooled by forced flow, requires accurate modelling of thermohydraulic transients in order to predict helium flow parameters in cooling channels and temperature distribution in different components. The code VENECIA is the next generation of the code VINCENTA developed for simulation of transient thermohydraulic processes in superconducting magnet systems cooled by forced flow of single and two-phase helium 4 (He I). VINCENTA has been extensively used for the last 11 years in R&D activities on a number of tokamaks (ITER, KSTAR, JT-60SA) and proved itself as a reliable tool for modelling various cryogenic systems [4-10].
As compared to VINCENTA, the new code enables comprehensive prediction of thermohydraulic behaviour of modern cryogenic systems for both LTS and HTS applications. The code utilizes an extended database of coolants that includes helium 4, helium 2 and nitrogen. The database has a universal format suitable for description of any coolants and may be easily supplemented with a new coolant, even non-cryogenic, such as water. Different coolants can be used in a single calculation model simultaneously.
A complex computational model is built as a combination 1D nonlinear thermohydraulic models for coolant flows and 1D or 2D models for heat diffusion in solid material linked together. Complex models are able to simulate transient behavior of cryogenic systems and superconducting magnet systems simultaneously, with allowance for the realistic magnet geometry, cryogenic accessories, nonlinear thermal properties of coolant and materials. VENECIA is capable of simulation of both "short" transients (stability and quench of conductors, different emergency conditions) and "long" transients (operation modes, cool down, warm up etc.).
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Germany (headquarters): Alphysica GmbH. Unterreut, 6, D-76135, Karlsruhe, Germany,
Phone: +49 (0)163 904-85-61,
Fax: +49 (0)7219 444-26-55, E-mail: info@alphysica.com
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USA: Alphysica Inc. 414, Jackson street,
San Francisco, CA 94111, USA,
Phone/Fax: +1 415.230.23.63, E-mail:usa@alphysica.com
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Russia: Alphysica Ltd. 55, ul. Mayakovskogo, 191025, St.Petersburg, Russia,
Phone/Fax: +7 (812) 335-95-04, E-mail: russia@alphysica.com
Copyright © 1994-2010
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