Thermohydraulic Design of Nuclear Reactors

It is a condition for enrolment in course 17THAR that the student must have received credit for the course 17THYR in a previous semester

Garant předmětu:

Lecturer:

Tutor:

Supervisor:

Department of Nuclear Reactors

Synopsis:

The course extends theoretical knowledge from the course Thermohydraulics of nuclear reactors and different thermohydraulics courses and shows its practical application for design of nuclear reactors. Students come to know more about flow and heat transfer in the fuel bundles and different methods of thermohydraulic design of reactor core. In details are explained CFD solution, subchannel analysis and use of system codes for these purposes. Coupling of the mentioned methods and coupling with different calculations are explained too. Theoretical lectures are completed with exercises during which students practice theory on practical tasks which are solved by SW codes: CFD ANSYS group, ALTHAMC12, COBRA SFS and RELAP.

Requirements:

Syllabus of lectures:

1.Flow and heat transfer in fuel bundles and its possibilities of solving (2 lectures): unique features of flow, physical phenomena of flow and heat transfer in reactor core, methods of solving.

2.CFD (3 lectures): basis of method, geometry creation and mesh generation, settings of computations, results analyses, results sensitivity, method advantages and disadvantages, suitability of method.

3.Subchannel analysis (3 lectures): basis of method, geometry creation, settings of computations, results analyses, results sensitivity, method advantages and disadvantages, suitability of method.

4.System codes (3 lectures): basis of method, nodalisation, settings of computations, results analyses, results sensitivity, method advantages and disadvantages, suitability of method.

5.Coupling of methods and codes (2 lectures).

Syllabus of tutorials:

1.Task solving by CFD code (4 exercises)

2.Task solving by subchannel analysis (4 exercises)

3.Task solving by system code (4 exercises)

4.Tasks evaluation and coupling (1 exercise)

Study Objective:

Study materials:

Key references:

[1]Lamarsh J.R., Baratta A.J.: Introduction to Nuclear Engineering. London: Pearson, 2017. ISBN 978-0134570051

[2]Michener T.E., Cuta J.M., Rector D.R., Adkins H.E., Jr.: COBRA-SFS: A Thermal-hydraulic Analysis Code for Spent Fuel Storage and Transportation Casks, Cycle 4, PNNL-24841, Richland, 2015

[3]D'Auria F. ed.: Thermal-Hydraulics of Water Cooled Nuclear Reactors, Woodhead Publishing, 2017, ISBN: 9780081006627

Recommended references:

[4]Todreas N.E., Kazimi M.S.: Nuclear systems, volume II - Elements of Thermal Hydraulic Design, Tailor and Francis, 2001, ISBN 1-56032-079-6

[5]ANSYS: ANSYS help, on line: https://ansyshelp.ansys.com

[6]The RELAP5 Development Team: RELAP5/MOD3.3 Code Manual - Code Structure, System Models and Solution Methods, NUREG/CR-5535/Rev P4, INEL, 2010

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Jaderné inženýrství - Jaderné reaktory (compulsory elective course)