1.1 Boundary conditions for flow transients in test loops ............................................ 6

Nuclear Systems II, 2nd edition - Solution Manual 5 Problem 1.1 Boundary conditions for flow transients in test loops ............................................ 6 Problem 1.2 Boundary conditions for a multiple channel representation of a reactor system .... 10 Chapter 1 Formulation of the Reactor Thermal Hydraulic Design Problem Contents Solutions Manual for Nuclear Systems Volume II Elements of Thermal Hydraulic Design, 2e by Neil Todreas, Mujid Kazimi, Mahmoud Massoud (All Chapters) 1 / 2

Solution Manual – Chapter 1

PROBLEM 1.1 QUESTION

Boundary conditions for flow transients in test loops (Sections 1.5 and 1.7) Identify the hydraulic and thermal boundary condition sets applicable for analysis of the three test sections described below in a loss of flow transient with constant power. Consider the cases of each test section located in the test loops sketched in Figures 1.12 and 1.13.Test section 1. Single channel with a flow blockage that reduces the cross-sectional area for flow by 50% at the axial mid-position.Test section 2. Two interconnected channels, one of which has a flow blockage as described for test section 1.Test section 3. Twenty interconnected channels, one of which has a flow blockage as described for test section 1.Note that this problem requires six answers as illustrated below.

Test sectio n Case 1 Case 2 Case 3 Loop A Loop B

FIGURE 1.12 Loop A. Nuclear Systems II, 2nd edition - Solution Manual 6

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