Ex-Reactor Determination of Thermal Gap Conductance between Uranium Dioxide:Zircaloy-4 Interfaces

Garnier, J. E.; Begej, S.; Desjarlais, AO; Tye, R. P.

doi:10.1007/978-1-4684-4265-6_19

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…Both ex-reactor gap conductance experiments at PNNL Begej, 1979a, Garnier andBegej, 1979b) and in-reactor experiments at Halden Reactor Project in Norway (Miller, 1980) have confirmed the magnitude of the jump distance that is calculated by FRAPCON-3.3.…”

Section: 131mentioning

confidence: 62%

Predictive Bias and Sensitivity in NRC Fuel Performance Codes

Geelhood¹,

Luscher²,

Senor³

et al. 2009

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Section: 131mentioning

confidence: 62%

Predictive Bias and Sensitivity in NRC Fuel Performance Codes

Geelhood¹,

Luscher²,

Senor³

et al. 2009

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“…The set of equations (20) has a general form, not related to a specific physical law or to a specific geometry. Now we have to couple the proposed contact laws with the proposed geometry of the contact element and to carry out the linearization.…”

Section: Consistent Linearizationmentioning

confidence: 99%

“…Virtual and finite variations of geometric parameters are involved in equations (20). For this purpose the consistent linearization technique is here applied; details can be found in Reference 3, where variations of some of the parameters have been obtained.…”

Section: Geometric Parametersmentioning

confidence: 99%

Real contact mechanisms and finite element formulation—a coupled thermomechanical approach

Zavarise¹,

Wriggers²,

Stein³

et al. 1992

Numerical Meth Engineering

121

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The solution of contact problems involves great numerical efforts to satisfy non-penetration conditions. The search for numerical efficiency hence has limited the modelling of the real physical interface behaviour. Up to now mainly simple laws, usually formulated using constant coefficients, have been available to study contact problems in uncoupled from. Here a thermomechanically coupled contact element is presented which accounts for the real microscopic shape of the surfaces, the microscopic mechanism of force transmission and heat exchange. The contact element geometrical behaviour has been put together with experimental and theoretical well founded micro-mechanical and micro-thermal laws adapted to Finite Element Method (FEM) necessities. Based on these laws the macroscopic related stiffnesses are calculated and continuously updated taking into account changes in significant parameters. The linearization of the set of equations has been obtained using a consistent technique which implies computational efficiency

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Ex-Reactor Determination of Thermal Gap Conductance between Uranium Dioxide:Zircaloy-4 Interfaces

Cited by 2 publications

References 10 publications

Predictive Bias and Sensitivity in NRC Fuel Performance Codes

Predictive Bias and Sensitivity in NRC Fuel Performance Codes

Real contact mechanisms and finite element formulation—a coupled thermomechanical approach

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