Effects of contact-nature on transient thermal contact conductance

Estimativa da Variação Temporal de Condutância Térmica de Contato em Placas Termicamente Finas via Método MCMC

“…Muitos trabalhos, especialmente nesta última década, se dedicaram na proposta de metodologias experimentais de condutância térmica de contato [11][12][13][14], em aplicações e na sua identificação envolvendo a solução de problemas inversos, que tipicamente são resolvidos por meio de abordagens analíticas e Bayesianas. Os primeiros, tem sua solução obtida por meio de métodos que não envolvem uma análise sob incerteza das estimativas e dos demais parâmetros presentes nos modelos utilizados, como métodos envolvendo gradiente conjugado ou funcionais de reciprocidade [2,[15][16][17][18][19][20][21][22][23][24]. Entre as abordagens envolvendo técnicas Bayesianas [3,7,25], que permitem análise sob incerteza, foram consideradas estimativas e análises apenas em funções com variação espacial da condutância térmica de contato.…”

Steady‐state estimation of thermal contact conductance between sliding disk and stationary cylinder with similar/dissimilar materials under the isothermally heated boundary condition

“…They have a much lower thermal conductivity compared with metallic contacting surfaces. So, there is a thermal contact resistance (TCR) [5][6][7][8][9][10][11][12][13][14][15] that is the inverse of the TCC. The TCR plays a key role when the safety and lifetime of a system should be secured with effective thermal management.…”

“…Other studies relating to the TCC between flat surfaces could be found in References [19,20,[22][23][24][25][26][27]. Kumar and Tariq 11,28 investigated the timedependent interfacial heat transfer/TCC between steel-steel conforming (surface) as well as nonconforming (line) contacts under various loadings. They 11,28 understood that there was a distinct influence of conforming/nonconforming contacts on the transient TCC under identical thermophysical conditions.…”

“…Kumar and Tariq 11,28 investigated the timedependent interfacial heat transfer/TCC between steel-steel conforming (surface) as well as nonconforming (line) contacts under various loadings. They 11,28 understood that there was a distinct influence of conforming/nonconforming contacts on the transient TCC under identical thermophysical conditions. On the basis of the quasistatic thermal equilibrium circumstance for the heat flow at the end of tests, the steady-state TCC was computed by the interfacial temperature drop.…”