FEM ConstraintHeatflux/it

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Vincolo temperatura iniziale

Vincolo temperatura

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Scambio termico
Modello → Vincoli termici → Vincolo scambio termico
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Tutorial FEM
Contents 1 Descrizione 2 Utilizzo 3 Note

Descrizione

Questo vincolo specifica lo scambio termico (film heat transfer) di una superficie a temperatura T e con un coefficiente di scambio termico h e una temperatura ambiente T₀ . Il flusso di calore convettivo q è in grado di soddisfare: q = h(T -T₀)

introduced in version 1.0: Can be also used to define a radiation heat flux on a surface. It satisfies: $q=\epsilon \sigma (T^{4}-T_{0}^{4})$ where $\epsilon$ is the surface emissivity and $\sigma$ is the Stefan-Boltzmann constant.

Utilizzo

Cliccare su o scgliere Modello → Vincoli termici → Vincolo Scambio termico dal menu principale.
Selezionare nella vista 3D la superficie a cui il vincolo deve essere applicato.
Inserire la temperatura della superficie desiderata, il coefficiente del materiale e la temperatura ambiente.

Note

Il vincolo utilizza la *FILM card in CalculiX. Il vincolo scambio termico è spiegato in http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node203.html

Vincolo temperatura iniziale

Vincolo temperatura

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