Thermodynamique Spé Flashcards

1
Q

Conduction thermique

A

Un transfert thermique dans la matière sans mvt macroscopique (barre qui chauffe)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Convection

A

Transfert thermique du à des mvt macroscopique de matière (dans milieux fluides ou gaz)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Jq

A

énergie traversant 1m² en 1s dans une direction normale à la surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Φ (déf + formule)

A

énergie traversant une section S en 1s (puissance traversant S)
dΦ= Jq * dS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Loi de Fourier

A

Dans le référentiel de l’objet, Jcd = -λ grad(T)
Jcd en W.K^-1.m^-1
signe - car corps chaud vers corps froid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

λ

A

conductivité thermique du matériaux

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Equation de conservation de l’énergie

A

μ Cpm ∂T/∂t = - div Jcd + sv -av

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Equation de la chaleur

A

∂T/∂t = D ΔT + sm-am/ Cpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Ostrogradski

A

Double intégrale fermé de A.dS = triple intégrale de div A. dTo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Résistance thermique

A

R=e/λS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Loi de Newton

A

Jcc=h(Tp-Tf). n(P->F) avec φ=h(Tp-Tf) (densité surfacique de flux)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

un milieux transparent…

A

transmet intégralement le rayonnement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Loi de Stephan :

A

φ=σT^4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly