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Enunciados, 10 MB - IqTMA-UVa - Universidad de Valladolid

Enunciados, 10 MB - IqTMA-UVa - Universidad de Valladolid

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APÉNDICE<br />

Ley <strong>de</strong> Newton en coor<strong>de</strong>nadas rectangulares<br />

⎡ ∂v<br />

2 <br />

x<br />

⎤<br />

τ xx = −μ⎢2 − ( ∇.<br />

v)<br />

x 3<br />

⎥<br />

⎣ ∂<br />

⎦<br />

⎡ ∂v<br />

y 2 ⎤<br />

τ yy = −μ⎢2 − ( ∇.<br />

v)<br />

⎥<br />

⎣ ∂y<br />

3 ⎦<br />

⎡ ∂vz<br />

2 ⎤<br />

τ zz = −μ⎢2 − ( ∇.<br />

v)<br />

∂z<br />

3<br />

⎥<br />

⎣<br />

⎦<br />

∂v<br />

∂v<br />

x y ∂vz<br />

∇ = + +<br />

∂x ∂y ∂z<br />

( . v )<br />

⎡∂v<br />

∂v<br />

x y ⎤<br />

τ xy = τ yx = −μ ⎢ + ⎥<br />

⎣ ∂y<br />

∂x<br />

⎦<br />

⎡∂v<br />

y ∂vz<br />

⎤<br />

τ yz = τ zy = −μ ⎢ + ⎥<br />

⎣ ∂z<br />

∂y<br />

⎦<br />

⎡∂vz<br />

∂vx<br />

⎤<br />

τ zx = τ xz = −μ ⎢ +<br />

∂x<br />

∂z<br />

⎥<br />

⎣ ⎦<br />

Ley <strong>de</strong> Newton en coor<strong>de</strong>nadas cilíndricas<br />

⎡ ∂v<br />

2 <br />

r<br />

⎤<br />

τ rr = −μ⎢2 − ( ∇. v)<br />

r 3<br />

⎥<br />

⎣ ∂ ⎦<br />

⎡ ⎛1∂vθ<br />

vr<br />

⎞ 2 <br />

τ θθ = −μ ⎢2 ⎜ + ( v<br />

r r<br />

⎟− ∇. ) ⎤<br />

⎥<br />

⎣ ⎝ ∂θ ⎠ 3 ⎦<br />

⎡ ∂vz<br />

2 ⎤<br />

τ zz = −μ⎢2 − ( ∇. v)<br />

∂z<br />

3<br />

⎥<br />

⎣<br />

⎦<br />

⎡ ∂ ⎛vθ<br />

⎞ 1 ∂vr<br />

⎤<br />

τrθ<br />

= τθr<br />

= − μ ⎢r<br />

r<br />

⎜<br />

r<br />

⎟+<br />

⎥<br />

⎣ ∂ ⎝ ⎠ r ∂θ<br />

⎦<br />

⎡∂vθ<br />

1 ∂vz<br />

⎤<br />

τzθ<br />

= τθz<br />

= − μ ⎢ +<br />

z r θ<br />

⎥<br />

⎣ ∂ ∂ ⎦<br />

⎡∂vz<br />

∂vr<br />

⎤<br />

τzr<br />

= τrz<br />

= − μ ⎢ +<br />

∂r<br />

∂z<br />

⎥<br />

⎣ ⎦<br />

1 ∂ 1∂vθ<br />

∂vz<br />

∇ = + +<br />

r ∂r r ∂θ ∂z<br />

( . v) ( rvr<br />

)<br />

Ley <strong>de</strong> Newton en coor<strong>de</strong>nadas esféricas<br />

τ<br />

rr<br />

⎡ ∂v<br />

2 <br />

r<br />

⎤<br />

=−μ⎢2 − ( ∇. v)<br />

∂r<br />

3<br />

⎥<br />

⎣<br />

⎦<br />

⎡ ∂ ⎛vθ<br />

⎞ 1 ∂vr<br />

⎤<br />

τrθ<br />

= τθr<br />

= − μ⎢r<br />

+ ⎥<br />

∂r ⎜<br />

r<br />

⎟<br />

⎣ ⎝ ⎠ r ∂θ<br />

⎦<br />

τ<br />

τ<br />

θθ<br />

φφ<br />

⎡ ⎛ 1∂v<br />

vr<br />

⎞ 2 <br />

θ<br />

⎤<br />

=− μ⎢2 ⎜ + − ( ∇. v)<br />

⎥<br />

r ∂ r<br />

⎟<br />

⎣ ⎝ θ ⎠ 3 ⎦<br />

⎡ ⎛ 1 ∂vφ<br />

v cot 2<br />

2 ( . ) ⎤<br />

r v ⎞ <br />

θ θ <br />

=− μ⎢<br />

⎜<br />

+ + ⎟− ∇v<br />

⎥<br />

⎣⎢<br />

⎝r senθ<br />

∂φ<br />

r r ⎠ 3 ⎦⎥<br />

⎡ senθ<br />

∂ ⎛ vφ<br />

⎞ 1 ∂v<br />

⎤<br />

θ<br />

τθφ<br />

= τφθ<br />

= − μ⎢<br />

⎜ ⎟+<br />

⎥<br />

⎢⎣<br />

r ∂θ ⎝senθ ⎠ r senθ ∂φ<br />

⎥⎦<br />

⎡ 1 ∂v<br />

v<br />

r ∂ ⎛<br />

τφr<br />

= τrφ<br />

= − μ⎢<br />

+ r ⎜<br />

⎢⎣r senθ<br />

∂φ<br />

∂r ⎝ r<br />

φ<br />

⎞⎤<br />

⎟⎥<br />

⎠⎥⎦<br />

1 1 1 ∂vφ<br />

∇ = + +<br />

2<br />

r ∂r r senθ ∂θ r senθ ∂φ<br />

∂ 2<br />

∂<br />

( . v) ( r vr<br />

) ( vθ<br />

senθ<br />

)<br />

Fenómenos <strong>de</strong> Transporte<br />

Depto. Ingeniería Química. <strong>Universidad</strong> <strong>de</strong> <strong>Valladolid</strong>

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