Tutorial Modeling of monolith reactors
Tutorial Modeling of monolith reactors
Tutorial Modeling of monolith reactors
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Nusselt and Sherwood numbers<br />
• Equations for the local Nu for Pr=0.7 with combined<br />
entry length have been proposed. They can be<br />
expressed generically as:<br />
⎡<br />
⎛ 50<br />
Nu = C1 × ⎢ 1+ C2<br />
Gz exp ⎜ −<br />
⎣<br />
⎝ Gz<br />
⎞⎤<br />
⎟⎥<br />
⎠⎦<br />
The constants depend on channel<br />
shape and wall boundary condition<br />
The value with reaction is found by interpolation between the values for<br />
constant wall temperature and constant wall flux.:<br />
Nu<br />
2<br />
H<br />
⎛ NuH<br />
⎞<br />
Nu = Nu − Da + ⎜Nu − Da ⎟ + 4Da Nu<br />
NuT<br />
⎝ NuT<br />
⎠<br />
H H H<br />
2<br />
44